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TinkerPop3 CHANGELOG

TinkerPop 3.3.0 (Gremlin Symphony #40 in G Minor)

gremlin mozart

TinkerPop 3.3.2 (Release Date: April 2, 2018)

This release also includes changes from 3.2.8.

  • Fixed regression issue where the HTTPChannelizer doesn’t instantiate the specified AuthenticationHandler.

  • Defaulted GLV tests for gremlin-python to run for GraphSON 3.0.

  • Fixed a bug with Tree serialization in GraphSON 3.0.

  • In gremlin-python, the GraphSON 3.0 g:Set type is now deserialized to List.

Bugs

  • TINKERPOP-1053 installed plugins are placed in a directory relative to where gremlin.sh is started

  • TINKERPOP-1509 Failing test case for tree serialization

  • TINKERPOP-1738 Proper functioning of GraphSONReader depends on order of elements in String representation

  • TINKERPOP-1758 RemoteStrategy should be before all other DecorationStrategies.

  • TINKERPOP-1855 Update Rexster links

  • TINKERPOP-1858 HttpChannelizer regression: Does not create specified AuthenticationHandler

  • TINKERPOP-1859 Complex instance of P not serializing to bytecode properly

  • TINKERPOP-1860 valueMap(True) result in error in gremlin-python

  • TINKERPOP-1862 TinkerGraph VertexProgram message passing doesn’t work properly when using Direction.BOTH

  • TINKERPOP-1867 union() can produce extra traversers

  • TINKERPOP-1872 Apply edgeFunction in SparkMessenger

  • TINKERPOP-1873 min() and max() work only in the range of Integer values

  • TINKERPOP-1874 P does not appear to be serialized consistently in GraphSON

  • TINKERPOP-1875 Gremlin-Python only aggregates to list when using GraphSON3

  • TINKERPOP-1879 Gremlin Console does not resepect equal sign for flag argument assignments

  • TINKERPOP-1880 Gremlin.NET Strong name signature could not be verified. (HRESULT: 0x80131045)

  • TINKERPOP-1883 gremlinpython future will never return

  • TINKERPOP-1890 getAnonymousTraversalClass() is not being generated for Java DSLs

  • TINKERPOP-1891 Serialization of P.not() for gremlin-javascript

  • TINKERPOP-1892 GLV test failures for .NET

  • TINKERPOP-1894 GraphSONMessageSerializerV2d0 fails to deserialize valid P.not()

  • TINKERPOP-1896 gremlin-python lambdas error

  • TINKERPOP-1907 Fix failing GLV test for withSack() in .NET

  • TINKERPOP-1917 gx:BigDecimal serialization broken in Gremlin.Net on systems with ',' as decimal separator

  • TINKERPOP-1918 Scenarios fail because of wrong numerical types

  • TINKERPOP-1919 Gherkin runner doesn’t work with P.And() and P.Or() in Gremlin.Net

  • TINKERPOP-1920 Tests fail because P.Within() arguments are wrapped in an array in Gremlin.Net

  • TINKERPOP-1922 Gherkin features fail that contain P.not() in Gremlin.Net

Improvements

  • TINKERPOP-1357 Centrality Recipes should mention pageRank and OLAP.

  • TINKERPOP-1489 Provide a Javascript Gremlin Language Variant

  • TINKERPOP-1586 SubgraphStrategy in OLAP

  • TINKERPOP-1726 Support WebSockets ping/pong keep-alive in Gremlin server

  • TINKERPOP-1842 iterate() missing in terminal steps documentation

  • TINKERPOP-1844 Python GLV test should run for GraphSON 3.0 (breaking)

  • TINKERPOP-1850 Range step has undocumented special values

  • TINKERPOP-1854 Support lambdas in Gremlin.Net

  • TINKERPOP-1857 GLV test suite consistency and completeness

  • TINKERPOP-1863 Delaying the setting of requestId till the RequestMessage instantiation time

  • TINKERPOP-1865 Run Gremlin .NET GLV tests with GraphSON 3.0

  • TINKERPOP-1866 Support g:T for .NET

  • TINKERPOP-1868 Support inject source step in Gremlin.Net

  • TINKERPOP-1870 n^2 synchronious operation in OLAP WorkerExecutor.execute() method

  • TINKERPOP-1871 Exception handling is slow in element ReferenceElement creation

  • TINKERPOP-1877 Add new graph data for specialized testing scenarios

  • TINKERPOP-1884 Bump to Netty 4.0.56.Final

  • TINKERPOP-1885 Various Gremlin.Net documentation updates

  • TINKERPOP-1901 Enable usage of enums in more steps in Gremlin.Net

  • TINKERPOP-1908 Bump to Groovy 2.4.14

  • TINKERPOP-1911 Refactor JavaTranslator to cache all reflective calls

  • TINKERPOP-1914 Support construct a GremlinServer instance from gremlin executor service

TinkerPop 3.3.1 (Release Date: December 17, 2017)

This release also includes changes from 3.2.7.

  • Added NoneStep and Traversal.none() for full filtering integration with iterate().

  • Fixed bug in serialization of Path for GraphSON 3.0 in gremlin-python.

  • Added support for GraphSON 3.0 in Gremlin.Net.

  • Added math()-step which supports scientific calculator capabilities for numbers within a traversal.

  • Added missing GraphTraversalSource.addE()-method to GremlinDslProcessor.

  • Changed to() and from() traversal-based steps to take a wildcard ? instead of of E.

  • Added addV(traversal) and addE(traversal) so that created element labels can be determined dynamically.

  • PageRankVertexProgram supports maxIterations but will break out early if epsilon-based convergence occurs.

  • Added support for epsilon-based convergence in PageRankVertexProgram.

  • Fixed two major bugs in how PageRank was being calculated in PageRankVertexProgram.

  • Added Io.requiresVersion(Object) to allow graph providers a way to check the Io type and version being constructed.

  • Defaulted IoCore.gryo() and IoCore.graphson() to both use their 3.0 formats which means that Graph.io() will use those by default.

  • Bumped Neo4j 3.2.3

Bugs

  • TINKERPOP-1773 Lop should be created as a "software" and not a "person"

  • TINKERPOP-1783 PageRank gives incorrect results for graphs with sinks (breaking)

  • TINKERPOP-1799 Failure to serialize path() in gremlin-python

  • TINKERPOP-1847 tinkergraph-gremlin dependency on gremlin-test, bad scope?

Improvements

  • TINKERPOP-1632 Create a set of default functions

  • TINKERPOP-1692 Bump to Neo4j 3.2.3

  • TINKERPOP-1717 Update name and link of DynamoDB storage backend in landing page

  • TINKERPOP-1730 Gremlin .NET support for GraphSON 3.0

  • TINKERPOP-1767 Method for graph providers to check an IO version and type

  • TINKERPOP-1793 addE() should allow dynamic edge labels

  • TINKERPOP-1834 Consider iterate() as a first class step

TinkerPop 3.3.0 (Release Date: August 21, 2017)

This release also includes changes from 3.2.6.

  • Removed previously deprecated ScriptElementFactory.

  • Added GraphTraversalSource.addE(String) in support of g.addE().from().to().

  • Added support for to(Vertex) and from(Vertex) as a shorthand for to(V(a)) and from(V(b)).

  • Bumped to support Spark 2.2.0.

  • Detected if type checking was required in GremlinGroovyScriptEngine and disabled related infrastructure if not.

  • Removed previously deprecated GraphTraversal.selectV3d0() step.

  • Removed previously deprecated DetachedEdge(Object,String,Map,Pair,Pair) constructor.

  • Removed previously deprecated Bindings constructor. It is now a private constructor.

  • Removed previously deprecated TraversalSource.withBindings().

  • Removed previously deprecated GraphTraversal.sack(BiFunction,String).

  • TraversalMetrics and Metrics Gryo 1.0 formats changed given internal changes to their implementations.

  • Made TraversalMetrics safe to write to from multiple threads.

  • Removed previously deprecated TraversalSideEffects methods.

  • Removed previously deprecated finalization.LazyBarrierStrategy (moved to optimization.LazyBarrierStrategy).

  • Removed previously deprecated Constants in Hadoop.

  • Removed previously deprecated VertexComputing.generateComputer(Graph).

  • Removed previously deprecated ConfigurationTraversal.

  • Established the Gryo 3.0 format.

  • GryoVersion now includes a default ClassResolver to supply to the GryoMapper.

  • GryoClassResolver renamed to GryoClassResolverV1d0 which has an abstract class that for providers to extend in AbstractGryoClassResolver.

  • Removed previously deprecated Order enums of keyIncr, keyDecr, valueIncr, and valueDecr.

  • Removed previously deprecated GraphTraversal.mapKeys() step.

  • Removed previously deprecated GraphTraversal.mapValues() step.

  • Removed previously deprecated GraphTraversal#addV(Object…​).

  • Removed previously deprecated GraphTraversal#addE(Direction, String, String, Object…​).

  • Removed previously deprecated GraphTraversal#addOutE(String, String, Object…​).

  • Removed previously deprecated GraphTraversal#addInV(String, String, Object…​).

  • Removed previously deprecated GraphTraversal.groupV3d0() and respective GroupSideEffectStepV3d0 and GroupStepV3d0.

  • Removed previously deprecated TraversalSource.Builder class.

  • Removed previously deprecated ConnectiveP, AndP, OrP constructors.

  • Removed previously deprecated TraversalScriptFunction class.

  • Removed previously deprecated TraversalScriptHelper class.

  • Removed previously deprecated ScriptEngineCache class.

  • Removed previously deprecated CoreImports class.

  • Removed previously deprecated GremlinJythonScriptEngine#() constructor.

  • Removed access to previously deprecated CoreGremlinPlugin#INSTANCE field.

  • gremlin.sh and gremln.bat no longer support the option to pass a script as an argument for execution mode without using the -i option.

  • Graphite and Ganglia are no longer packaged with the Gremlin Server distribution.

  • TransactionException is no longer a class of AbstractTransaction and it extends RuntimeException.

  • Included an ellipse on long property names that are truncated.

  • Renamed RangeByIsCountStrategy to CountStrategy.

  • Added more specific typing to various __ traversal steps. E.g. <A,Vertex>out() is <Vertex,Vertex>out().

  • Updated Docker build scripts to include Python dependencies (NOTE: users should remove any previously generated TinkerPop Docker images).

