Dgraph v0.8.0 Release

This release would not work on v0.7 data directly. Needs backup and reimport.

Features

Server

• Suppport has function.
• Support for variables in mutation blocks.
• Support for k shortest paths.
• Support deletion of predicate.
• Support for uid_in function.
• ignoreReflex directive to remove reflexive edges from results.
• Allow to use Dgraph as a library.
• Ability to monitor server metrics.

Client

• Go client now supports an Unmarshal function which allows unmarshalling the protocol buffer response to a custom struct.
• Add support for storing and retrieving raw bytes.
• Cleaner and more intuitive API for doing mutations.

Improvements

• Move away from RocksDB and get rid of CGO. Start using