  • Added "attachment requisite" VertexProperty.element() and Property.element() data in GraphSON serialization.

  • GraphSON 3.0 is now the default serialization format in TinkerGraph and Gremlin Server.

  • Changed ServerGremlinExecutor to not use generics since there really is no flexibility in the kind of ScheduledExecutorService that will be used.

  • Removed support for passing a byte array on the sasl parameter.

  • Removed previously deprecated GraphSONMapper$Builder#embedTypes option.

  • Removed previously deprecated :remote config timeout max.

  • Removed previously deprecated ConnectionPoolSettings.sessionId and ConnectionPoolSettings.optionalSessionId().

  • Removed previously deprecated reconnectInitialDelay setting from the Java driver.

  • Removed previously deprecated useMapperFromGraph option.

  • Established the GraphSON 3.0 format with new g:Map, g:List and g:Set types.

  • Removed previously deprecated Io.Builder#registry(IoRegistry) method.

  • Removed previously deprecated GryoMessageSerializerV1d0(GryoMapper) constructor.

  • Removed previously deprecated TinkerIoRegistry.

  • Removed previously deprecated getInstance() methods on all TinkerPop classes.

  • Removed previously deprecated VertexPropertyFeatures.supportsAddProperty().

  • Removed previously deprecated TinkerGraph configuration member variables.

  • Removed previously deprecated Transaction.submit(Function).

  • Removed previously deprecated OpSelectorHandler.errorMeter and AbstractEvalOpProcessor.errorMeter fields.

  • Removed previously deprecated AbstractEvalOpProcessor.validBindingName field.

  • Removed previously deprecated SimpleAuthenticator.CONFIG_CREDENTIALS_LOCATION field.

  • Removed previously deprecated IteratorHandler, NioGremlinResponseEncoder and WsGremlinResponseEncoder classes.

  • Removed previously deprecated Session.kill() and Session.manualKill().

  • Removed previously deprecated Authenticator.newSaslNegotiator() and its method implementations in classes that were assignable to that interface.

  • Removed gremlin-groovy-test.

  • Removed previously deprecated "G" functions in gremlin-groovy (i.e. GFunction).

  • Removed references to the old GremlinPlugin system that was in gremlin-groovy - the revised GremlinPlugin system in gremlin-core is the only one now in use.

  • GremlinGroovyScriptEngine no longer implements the now removed DependencyManager.

  • Added Vertex, Edge, VertexProperty, and Property serializers to Gremlin-Python and exposed tests that use graph object arguments.

  • Bytecode.getSourceInstructions() and Bytecode.getStepInstructions() now returns List<Instruction> instead of Iterable<Instruction>.

  • Added various TraversalStrategy registrations with GryoMapper.

  • Fixed a naming mistake in Gremlin-Python: IdentityRemoveStrategy is now called IdentityRemovalStrategy.

  • Added TranslationStrategy test infrastructure that verifies Bytecode generated from a translation is equal to the original Bytecode.

  • Moved NumberHelper into the org.apache.tinkerpop.gremlin.util package.

  • Added Pop.mixed instead of using null to represent such semantics.

  • select()-step now defaults to using Pop.last instead of Pop.mixed.

  • Added gremlin-io-test module to validate IO formats.

  • RequestMessage and ResponseMessage are now registered with GryoMapper as part of the TinkerPop range of type identifiers.

  • Removed previously deprecated Console constructor that took a String as an argument from gremlin-console.

  • Removed previously deprecated ConcurrentBindings from gremlin-groovy.

  • Removed previously deprecated ScriptExecutor from gremlin-groovy.

  • Removed previously deprecated SandboxExtension from gremlin-groovy.

  • Removed previously deprecated GremlinGroovyScriptEngine constructor that took ImportCustomizerProvider as an argument from gremlin-groovy.

  • Removed previously deprecated GremlinGroovyScriptEngine#plugins() from gremlin-groovy.

  • Added OptionalStep for use with optional() to better handle issues associated with branch side-effects.

  • UnfoldStep now supports unfolding of arrays.

  • Removed all performance tests that were not part of gremlin-benchmark.

  • Removed dependency on junit-benchmarks and it’s related reference to h2.

  • Moved the source for the "home page" into the repository under /site so that it easier to accept contributions.

  • Added UnshadedKryoShimService as the new default serializer model for SparkGraphComputer.

  • GryoRegistrator is more efficient than the previous GryoSerializer model in SparkGraphComputer.

  • Added support for IoRegistry custom serialization in Spark/Giraph and provided a general hadoop-gremlin test suite.

  • Replaced term REST with HTTP to remove any confusion as to the design of the API.

  • Moved gremlin-benchmark under gremlin-tools module.

  • Added gremlin-tools and its submodule gremlin-coverage.

  • Removed tryRandomCommit() from AbstractGremlinTest.

  • Changed gremlin-benchmark system property for the report location to benchmarkReportDir for consistency.

  • Added SysV and systemd init scripts.

  • GraphTraversal.valueMap(includeTokens,propertyKeys…​) now returns a Map<Object,E> since keys could be T.id or T.label.

  • Added skip(long) and skip((Scope,long) which call the range(low,high) equivalents with -1 as the high.

  • Added Kerberos authentication to gremlin-server for websockets and nio transport.

  • Added audit logging of authenticated users and gremlin queries to gremlin-server.

Bugs

  • TINKERPOP-1211 UnfoldStep should unfold arrays. (breaking)

  • TINKERPOP-1426 GryoSerializer should implement Java serialization interface

  • TINKERPOP-1465 Remove deprecated newSaslNegotiator (breaking)

  • TINKERPOP-1483 PropertyMapStep returns Map<String,E> but puts non String keys in it!

  • TINKERPOP-1520 Difference between 'has' step generated graphson2.0 in java and python glv implementation

  • TINKERPOP-1533 Storage and IoRegistry

  • TINKERPOP-1597 PathRetractionStrategy messing up certain traversals

  • TINKERPOP-1635 gremlin-python: Duplicate serialization of element property in PropertySerializer

  • TINKERPOP-1658 Graphson2 map keys are serialised as strings

  • TINKERPOP-1716 Traversal strategies are not applied with remote in Gremlin Console

Improvements

  • TINKERPOP-832 Remove deprecated addV/E/InE/OutE methods (breaking)

  • TINKERPOP-833 Remove deprecated GremlinGroovyScriptEngine constructor and plugins() (breaking)

  • TINKERPOP-834 Remove deprecated sack() method (breaking)

  • TINKERPOP-880 Remove deprecated GroupStepV3d0 and GroupSideEffectStepV3d0 (breaking)

  • TINKERPOP-929 Remove Deprecated TinkerGraph public static methods. (breaking)

  • TINKERPOP-980 Add a service script or daemon mode in the distribution (breaking)

  • TINKERPOP-999 ServerGremlinExecutor construction need not use generics for ExecutorService (breaking)

  • TINKERPOP-1004 Make Transaction.commit() failures consistent across implementations. (breaking)

  • TINKERPOP-1010 Remove deprecated credentialsDbLocation for SimpleAuthenticator (breaking)

  • TINKERPOP-1024 Remove deprecated tryRandomCommit() (breaking)

  • TINKERPOP-1028 Remove deprecated ConnectionPoolSettings session settings (breaking)

  • TINKERPOP-1040 Remove deprecated SandboxExtension (breaking)

  • TINKERPOP-1046 Remove deprecated Gremlin Server handler implementations (breaking)

  • TINKERPOP-1049 Remove deprecated error meter member variables in Gremlin Server handlers (breaking)

  • TINKERPOP-1094 Remove deprecated VertexPropertyFeatures.FEATURE_ADD_PROPERTY (breaking)

  • TINKERPOP-1116 Some anonymous traversal steps can be hard typed. (breaking)

  • TINKERPOP-1130 Each release should store Kryo/GraphSON/GraphML versions to ensure future compatibility (breaking)

  • TINKERPOP-1142 Remove deprecated valueIncr, valueDecr, keyIncr, keyDecr. (breaking)

  • TINKERPOP-1169 Remove deprecated TraversalScriptFunction and TraversalScriptHelper (breaking)

  • TINKERPOP-1170 Remove deprecated ConfigurationTraversal. (breaking)

  • TINKERPOP-1171 Remove deprecated TraversalSource.Builder (breaking)

  • TINKERPOP-1235 Remove deprecated ProcessPerformanceSuite and TraversalPerformanceTest (breaking)

  • TINKERPOP-1275 Remove deprecated max setting for :remote (breaking)

  • TINKERPOP-1283 Remove deprecated ScriptExecutor (breaking)

  • TINKERPOP-1289 Remove deprecated ConnectiveP, AndP, and OrP constructors. (breaking)

  • TINKERPOP-1291 Remove deprecated mapValues and mapKeys methods (breaking)

  • TINKERPOP-1313 Rename RangeByIsCountStrategy (breaking)

  • TINKERPOP-1316 Remove deprecated constructor from GryoMessageSerializers (breaking)

  • TINKERPOP-1327 Bring GryoRegistrator to the forefront and deprecate GryoSerializer (breaking)

  • TINKERPOP-1363 Cleanup Docker build script for next major release (breaking)

  • TINKERPOP-1369 Replace REST API with HTTP API

  • TINKERPOP-1389 Support Spark 2.0.0

  • TINKERPOP-1399 NumberHelper needs to go into util and have a private constructor (breaking)

  • TINKERPOP-1404 Path/label optimization

  • TINKERPOP-1408 Remove Deprecated Io.Builder.registry() (breaking)

  • TINKERPOP-1414 Change default GraphSON version to 3.0 (breaking)

  • TINKERPOP-1420 Remove deprecated ConcurrentBindings in gremlin-groovy (breaking)

  • TINKERPOP-1421 Remove deprecated ControlOps (breaking)

  • TINKERPOP-1427 GraphSON 3.0 needs collection types and consistent number typing.

  • TINKERPOP-1443 Use an API checker during build

  • TINKERPOP-1445 Large nested VertexProperties and Properties do not get printed well

  • TINKERPOP-1454 Create Serializers for Graph objects in Gremlin-Python

  • TINKERPOP-1481 Remove deprecated reconnectInitialDelay in Java driver (breaking)

  • TINKERPOP-1485 Move source for TinkerPop site to source code repo

  • TINKERPOP-1506 Optional/Coalesce should not allow sideEffect traversals.

  • TINKERPOP-1514 Restructure for gremlin-tools module (breaking)

  • TINKERPOP-1524 Bytecode.getXXXInstructions should return a List, not Iterable.

  • TINKERPOP-1526 Remove deprecated Session kill() overloads (breaking)

  • TINKERPOP-1536 Include GLVs in Docker build

  • TINKERPOP-1541 Select should default to Pop.last semantics (breaking)

  • TINKERPOP-1549 Implement skip()

  • TINKERPOP-1550 Make Graphite and Ganglia optional dependencies

  • TINKERPOP-1563 Remove deprecated getInstance() methods (breaking)

  • TINKERPOP-1565 Setup GraphSON 3.0

  • TINKERPOP-1566 Kerberos authentication for gremlin-server

  • TINKERPOP-1574 Get rid of untyped GraphSON in 3.0

  • TINKERPOP-1603 Remove support for SASL byte array in protocol (breaking)

  • TINKERPOP-1612 Remove gremlin-groovy-test module (breaking)

  • TINKERPOP-1621 Remove deprecated GremlnPlugin and related infrastructure (breaking)

  • TINKERPOP-1622 Remove deprecated G functions in gremlin-groovy (breaking)

  • TINKERPOP-1651 Remove deprecated gremlin.sh init syntax (breaking)

  • TINKERPOP-1686 Make TraversalMetrics thread safe (breaking)

  • TINKERPOP-1698 Gryo 3.0

  • TINKERPOP-1699 Remove deprecated userMapperFromGraph (breaking)

  • TINKERPOP-1700 Remove deprecated embedTypes option

  • TINKERPOP-1706 Remove deprecated ScriptEngineCache and related dead code (breaking)

  • TINKERPOP-1715 Bump to Spark 2.2

  • TINKERPOP-1719 Remove deprecated Traversal related code (breaking)

  • TINKERPOP-1720 Remove deprecated Hadoop code (breaking)

  • TINKERPOP-1721 Remove deprecated Bindings related code (breaking)

  • TINKERPOP-1724 Remove deprecated ScriptElementFactory

  • TINKERPOP-1729 Remove deprecated select steps.

  • TINKERPOP-1740 Add vertex parameter overload to to() and from()

  • TINKERPOP-1747 Streamline inheritance for gremlin-python GraphSON serializer classes

TinkerPop 3.2.0 (Nine Inch Gremlins)

nine inch gremlins

TinkerPop 3.2.8 (Release Date: April 2, 2018)

  • Added a Lambda class to Gremlin.Net that makes it possible to use Groovy and Python lambdas with Gremlin.Net.

  • Enums are now represented as classes in Gremlin.Net which allows to use them as arguments in more steps.

  • Bumped to Groovy 2.4.14.

  • Added checkAdjacentVertices option to SubgraphStrategy.

  • Modified GremlinDslProcessor so that it generated the getAnonymousTraversalClass() method to return the DSL version of __.

  • Added the "Kitchen Sink" test data set.

  • Fixed deserialization of P.not() for GraphSON.

  • Bumped to Jackson 2.9.4.

  • Improved performance of JavaTranslator by caching reflected methods required for traversal construction.

  • Ensure that RemoteStrategy is applied before all other DecorationStrategy instances.

  • Added idleConnectionTimeout and keepAliveInterval to Gremlin Server that enables a "ping" and auto-close for seemingly dead clients.

  • Fixed a bug where lambdas in gremlin-python would trigger a failure if steps using python-only symbols were present (such as as_()).

  • Fixed a bug in NumberHelper that led to wrong min/max results if numbers exceeded the Integer limits.

  • Delayed setting of the request identifier until RequestMessage construction by the builder.

  • ReferenceElement avoids UnsupportedOperationException handling in construction thus improving performance.

  • Improved error messaging for failed serialization and deserialization of request/response messages.

  • Fixed handling of Direction.BOTH in Messenger implementations to pass the message to the opposite side of the StarGraph.

  • Removed hardcoded expectation in metrics serialization test suite as different providers may have different outputs.

  • Added IndexedTraverserSet which indexes on the value of a Traverser thus improving performance when used.

  • Utilized IndexedTraverserSet in TraversalVertexProgram to avoid extra iteration when doing Vertex lookups.

  • Bumped to Netty 4.0.56.Final.

  • Fixed .NET GraphSON serialization of P.Within() and P.without() when passing a Collection as an argument.

  • Fixed a bug in Gremlin Console which prevented handling of gremlin.sh flags that had an "=" between the flag and its arguments.

  • Fixed bug where SparkMessenger was not applying the edgeFunction from MessageScope.

  • Fixed a bug in ComputerAwareStep that didn’t handle reset() properly and thus occasionally produced some extra traversers.

  • Removed TraversalPredicate class in Gremlin.Net. It is now included in the P class instead.

Bugs

  • TINKERPOP-1053 installed plugins are placed in a directory relative to where gremlin.sh is started

  • TINKERPOP-1509 Failing test case for tree serialization

  • TINKERPOP-1738 Proper functioning of GraphSONReader depends on order of elements in String representation

  • TINKERPOP-1758 RemoteStrategy should be before all other DecorationStrategies.

  • TINKERPOP-1855 Update Rexster links

  • TINKERPOP-1859 Complex instance of P not serializing to bytecode properly

  • TINKERPOP-1860 valueMap(True) result in error in gremlin-python

  • TINKERPOP-1862 TinkerGraph VertexProgram message passing doesn’t work properly when using Direction.BOTH

  • TINKERPOP-1867 union() can produce extra traversers

  • TINKERPOP-1872 Apply edgeFunction in SparkMessenger

  • TINKERPOP-1873 min() and max() work only in the range of Integer values

  • TINKERPOP-1874 P does not appear to be serialized consistently in GraphSON

  • TINKERPOP-1879 Gremlin Console does not resepect equal sign for flag argument assignments

  • TINKERPOP-1880 Gremlin.NET Strong name signature could not be verified. (HRESULT: 0x80131045)

  • TINKERPOP-1883 gremlinpython future will never return

  • TINKERPOP-1890 getAnonymousTraversalClass() is not being generated for Java DSLs

  • TINKERPOP-1891 Serialization of P.not() for gremlin-javascript

  • TINKERPOP-1892 GLV test failures for .NET

  • TINKERPOP-1894 GraphSONMessageSerializerV2d0 fails to deserialize valid P.not()

  • TINKERPOP-1896 gremlin-python lambdas error

  • TINKERPOP-1907 Fix failing GLV test for withSack() in .NET

  • TINKERPOP-1917 gx:BigDecimal serialization broken in Gremlin.Net on systems with ',' as decimal separator

  • TINKERPOP-1918 Scenarios fail because of wrong numerical types

  • TINKERPOP-1919 Gherkin runner doesn’t work with P.And() and P.Or() in Gremlin.Net

  • TINKERPOP-1920 Tests fail because P.Within() arguments are wrapped in an array in Gremlin.Net

  • TINKERPOP-1922 Gherkin features fail that contain P.not() in Gremlin.Net

Improvements

  • TINKERPOP-1357 Centrality Recipes should mention pageRank and OLAP.

  • TINKERPOP-1489 Provide a Javascript Gremlin Language Variant

  • TINKERPOP-1586 SubgraphStrategy in OLAP

  • TINKERPOP-1726 Support WebSockets ping/pong keep-alive in Gremlin server

  • TINKERPOP-1842 iterate() missing in terminal steps documentation

  • TINKERPOP-1850 Range step has undocumented special values

  • TINKERPOP-1854 Support lambdas in Gremlin.Net

  • TINKERPOP-1857 GLV test suite consistency and completeness

  • TINKERPOP-1863 Delaying the setting of requestId till the RequestMessage instantiation time

  • TINKERPOP-1868 Support inject source step in Gremlin.Net

  • TINKERPOP-1870 n^2 synchronious operation in OLAP WorkerExecutor.execute() method

  • TINKERPOP-1877 Add new graph data for specialized testing scenarios

  • TINKERPOP-1884 Bump to Netty 4.0.56.Final

  • TINKERPOP-1885 Various Gremlin.Net documentation updates

  • TINKERPOP-1901 Enable usage of enums in more steps in Gremlin.Net

  • TINKERPOP-1908 Bump to Groovy 2.4.14

  • TINKERPOP-1911 Refactor JavaTranslator to cache all reflective calls

TinkerPop 3.2.7 (Release Date: December 17, 2017)

  • Added core GraphSON classes for Gremlin-Python: UUID, Date, and Timestamp.

  • Documented the recommended method for constructing DSLs with Gremlin.Net.

  • Provided a method to configure detachment options with EventStrategy.

  • Fixed a race condition in TinkerIndex.

  • Fixed bug in handling of the long forms of -e and -i (--execute and --interactive respectively) for Gremlin Console.

  • Fixed bug in LambdaRestrictionStrategy where traversals using Lambda scripts weren’t causing the strategy to trigger.

  • Improved error messaging for bytecode deserialization errors in Gremlin Server.

  • Fixed an ArrayOutOfBoundsException in hasId() for the rare situation when the provided collection is empty.

  • Bump to Netty 4.0.53

  • TraversalVertexProgram profile() now accounts for worker iteration in GraphComputer OLAP.

  • Returned the Builder instance from the DetachedEdge.Builder methods of setOutE and setOutV.

  • Added test framework for GLVs.

  • Fixed bug in TraversalHelper.replaceStep() where the step being replaced needed to be removed prior to the new one being added.

  • Added alias support in the .NET DriverRemoteConnection.

  • Added a test for self-edges and fixed Neo4jVertex to provided repeated self-edges on BOTH.

  • Better respected permissions on the plugins.txt file and prevented writing if marked as read-only.

  • Added getters for the lambdas held by LambdaCollectingBarrierStep, LambdaFlatMapStep and LambdaSideEffectStep.

  • Fixed an old hack in GroovyTranslator and PythonTranslator where Elements were being mapped to their id only.

  • Fixed an "attachement"-bug in InjectStep with a solution generalized to StartStep.

  • Truncate the script in error logs and error return messages for "Method code too large" errors in Gremlin Server.

  • Fixed a bug in LambdaRestrictionStrategy where it was too eager to consider a step as being a lambda step.

  • ReferenceVertex was missing its label() string. ReferenceElement now supports all label handling.

  • Fixed a bug where bytecode containing lambdas would randomly select a traversal source from bindings.

  • Deprecated GremlinScriptEngine.eval() methods and replaced them with new overloads that include the specific TraversalSource to bind to.

  • Added GraphHelper.cloneElements(Graph original, Graph clone) to the gremlin-test module to quickly clone a graph.

  • Added GremlinDsl.AnonymousMethod annotation to help provide explicit types for anonymous methods when the types are not easily inferred.

  • Bump to GMavenPlus 1.6.

  • Added better error message for illegal use of repeat()-step.

  • Fixed a bug in RangeByIsCountStrategy that led to unexpected behaviors when predicates were used with floating point numbers.

  • Bump to Jackson 2.8.10.

  • Deprecated MutationListener.vertexPropertyChanged() method that did not use VertexProperty and added a new method that does.

  • Added an EmbeddedRemoteConnection so that it’s possible to mimic a remote connection within the same JVM.

  • Supported interruption for remote traversals.

  • Allow the :remote command to accept a Cluster object defined in the console itself.

  • The Console’s plugin.txt file is only updated if there were manually uninstalled plugins.

  • Fixed a bug in MatchStep where mid-traversal where() variables were not being considered in start-scope.

  • Generalized MatchStep to locally compute all clauses with barriers (not just reducing barriers).

  • Ensured that plugins were applied in the order they were configured.

  • Fixed a bug in Neo4jGremlinPlugin that prevented it from loading properly in the GremlinPythonScriptEngine.

  • Fixed a bug in ComputerVerificationStrategy where child traversals were being analyzed prior to compilation.

  • Fixed a bug that prevented Gremlin from ordering lists and streams made of mixed number types.

  • Fixed a bug where keepLabels were being corrupted because a defensive copy was not being made when they were being set by PathRetractionStrategy.

  • Cancel script evaluation timeout in GremlinExecutor when script evaluation finished.

  • Added a recipe for OLAP traversals with Spark on YARN.

  • Added spark-yarn dependencies to the manifest of spark-gremlin.

Bugs

  • TINKERPOP-1650 PathRetractionStrategy makes Match steps unsolvable

  • TINKERPOP-1731 Docker build does not appear to work for gremlin-dotnet

  • TINKERPOP-1745 Gremlin .NET: Use DateTimeOffset instead of DateTime to represent g:Date

  • TINKERPOP-1753 OrderStep not able to order by non-integer numbers

  • TINKERPOP-1760 OLAP compilation failing around ConnectiveStrategy

  • TINKERPOP-1761 GremlinExecutor: Timeout future not cancelled on successful script evaluation

  • TINKERPOP-1762 Make MatchStep analyze mid-clause variables for executing ordering purposes.

  • TINKERPOP-1764 Generalize MatchStep to localize all barriers, not just reducing barriers.

  • TINKERPOP-1766 Gremlin.Net: Closed connections should not be re-used

  • TINKERPOP-1782 RangeByIsCountStrategy doesn’t handle floating point numbers properly

  • TINKERPOP-1789 Reference elements should be represented by id and label (breaking)

  • TINKERPOP-1790 GraphSON 3.0 doc updates

  • TINKERPOP-1791 GremlinDsl custom step with generic end type produces invalid code in __.java

  • TINKERPOP-1792 Random TraversalSource Selection in GremlinScriptEngine

  • TINKERPOP-1795 Getting Lambda comparator message for .profile() step

  • TINKERPOP-1796 Driver connection pool SSL properties missing

  • TINKERPOP-1797 LambdaRestrictionStrategy and LambdaMapStep in by()-modulation.

  • TINKERPOP-1798 MutationListener.vertexPropertyChanged oldValue should be a VertexProperty

  • TINKERPOP-1801 OLAP profile() step return incorrect timing

  • TINKERPOP-1802 hasId() fails for empty collections

  • TINKERPOP-1803 inject() doesn’t re-attach with remote traversals

  • TINKERPOP-1819 documentation query and description mismatch

  • TINKERPOP-1821 Consistent behavior of self-referencing edges

  • TINKERPOP-1825 Gremlin .NET: Constant() step has incorrect parameter defined

  • TINKERPOP-1830 Race condition in Tinkergraph index creation

  • TINKERPOP-1832 TraversalHelper.replaceStep sets previousStep to the wrong step

  • TINKERPOP-1846 LambdaRestrictionStrategy not triggering for Lambda scripts

  • TINKERPOP-1848 Fix g:Date assertion in python tests

  • TINKERPOP-1851 Gremlin long options for -e and -i are not working properly

Improvements

  • TINKERPOP-1661 Docker-built documentation does not always point locally

  • TINKERPOP-1725 DotNet GLV: Make traversal generation deterministic

  • TINKERPOP-1734 DSL for Gremlin .NET

  • TINKERPOP-1746 Better error message on wrong ordering of emit()/until()/has()

  • TINKERPOP-1752 Gremlin.Net: Generate completely type-safe methods

  • TINKERPOP-1756 Provide a way to easily mock a RemoteConnection for tests

  • TINKERPOP-1759 Improve hashcode and equals for Traverser implementations

  • TINKERPOP-1768 Bump to Jackson 2.8.10

  • TINKERPOP-1770 Remote traversal timeout

  • TINKERPOP-1771 gremlin.bat doesn’t support paths containing spaces

  • TINKERPOP-1779 Bump to GMavenPlus 1.6

  • TINKERPOP-1784 Gremlin Language Test Suite

  • TINKERPOP-1785 Gremlin.Net should be strong-name signed

  • TINKERPOP-1786 Recipe and missing manifest items for Spark on Yarn

  • TINKERPOP-1787 Allow :remote command to accept a user defined Cluster instance

  • TINKERPOP-1806 Consistently use Gremlin.Net instead of Gremlin-DotNet

  • TINKERPOP-1807 Gremlin-Python doesn’t support GraphSON types g:Date, g:Timestamp and g:UUID

  • TINKERPOP-1808 Add ability to get the consumer in LambdaSideEffectStep

  • TINKERPOP-1811 Improve error reporting for serialization errors between gremlin-python and gremlin-server

  • TINKERPOP-1812 ProfileTest assumes that graph implementations will not add their own steps

  • TINKERPOP-1813 Subgraph step requires the graph API

  • TINKERPOP-1814 Some process tests require the graph API

  • TINKERPOP-1820 Include .NET GLV tests on TravisCI

  • TINKERPOP-1824 Update netty version to 4.0.52

  • TINKERPOP-1827 Gremlin .NET: Test Suite Runner

  • TINKERPOP-1829 Improve flexibility of detachment for EventStrategy

  • TINKERPOP-1833 DetachedEdge.Builder#setInV and setOutV doesn’t return the builder

  • TINKERPOP-1835 Bump Netty 4.0.53

  • TINKERPOP-1837 Gremlin .NET: Provide type coercion between IDictionary<K, V> instances

TinkerPop 3.2.6 (Release Date: August 21, 2017)

This release also includes changes from 3.1.8.

  • Bump to Netty 4.0.50

  • Registered HashMap$TreeNode to Gryo.

  • Fixed a lambda-leak in SackValueStep where BiFunction must be tested for true lambda status.

  • Fixed a bug in RangeByIsCountStrategy that broke any ConnectiveStep that included a child traversal with an optimizable pattern.

  • Allowed access to InjectStep.injections for TraversalStrategy analysis.

  • Exceptions that occur during result iteration in Gremlin Server will now return SCRIPT_EVALUATION_EXCEPTION rather than SERVER_ERROR.

  • AddEdgeStep attaches detached vertices prior to edge creation.

  • Added graph element GraphSON serializers in Gremlin-Python.

  • Initialization scripts for Gremlin Server will not timeout.

  • Added Gremlin.Net.

  • ProfileTest is now less stringent about assertions which will reduce burdens on providers.

  • GremlinExecutor begins timeout of script evaluation at the time the script was submitted and not from the time it began evaluation.

  • Added Gremlin.Net.

  • ReferenceFactory and DetachedFactory now detach elements in collections accordingly.

  • Deprecated GryoLiteMessageSerializerV1d0 in favor of HaltedTraverserStrategy.

  • Deprecated the useMapperFromGraph configuration option for Gremlin Server serializers.

  • JavaTranslator is now smart about handling BulkSet and Tree.

  • Added annotations to the traversal metrics pretty print.

  • EdgeOtherVertexStep is no longer final and can be extended by providers.

  • EdgeVertexStep is no longer final and can be extended by providers.

  • Deprecated Transaction.submit(Function).

  • Fixed HADOOP_GREMLIN_LIBS parsing for Windows.

  • Improved GraphSON serialization performance around VertexProperty.

  • Changed some tests in EventStrategyProcessTest which were enforcing some unintended semantics around transaction state.

  • Added WsAndHttpChannelizer and SaslAndHttpBasicAuthenticationHandler to be allow for servicing Http and Websocket requests to the same server

  • Added deep copy of Bytecode to DefaultTraversal.clone().

Bugs

  • TINKERPOP-1385 Refactor Profiling test cases

  • TINKERPOP-1679 Detached side-effects aren’t attached when remoted

  • TINKERPOP-1683 AbstractHadoopGraphComputer on Windows

  • TINKERPOP-1691 Some EventStrategyProcessTest assume element state is synced in memory

  • TINKERPOP-1704 XXXTranslators are not being respective of BulkSet and Tree.

  • TINKERPOP-1727 Bytecode object shallow copied when traversals are cloned

  • TINKERPOP-1742 RangeByIsCountStrategy fails for ConnectiveSteps

  • TINKERPOP-1743 LambdaRestrictionStrategy does not catch lambdas passed to sack()

  • TINKERPOP-1744 Gremlin .NET: Exception from sync execution gets wrapped in AggregateException

Improvements

  • TINKERPOP-741 Remove Options For Transaction Retry

  • TINKERPOP-915 Gremlin Server supports REST and Websockets simultanteously

  • TINKERPOP-920 Test case needed for ensuring same cardinality for key.

  • TINKERPOP-1552 C# Gremlin Language Variant

  • TINKERPOP-1669 EdgeVertexStep should be designed for extension

  • TINKERPOP-1676 Improve GraphSON 2.0 Performance (breaking)

  • TINKERPOP-1688 Include TraversalMetrics annotation in pretty print

  • TINKERPOP-1694 Deprecate useMapperFromGraph

  • TINKERPOP-1701 HaltedTraverserStrategy should recurse into collections for detachment.

  • TINKERPOP-1703 Make EdgeOtherVertexStep non-final

  • TINKERPOP-1708 Add a "Note on Scopes" document

  • TINKERPOP-1709 Add a list of all the steps that support by()/from()/to()/as()/option()

  • TINKERPOP-1710 Add a note on tree() by-modulation and uniqueness of tree branches.

  • TINKERPOP-1714 Gremlin Server scriptEvaluationTimeout should take into account request arrival time

  • TINKERPOP-1718 Deprecate GryoLiteMessageSerializerV1d0

  • TINKERPOP-1748 Callout comments break code snippets

  • TINKERPOP-1749 Bump to Netty 4.0.50

TinkerPop 3.2.5 (Release Date: June 12, 2017)

This release also includes changes from 3.1.7.

  • Fixed folding of multiple hasId() steps into GraphStep.

  • Added string performance options to StarGraph.

  • Fixed a bug in until(predicate) where it was actually calling emit(predicate).

  • Fixed inconsistency in GraphSON serialization of Path where properties of graph elements were being included when serialized.

  • Improved performance and memory usage of GraphSON when serializing TinkerGraph and graph elements.

  • Removed use of stream() in DetachedEdge and DetachedVertex.

  • Deprecated a constructor in DetachedEdge that made use of Pair in favor of a new one that just uses the objects that were in the Pair.

  • Improved error messaging on the g.addV(Object…​) when passing an invalid arguments.

  • Reduced memory usage for TinkerGraph deserialization in GraphSON by streaming vertices and edges.

  • Added the gremlin-archetype-dsl to demonstrate how to structure a Maven project for a DSL.

  • Developed and documented patterns for Domain Specific Language implementations.

  • Removed the Groovy dependency from gremlin-python and used Groovy Templates and the gmavenplus-plugin to generate the python GLV classes.

  • Now using Groovy […​] map notation in GroovyTranslator instead of new LinkedHashMap(){{ }}.

  • Maintained type information on Traversal.promise().

  • Propagated exception to Future instead of calling thread in RemoteConnection.

  • Fixed a bug in RepeatUnrollStrategy where LoopsStep and LambdaHolder should invalidate the strategy’s application.

  • Deprecated authentication.className setting in favor of using authentication.authenticator.

  • Added authentication.authenticationHandler setting.

  • Added abstraction to authorization to allow users to plug in their own AbstractAuthorizationHandler implementations.

  • Fixed a NullPointerException bug in B_LP_O_S_SE_SL_Traverser.

  • PathRetractionStrategy now uses the marker-model to reduce recursive lookups of invalidating steps.

  • ProfileStrategy now uses the marker-model to reduce recursive lookups of ProfileSideEffectStep.

  • Mutating steps now implement Scoping interface.

  • Fixed a step id compilation bug in AddVertexStartStep, AddVertexStep, AddEdgeStep, and AddPropertyStep.

  • Added more details to Gremlin Server client side messages - exception hierarchy and stack trace.

  • Deprecated "Exception-Class" in the Gremlin Server HTTP protocol in favor of the new "exceptions" field.

  • De-registered metrics on Gremlin Server shutdown.

  • Added "help" command option on :remote config for plugins that support that feature in the Gremlin Console.

  • Allowed for multiple scripts and related arguments to be passed to gremlin.sh via -i and -e.

  • LABELED_PATH requirement is now set if any step in the traversal is labeled.

  • Updated PathRetractionStrategy to not run if the provided traversal contains a VertexProgramStep that has a LABELED_PATH requirement.

  • Added various metrics to the GremlinGroovyScriptEngine around script compilation and exposed them in Gremlin Server.

  • Moved the caffeine dependency down to gremlin-groovy and out of gremlin-server.

  • Improved script compilation in GremlinGroovyScriptEngine to use better caching, log long compile times and prevent failed compilations from recompiling on future requests.

  • Synchronized script compilation.

  • Logged Script compilation times.

  • Prevented failed scripts from recompiling.

  • Logged warnings for scripts that take "too long" to compile.

  • Improved memory usage of the GremlinGroovyScriptEngine.

  • Added cyclicPath().from().to().by() support to GraphTraversal.

  • Added simplePath().from().to().by() support to GraphTraversal.

  • Added path().from().to() support to GraphTraversal so sub-paths can be isolated from the current path.

  • Added FromToModulating interface for use with to()- and from()-based step modulators.

  • Added Path.subPath() which supports isolating a sub-path from Path via to/from-labels.

  • Fixed NullPointerException in GraphMLReader that occurred when an <edge> didn’t have an ID field and the base graph supported ID assignment.

  • Added ScopingStrategy which will computer and provide all Scoping steps with the path labels of the global Traversal.

  • Split ComputerVerificationStrategy into two strategies: ComputerVerificationStrategy and ComputerFinalizationStrategy.

  • Removed HasTest.g_V_hasId_compilationEquality from process test suite as it makes too many assumptions about provider compilation.

  • Deprecated CustomizerProvider infrastructure.

  • Deprecated PluginAcceptor infrastructure.

  • Improved consistency of the application of bindings to GremlinScriptEngine implementations in the BindingsGremlinPlugin.

  • Fixed a bug in OLAP ComputerAwareStep where end-step labels were not being appended to the traverser correctly.

  • Refactor SparkContext handler to support external kill and stop operations.

  • Fixed an optimization bug in LazyBarrierStrategy around appending barriers to the end of a Traversal.

  • Fixed an optimization bug in PathRetractionStrategy around appending barriers to the end of a Traversal.

  • TraverserIterator in GremlinServer is smart to try and bulk traversers prior to network I/O.

  • Improved error handling of compilation failures for very large or highly parameterized script sent to Gremlin Server.

  • Fixed a bug in RangeByIsCountStrategy that changed the meaning of inner traversals.

  • Improved Gremlin-Python Driver implementation by adding a threaded client with basic connection pooling and support for pluggable websocket clients.

  • Changed GraphManager from a final class implementation to an interface.

  • Updated GraphManager interface to include methods for opening/instantiating a graph and closing a graph.

  • Implemented DefaultGraphManager to include previous GraphManager functionality and adhere to updated interface.

  • Deprecated GraphManager.getGraphs() and added GraphManager.getGraphNames().

  • Deprecated GraphManager.getTraversalSources() and added GraphManager.getTraversalSourceNames().

  • Fixed a bug so now users can supply a YAML with an empty staticVariableTypes to be used by the FileSandboxExtension

Bugs

  • TINKERPOP-1258 HasTest.g_V_hasId_compilationEquality makes GraphStep assumptions

  • TINKERPOP-1528 CountByIsRangeStrategy fails for a particular query

  • TINKERPOP-1626 choose() is buggy in OLAP

  • TINKERPOP-1638 count() is optimized away in where()

  • TINKERPOP-1640 ComputerVerificationStrategy gives false errors

  • TINKERPOP-1652 Disable PathRetractionStrategy strategy if VertexProgramStep has LABELLED_PATH requirement

  • TINKERPOP-1660 Documentation links should not link to TINKERPOP-xxxx branches

  • TINKERPOP-1666 NPE in FileSandboxExtension if staticVariableTypes is empty in supplied YAML file

  • TINKERPOP-1668 RepeatUnrollStrategy should not execute if there is a LoopStep used.

  • TINKERPOP-1670 End type lost when using promise()

  • TINKERPOP-1673 GroovyTranslator produces Gremlin that can’t execute on :remote

  • TINKERPOP-1675 RemoteStep#processNextStart() throws CompletionException instead of underlying exception

  • TINKERPOP-1681 Multiple hasId’s are or’d into GraphStep

Improvements

  • TINKERPOP-761 Some basic mathematical functions / steps

  • TINKERPOP-786 Patterns for DSL Development

  • TINKERPOP-1044 ResponseMessage should contain server-side exception name.

  • TINKERPOP-1095 Create a custom ScriptContext

  • TINKERPOP-1266 Make memory available to benchmarks configurable

  • TINKERPOP-1303 add help for :remote config for Gephi Plugin

  • TINKERPOP-1340 docs do not state at what version an API was introduced (or deprecated)

  • TINKERPOP-1387 from and to modulators for path steps

  • TINKERPOP-1438 Consider GraphManager as an interface*(breaking)*

  • TINKERPOP-1453 Allow Gremlin-Python to handle asynchronous failure

  • TINKERPOP-1577 Provide support for Python3 or Python2 in the Docker builds.

  • TINKERPOP-1599 implement real gremlin-python driver

  • TINKERPOP-1614 Improve documentation for Graph.V() and Graph.E() on main docs page

  • TINKERPOP-1618 Remove groovy dependency from gremlin-python

  • TINKERPOP-1627 LazyBarrierStrategy should not append an end barrier.

  • TINKERPOP-1631 Fix visibility issues with the BindingsGremlinPlugin

  • TINKERPOP-1634 Deprecate old methods of GremlinGroovyScriptEngine customization

  • TINKERPOP-1642 Improve performance of mutating traversals

  • TINKERPOP-1644 Improve script compilation process and include metrics

  • TINKERPOP-1653 Allow multiple scripts with arguments to be passed to the Console

  • TINKERPOP-1657 Provide abstraction to easily allow different HttpAuth schemes

  • TINKERPOP-1663 Validate a maximum for the number of parameters passed to Gremlin Server

  • TINKERPOP-1665 Remove unittest from Gremlin-Python tests

  • TINKERPOP-1671 Default method for RemoteConnection.submitAsync throws exception from submit on calling thread instead of failing the future

  • TINKERPOP-1677 Bump Groovy to 2.4.11

  • TINKERPOP-1680 Add string performance options to StarGraph

TinkerPop 3.2.4 (Release Date: February 8, 2017)

This release also includes changes from 3.1.6.

  • Fixed a bug where PathProcessor.keepLabels were not being pushed down into child traversals by PathRetractionStrategy.

  • Added default MessagePassingReductionStrategy for GraphComputer that can reduce the number of message passing iterations.

  • Fixed a bug associated with user-provided maps and GroupSideEffectStep.

  • GroupBiOperator no longer maintains a detached traversal and thus, no more side-effect related OLAP inconsistencies.

  • Added ProjectedTraverser which wraps a traverser with a List<Object> of projected data.

  • Fixed an optimization bug in CollectingBarrierSteps where the barrier was being consumed on each addBarrier().

  • OrderGlobalStep and SampleGlobalStep use ProjectedTraverser and now can work up to the local star graph in OLAP.

  • SASL negotiation supports both a byte array and Base64 encoded bytes as a string for authentication to Gremlin Server.

  • Deprecated all test suites in gremlin-groovy-test - Graph Providers no longer need to implement these.

  • Deprecated TinkerIoRegistry replacing it with the more consistently named TinkerIoRegistryV1d0.

  • Made error messaging more consistent during result iteration timeouts in Gremlin Server.

  • Fixed a memory leak in the classloader for the GremlinGroovyScriptEngine where classes in the loader were not releasing from memory as a strong reference was always maintained.

  • PathRetractionStrategy does not add a NoOpBarrierStep to the end of local children as its wasted computation in 99% of traversals.

  • Fixed a bug in AddVertexStartStep where if a side-effect was being used in the parametrization, an NPE occurred.

  • Fixed a bug in LazyBarrierStrategy where profile() was deactivating it accidentally.

  • Fixed a bug in RepeatUnrollStrategy where stateful DedupGlobalStep was cloned and thus, maintained two deduplication sets.

  • Added documentation around "terminal steps" in Gremlin: hasNext(), next(), toList(), etc.

  • Added specific GraphSON serializers for RequestMessage and ResponseMessage in GraphSON 2.0.

  • Added CloseableIterator to allow Graph providers who open expensive resources a way to let users release them.

  • Fixed minor bug in gremlin-driver where closing a session-based Client without initializing it could generate an error.

  • Relieved synchronization pressure in various areas of TinkerGraphComputer.

  • Fixed an optimization bug in OLAP-based DedupGlobalStep where deduping occurred twice.

  • MemoryComputeKey now implements Cloneable which is useful for BiOperator reducers that maintain thread-unsafe state.

  • TinkerGraphComputer now supports distributed Memory with lock-free partition aggregation.

  • TinkerGraph Gryo and GraphSON deserialization is now configured to use multi-properties.

  • Changed behavior of ElementHelper.areEqual(Property, Property) to not throw exceptions with null arguments.

  • Added GryoVersion for future flexibility when introducing a new verison of Gryo and moved serializer registrations to it.

  • Fixed Gryo serialization of ConnectiveP instances.

  • Lessened the severity of Gremlin Server logging when it encounters two or more serializers addressing the same mime type.

  • Bumped to Netty 4.0.42.final.

  • Added ByteBuffer, InetAddress, Timestamp to the list of Gryo supported classes.

  • Fixed Gryo serialization of Class.

  • Fixed GraphSON serialization of enums like T, P, etc. where values were overriding each other in the GraphSON type registry.

  • Fixed a bug in Gremlin-Python around .() and __.start().

  • Fixed a bug around long serialization in Gremlin-Python when using Python3.

  • Deprecated TraversalSource.withBindings() as it is no longer needed in Gremlin-Java and never was needed for other variants.

  • Fixed a bug in Gremlin-Java Bytecode where anonymous traversals were not aware of parent bindings.

  • Fixed a bug in Gremlin-Java GraphSON deserialization around P.within() and P.without().

  • Converted Spark process suite tests to "integration" tests.

  • Fixed a bug in InlineFilterStrategy having to do with folding HasContainers into VertexStep.

  • Deprecated HasContainer.makeHasContainers() which was used to dissect AndP and shouldn’t be used at the TinkerPop-level.

  • GraphTraversal.has() now will try and fold-left HasContainer if end step is a HasContainerHolder.

  • Created explicit P-predicate methods for GraphTraversal.hasXXX().

  • Fixed a bug in FilterRankStrategy around where().by() ordering.

  • Added another optimization in RangeByIsCountStrategy, that removes count().is() altogether if it’s not needed.

  • Fixed a OLAP MatchStep.clone()-bug that occurs when the match() is in a local child.

  • Added another optimization in RangeByIsCountStrategy, that removes count().is() altogether if it’s not needed.

  • Fixed a bug in RangeByIsCountStrategy where labeled parents shouldn’t have the strategy applied to their children.

  • Fixed a bug in PathRetractionStrategy where MatchEndStep labels were being dropped when they shouldn’t be.

  • Added TinkerGraphCountStrategy which translates g.V().map*.count() patterns into direct Map.size() calls in TinkerGraph.

  • Added Path.head() and Path.isEmpty() with default method implementations.

  • Fixed a NoSuchElementException bug with GroupXXXStep where if the reduced TraverserSet is empty, don’t add the key/value.

  • Fixed a NullPointerException bug with profiling GroupSideEffectStep in OLTP.

  • Improved ability to release resources in GraphProvider instances in the test suite.

  • Factored GremlinPlugin functionality out of gremlin-groovy and into gremlin-core - related classes were deprecated.

  • Added a force option for killing sessions without waiting for transaction close or timeout of a currently running job or multiple jobs.

  • Deprecated Session.kill() and Session.manualKill().

  • Added Traversal.promise() method to allow for asynchronous traversal processing on "remote" traversals.

  • Deprecated RemoteConnection.submit(Bytecode) in favor of submitAsync(Bytecode).

  • Added choose(predicate,traversal) and choose(traversal,traversal) to effect if/then-semantics (no else). Equivalent to choose(x,y,identity()).

  • Removed ImmutablePath.TailPath as it is no longer required with new recursion model.

  • Removed call stack recursion in ImmutablePath.

  • Gremlin-Python serializes Bytecode as an object (instead of a JSON string) when submit over the RemoteConnection.

  • Fixed the handling of the DriverRemoteConnection pass-through configurations to the driver.

  • IncidentToAdjacentStrategy now uses a hidden label marker model to avoid repeated recursion for invalidating steps.

  • PathProcessorStrategy can inline certain where(traversal)-steps in order to increase the likelihood of star-local children.

  • SparkGraphComputer no longer starts a worker iteration if the worker’s partition is empty.

  • Added ProjectStep.getProjectKeys() for strategies that rely on such information.

  • Added VertexFeatures.supportsDuplicateMultiProperties() for graphs that only support unique values in multi-properties.

  • Deprecated the "performance" tests in OptIn.

  • Deprecated getInstance() methods in favor of instance() for better consistency with the rest of the API.

  • Block calls to "remote" traversal side-effects until the traversal read is complete which signifies an end to iteration.

  • Added Pick.none and Pick.any to the serializers and importers.

  • Added a class loader to TraversalStrategies.GlobalCache which guarantees strategies are registered prior to GlobalCache.getStrategies().

  • Fixed a severe bug where GraphComputer strategies are not being loaded until the second use of the traversal source.

  • The root traversal now throws regular NoSuchElementException instead of FastNoSuchElementException. (breaking)

  • Added a short sleep to prevent traversal from finishing before it can be interrupted during TraversalInterruptionComputerTest.

  • Added support for SSL client authentication

Bugs

  • TINKERPOP-1380 dedup() doesn’t dedup in rare cases

  • TINKERPOP-1384 Description of filter function in traversal documentation

  • TINKERPOP-1428 profile() throws NPE for union(group, group)

  • TINKERPOP-1521 Mutating steps don’t recognize side-effects

  • TINKERPOP-1525 Plug VertexProgram iteration leak on empty Spark RDD partitions

  • TINKERPOP-1534 Gremlin Server instances leaking in tests

  • TINKERPOP-1537 Python tests should not use hard-coded number of workers

  • TINKERPOP-1547 Two bugs found associated with MatchStep: Path retraction and range count.

  • TINKERPOP-1548 Traversals can complete before interrupted in TraversalInterruptionComputerTest

  • TINKERPOP-1560 Cache in GroovyClassLoader may continue to grow

  • TINKERPOP-1561 gremiln-python GraphSONWriter doesn’t properly serialize long in Python 3.5

  • TINKERPOP-1567 GraphSON deserialization fails with within('a')

  • TINKERPOP-1573 Bindings don’t work in coalesce

  • TINKERPOP-1576 gremlin-python calls non-existent methods

  • TINKERPOP-1581 Gremlin-Python driver connection is not thread safe.

  • TINKERPOP-1583 PathRetractionStrategy retracts keys that are actually needed

  • TINKERPOP-1585 OLAP dedup over non elements

  • TINKERPOP-1587 Gremlin Server Subgraph Cardinality Not Respected

  • TINKERPOP-1594 LazyBarrierStrategy does not activate with ProfileStep

  • TINKERPOP-1605 gremlin-console 3.2.3 -e can no longer take paths relative to current working directory

Improvements

  • TINKERPOP-887 FastNoSuchElementException hides stack trace in client code

  • TINKERPOP-919 Features needs to specify whether 2 vertex properties with same key/value is allowed.

  • TINKERPOP-932 Add ability to cancel script execution associated with a Gremlin Server Session

  • TINKERPOP-1248 OrderGlobalStep should use local star graph to compute sorts, prior to reduction.

  • TINKERPOP-1261 Side-effect group().by() can’t handle user-defined maps

  • TINKERPOP-1292 TinkerGraphComputer VertexProgramInterceptors

  • TINKERPOP-1372 ImmutablePath should not use Java recursion (call stacks are wack)

  • TINKERPOP-1433 Add steps to dev docs to help committers get their keys in order

  • TINKERPOP-1434 Block calls to traversal side-effects until read is complete

  • TINKERPOP-1471 IncidentToAdjacentStrategy use hidden marker to avoid repeated recursion.

  • TINKERPOP-1473 Given PathRetractionStrategy, PathProcessorStrategy can be extended to support partial where() inlining.

  • TINKERPOP-1482 has(x).has(y) chains should be has(x.and(y))

  • TINKERPOP-1490 Provider a Future based Traversal.async(Function<Traversal,V>) terminal step

  • TINKERPOP-1502 Chained has()-steps should simply left-append HasContainers in Gremlin-Java.

  • TINKERPOP-1507 Pick.any and Pick.none are not in GraphSON or Gremlin-Python

  • TINKERPOP-1508 Add choose(predicate,trueTraversal)

  • TINKERPOP-1527 Do not override registered strategies in TraversalStrategies.GlobalCache

  • TINKERPOP-1530 Consistent use of instance()

  • TINKERPOP-1539 Create a ComplexTraversalTest with crazy nested gnarly traversals.

  • TINKERPOP-1542 Add Path.isEmpty() with a default implementation.

  • TINKERPOP-1562 Migrate ScriptEngine-related code to gremlin-core

  • TINKERPOP-1570 Bump to Netty 4.0.42

  • TINKERPOP-1582 TraversalOpProcessor does not support custom serializers

  • TINKERPOP-1584 Add gryo serializers to support types covered in GraphSON

  • TINKERPOP-1588 Added Terminal Steps section to the docs

  • TINKERPOP-1589 Re-Introduce CloseableIterator

  • TINKERPOP-1590 Create TinkerWorkerMemory and Partitioned Vertices

  • TINKERPOP-1600 Consistent use of base 64 encoded bytes for SASL negotiation

  • TINKERPOP-1602 Support SSL client certificate authentication

  • TINKERPOP-1606 Refactor GroupStep to not have the reduction traversal included in its BiOperator.

  • TINKERPOP-1610 Deprecate gremlin-groovy-test provider based tests

  • TINKERPOP-1617 Create a SingleIterationStrategy which will do its best to rewrite OLAP traversals to not message pass.

TinkerPop 3.2.3 (Release Date: October 17, 2016)

This release also includes changes from 3.1.5.

  • Restructured Gremlin-Python’s GraphSON I/O package to make it easier for users to register serializers/deserializers. (breaking)

  • Fixed a bug with TraversalOpProcessor that was returning a final result prior to committing the transaction.

  • Fixed a bug in ConnectiveStrategy where infix and/or was not correctly reasoning on choose() HasNextStep injections.

  • Increased performance of CredentialGraph authentication.

  • Removed Java 8 stream usage from TraversalHelper for performance reasons.

  • Fixed a bug in RepeatStep where emit().as('x') wasn’t adding the step labels to the emit-traverser.

  • Added GraphComputing.atMaster(boolean) to allow steps to know whether they are executing at master or distributed at workers.

  • Fixed a bug in OLAP where DedupGlobalStep wasn’t de-duping local master traversers.

  • Added HasContainerHolder.removeHasContainer()-method with default UnsupportedOperationException implementation.

  • TraversalSource.withComputer() is simplified to add a VertexProgramStrategy. Easier for language variants.

  • Fixed a Set, List, Map bug in the various Translators where such collections were not being internally translated.

  • Fixed a Bytecode bug where nested structures (map, list, set) were not being analyzed for bindings and bytecode conversions.

  • Fixed a String bug in GroovyTranslator and PythonTranslator where if the string has double-quotes it now uses """ """.

  • Added a default TraversalStrategy.getConfiguration() which returns the configuration needed to construct the strategy.

  • Computer instances can be created with Computer.create(Configuration) and accessed via Computer.getConf().

  • Every TraversalStrategy can be created via a Configuration and a static MyStrategy.create(Configuration).

  • Added language-agnostic TraversalStrategy support in Bytecode.

  • Added PartitionStrategy.Builder.readPartitions() and deprecated PartitionStrategy.Builder.addPartition().

  • A new version of LazyBarrierStrategy has been created and added to the default strategies.

  • FilterRankStrategy now propagates labels "right" over non-Scoping filters.

  • Fixed a bug in ConnectiveP where nested equivalent connectives should be inlined.

  • Fixed a bug in IncidentToAdjacentStrategy where TreeStep traversals were allowed.

  • Fixed a end-step label bug in MatchPredicateStrategy.

  • Fixed a bug in MatchPredicateStrategy where inlined traversals did not have strategies applied to it.

  • Fixed a bug in RepeatUnrollStrategy where inlined traversal did not have strategies applied to it.

  • Fixed padding of prompt in Gremlin Console when the number of lines went beyond a single digit.

  • Fixed GraphSON 2.0 namespace for TinkerGraph to be "tinker" instead of "gremlin".

  • Dropped serialization support in GraphSON 2.0 for Calendar, TimeZone, and Timestamp.

  • Added TraversalHelper.copyLabels() for copying (or moving) labels form one step to another.

  • Added TraversalHelper.applySingleLevelStrategies() which will apply a subset of strategies but not walk the child tree.

  • Added the concept that hidden labels using during traversal compilation are removed at the end during StandardVerificationStrategy. (breaking)

  • Added InlineFilterStrategy which will determine if various TraversalParent children are filters and if so, inline them.

  • Removed IdentityRemovalStrategy from the default listing as its not worth the clock cycles.

  • Removed the "!" symbol in NotStep.toString() as it is confusing and the NotStep-name is sufficient.

  • Fixed a bug in TraversalVertexProgram (OLAP) around ordering and connectives (i.e. and() and or()).

  • Added AbstractGremlinProcessTest.checkOrderedResults() to make testing ordered results easier.

  • AbstractLambdaTraversal now supports a bypassTraversal where it is possible for strategies to redefine such lambda traversals.

  • Added an internal utility ClassFilterStep which determines if the traverser object’s class is an instance of the provided class.

  • ConnectiveStep extends FilterStep and thus, is more appropriately categorized in the step hierarchy.

  • PropertyMapStep supports a provided traversal for accessing the properties of the element. (breaking)

  • SubgraphStrategy now supports vertex property filtering.

  • Fixed a bug in Gremlin-Python P where predicates reversed the order of the predicates.

  • Added tests to DedupTest for the dedup(Scope, String…​) overload.

  • Added more detailed reference documentation for IO formats.

  • Fixed a bug in serialization of Lambda instances in GraphSON, which prevented their use in remote traversals.

  • Fixed a naming bug in Gremlin-Python where P.and and P._or should be P.and and P.or_. (breaking)

  • where() predicate-based steps now support by()-modulation.

  • Added Gryo serialization for Bytecode.

  • Moved utility-based serializers to UtilSerializers for Gryo - these classes were private and hence this change is non-breaking.

  • TraversalRing returns a null if it does not contain traversals (previously IdentityTraversal).

  • Deprecated Graph.Exceptions.elementNotFoundException() as it was not used in the code base outside of the test suite.

  • Fixed a JavaTranslator bug where Bytecode instructions were being mutated during translation.

  • Added Path to Gremlin-Python with respective GraphSON 2.0 deserializer.

  • Traversal and TraversalSource now implement AutoCloseable.

  • Added "keep-alive" functionality to the Java driver, which will send a heartbeat to the server when normal request activity on a connection stops for a period of time.

  • Renamed the empty.result.indicator preference to result.indicator.null in Gremlin Console

  • If result.indicator.null is set to an empty string, then no "result line" is printed in Gremlin Console.

  • Deprecated reconnectInitialDelay on the Java driver.

  • Added some validations to Cluster instance building.

  • Produced better errors in readGraph of GryoReader and GraphSONReader if a Vertex cannot be found in the cache on edge loading.

  • VertexPrograms can now declare traverser requirements, e.g. to have access to the path when used with .program().

  • New build options for gremlin-python where -DglvPython is no longer required.

  • Added missing InetAddress to GraphSON extension module.

  • Added new recipe for "Pagination".

  • Added new recipe for "Recommendation".

  • Added functionality to Gremlin-Server REST endpoint to forward Exception Messages and Class in HTTP Response

  • Gremlin Server TraversalOpProcessor now returns confirmation upon Op close.

  • Added close method Java driver and Python driver DriverRemoteTraversalSideEffects.

Bugs

  • TINKERPOP-1423 IncidentToAdjacentStrategy should be disabled for tree steps

  • TINKERPOP-1440 g:Path needs a GraphSON deserializer in Gremlin-Python

  • TINKERPOP-1457 Groovy Lambdas for remote traversals not serializable

  • TINKERPOP-1458 Gremlin Server doesn’t return confirmation upon Traversal OpProcessor "close" op

  • TINKERPOP-1466 PeerPressureTest has been failing recently

  • TINKERPOP-1472 RepeatUnrollStrategy does not semi-compile inlined repeat traversal

  • TINKERPOP-1476 TinkerGraph does not get typed with the right type name in GraphSON

  • TINKERPOP-1495 Global list deduplication doesn’t work in OLAP

  • TINKERPOP-1500 and/or infix and choose() do not work correctly.

  • TINKERPOP-1511 Remote client addV, V()

Improvements

  • TINKERPOP-790 Implement AutoCloseable on TraversalSource

  • TINKERPOP-944 Deprecate Graph.Exceptions.elementNotFound

  • TINKERPOP-1189 SimpleAuthenticator over HttpChannelizer makes Gremlin Server pretty slow and consumes more CPU

  • TINKERPOP-1249 Gremlin driver to periodically issue ping / heartbeat to gremlin server

  • TINKERPOP-1280 VertexPrograms should declare traverser requirements

  • TINKERPOP-1330 by()-modulation for where()

  • TINKERPOP-1409 Make the "null" return in the gremlin console into something more understandable (breaking)

  • TINKERPOP-1431 Documentation generation requires tests to execute on gremlin-python

  • TINKERPOP-1437 Add tests for dedup(Scope) in DedupTest

  • TINKERPOP-1444 Benchmark bytecode→Traversal creation and implement GremlinServer cache if necessary.

  • TINKERPOP-1448 gremlin-python should be Python 2/3 compatible

  • TINKERPOP-1449 Streamline gremlin-python build

  • TINKERPOP-1455 Provide String-based withStrategy()/withoutStrategy() for language variant usage

  • TINKERPOP-1456 Support SubgraphStrategy.vertexProperties().

  • TINKERPOP-1460 Deprecate reconnectInitialDelay in Java driver

  • TINKERPOP-1464 Gryo Serialization for Bytecode

  • TINKERPOP-1469 Get rid of Stream-usage in TraversalHelper

  • TINKERPOP-1470 InlineFilterStrategy should try and P.or() has() children in OrSteps.

  • TINKERPOP-1486 Improve API of RemoteConnection

  • TINKERPOP-1487 Reference Documentation for IO

  • TINKERPOP-1488 Make LazyBarrierStrategy part of the default TraversalStrategies (breaking)

  • TINKERPOP-1492 RemoteStrategy or the RemoteConnection should append a lazy barrier().

  • TINKERPOP-1423 IncidentToAdjacentStrategy should be disabled for tree steps

  • TINKERPOP-1440 g:Path needs a GraphSON deserializer in Gremlin-Python

  • TINKERPOP-1457 Groovy Lambdas for remote traversals not serializable

  • TINKERPOP-1458 Gremlin Server doesn’t return confirmation upon Traversal OpProcessor "close" op

  • TINKERPOP-1466 PeerPressureTest has been failing recently

  • TINKERPOP-1472 RepeatUnrollStrategy does not semi-compile inlined repeat traversal

  • TINKERPOP-1495 Global list deduplication doesn’t work in OLAP

  • TINKERPOP-1500 and/or infix and choose() do not work correctly.

  • TINKERPOP-1511 Remote client addV, V()

TinkerPop 3.2.2 (Release Date: September 6, 2016)

This release also includes changes from 3.1.4.

  • Included GraphSON as a default serializer (in addition to Gryo, which was already present) in Gremlin Server if none are defined.

  • Added gremlin-python package as a Gremlin language variant in Python.

  • Added Bytecode which specifies the instructions and arguments used to construct a traversal.

  • Created an experimental GraphSON representation of Bytecode that will be considered unstable until 3.3.0.

  • Added Translator which allows from the translation of Bytecode into some other form (e.g. script, Traversal, etc.).

  • Added JavaTranslator, GroovyTranslator, PythonTranslator, and JythonTranslator for translating Bytecode accordingly.

  • Added TranslationStrategy to gremlin-test so translators can be tested against the process test suite.

  • Added Traversal.Admin.nextTraverser() to get the next result in bulk-form (w/ default implementation).

  • Added TraversalSource.getAnonymousTraversalClass() (w/ default implementation).

  • Added GremlinScriptEngine interface which specifies a eval(Bytecode, Bindings) method.

  • Deprecated RemoteGraph in favor of TraversalSource.withRemote() as it is more technically correct to tie a remote traversal to the TraversalSource than a Graph instance.

  • GremlinGroovyScriptEngine implements GremlinScriptEngine.

  • Added GremlinJythonScriptEngine which implements GremlinScriptEngine.

  • Removed support for submitting a Java serialized Traversal to Gremlin Server.

  • Removed a largely internal feature that supported automatic unrolling of traversers in the Gremlin Driver.

  • Made it possible to directly initialize OpProcessor implementations with server Settings.

  • Included GraphSON as a default serializer (in addition to Gryo, which was already present) in Gremlin Server if none are defined

  • Introduced GraphSON 2.0.

  • Deprecated embedTypes on the builder for GraphSONMapper.

  • Bumped to Netty 4.0.40.final.

  • Defaulted the gremlinPool setting in Gremlin Server to be zero, which will instructs it to use Runtime.availableProcessors() for that settings.

  • Changed scope of log4j dependencies so that they would only be used in tests and the binary distributions of Gremlin Console and Server.

  • Deprecated Io.Builder.registry() in favor of the newly introduced Io.Builder.onMapper().

  • Added new recipe for "Traversal Induced Values".

  • Fixed a potential leak of a ReferenceCounted resource in Gremlin Server.

  • Added class registrations for Map.Entry implementations to GryoMapper.

  • Added methods to retrieve Cluster settings in gremlin-driver.

  • Fixed a severe bug in SubgraphStrategy.

  • Deprecated SubgraphStrategy.Builder.vertexCriterion()/edgeCriterion() in favor of vertices()/edges().

  • Fixed a small bug in StandardVerificationStrategy that caused verification to fail when withPath was used in conjunction with ProfileStep.

  • Added color preferences

  • Added input, result prompt preferences

  • Added multi-line indicator in Gremlin Console

Bugs

  • TINKERPOP-810 store not visible

  • TINKERPOP-1151 slf4j-log4j12 / log4j is only required for testing (breaking)

  • TINKERPOP-1383 publish-docs.sh might publish to current too early

  • TINKERPOP-1390 IdentityRemoveStrategyTest fails randomly

  • TINKERPOP-1400 SubgraphStrategy introduces infinite recursion if filter has Vertex/Edge steps.

  • TINKERPOP-1405 profile() doesn’t like withPath()

Improvements

  • TINKERPOP-1037 Gremlin shell output coloring

  • TINKERPOP-1226 Gremlin Console should :clear automagically after "Display stack trace."

  • TINKERPOP-1230 Serialising lambdas for RemoteGraph

  • TINKERPOP-1274 GraphSON Version 2.0

  • TINKERPOP-1278 Implement Gremlin-Python and general purpose language variant test infrastructure

  • TINKERPOP-1285 Gremline console does not differentiate between multi-line and single-line input

  • TINKERPOP-1334 Provide a way to pull gremlin.driver.Cluster connection settings.

  • TINKERPOP-1347 RemoteConnection needs to provide TraversalSideEffects. (breaking)

  • TINKERPOP-1373 Default gremlinPool to number of cores

  • TINKERPOP-1386 Bump to Netty 4.0.40.Final

  • TINKERPOP-1392 Remove support for java serialized Traversal (breaking)

  • TINKERPOP-1394 Fix links in Recipes doc

  • TINKERPOP-1396 Traversal Induced Values Recipe

  • TINKERPOP-1402 Impossible for graph implementations to provide a class resolver for Gryo IO

  • TINKERPOP-1407 Default serializers for Gremlin Server

  • TINKERPOP-1425 Use trailing underscores in gremlin-python

TinkerPop 3.2.1 (Release Date: July 18, 2016)

This release also includes changes from 3.1.3.

  • PathProcessor steps now have the ability (if configured through a strategy) to drop Traverser path segments.

  • MatchStep in OLTP has a lazy barrier to increase the probability of bulking.

  • Added PathRetractionStrategy which will remove labeled path segments that will no longer be referenced.

  • Added Path.retract() to support retracting paths based on labels.

  • Optimized ImmutablePath and MutablePath equality code removing significant unnecessary object creation code.

  • Bumped to Groovy 2.4.7.

  • Added RepeatUnrollStrategy to linearize a repeat()-traversal if loop amount is known at compile time.

  • Fixed a bug in BranchStep around child integration during clone().

  • Fixed a bug in AbstractStep around label set cloning.

  • Added TraversalStrategyPerformanceTest for verifying the performance gains of optimization-based traversal strategies.

  • TraversalExplanation.prettyPrint() exists which provides word wrapping and GremlinConsole is smart to use console width to control toString().

  • TraversalOpProcessor (RemoteConnection) uses HaltedTraverserStrategy metadata to determine detachment procedure prior to returning results.

  • Allow DFS paths in HADOOP_GREMLIN_LIBS.

  • Added a safer serializer infrastructure for use with SparkGraphComputer that uses KryoSerializer and the new GryoRegistrator.

  • Added HaltedTraverserStrategy to allow users to get back different element detachments in OLAP.

  • Fixed a NullPointerException bug around nested group()-steps in OLAP.

  • Fixed a severe bug around halted traversers in a multi-job OLAP traversal chain.

  • Ensure a separation of GraphComputer and VertexProgram configurations in SparkGraphComputer and GiraphGraphComputer.

  • PeerPressureVertexProgram now supports dynamic initial vote strength calculations.

  • Added EmptyMemory for ease of use when no memory exists.

  • Updated VertexComputing.generateProgram() API to include Memory. (breaking)

  • ImmutablePath.TailPath is now serializable like ImmutablePath.

  • Added ConfigurationCompilerProvider which allows fine-grained control of some of the internal GremlinGroovyScriptEngine settings at the Groovy compilation level.

  • Intoduced the application/vnd.gremlin-v1.0+gryo-lite serialization type to Gremlin Server which users "reference" elements rather than "detached".

  • GryoMapper allows overrides of existing serializers on calls to addCustom on the builder.

  • Added a traversal style guide to the recipes cookbook.

  • Fixed a bug in master-traversal traverser propagation.

  • Added useful methods for custom VertexPrograms to be used with program()-step.

  • Increased the test coverage around traverser propagation within a multi-job OLAP traversal.

  • Added tests to validate the status of a transaction immediately following calls to close.

  • Added tests to ensure that threaded transactions cannot be re-used.

  • GraphFilter helper methods are now more intelligent when determining edge direction/label legality.

  • Added GraphFilterStrategy to automatically construct GraphFilters via traversal introspection in OLAP.

  • Updated the Gephi Plugin to support Gephi 0.9.x.

  • Increased the testing and scope of TraversalHelper.isLocalStarGraph().

  • Changed signature of get_g_VXlistXv1_v2_v3XX_name and get_g_VXlistX1_2_3XX_name of VertexTest to take arguments for the Traversal to be constructed by extending classes.

  • Added VertexProgramInterceptor interface as a general pattern for GraphComputer providers to use for bypassing GraphComputer semantics where appropriate.

  • Added SparkStarBarrierInterceptor that uses Spark DSL for local star graph traversals that end with a ReducingBarrierStep.

  • Added SparkInterceptorStrategy which identifies which interceptor to use (if any) given the submitted VertexProgram.

  • Added SparkSingleIterationStrategy that does not partition nor cache the graph RDD if the traversal does not message pass.

  • Added more helper methods to TraversalHelper for handling scoped traversal children.

  • Deprecated all "performance" tests based on "JUnit Benchmarks".

  • SparkGraphComputer no longer shuffles empty views or empty outgoing messages in order to save time and space.

  • TraversalVertexProgram no longer maintains empty halted traverser properties in order to save space.

  • Added List<P<V>> constructors to ConnectiveP, AndP, and OrP for ease of use.

  • Added support for interactive (-i) and execute (-e) modes for Gremlin Console.

  • Displayed line numbers for script execution failures of -e and -i.

  • Improved messaging around script execution errors in Gremlin Console.

  • Added "help" support to Gremlin Console with the -h flag.

  • Added options to better control verbosity of Gremlin Console output with -Q, -V and -D.

  • Deprecated the ScriptExecutor - the -e option to gremlin.sh is now handled by Console.

  • Traversal now allows cancellation with Thread.interrupt().

  • Added a Gremlin language variant tutorial teaching people how to embed Gremlin in a host programming language.

Bugs

  • TINKERPOP-1281 Memory.HALTED_TRAVERSER transience is not sound.

  • TINKERPOP-1305 HALTED_TRAVER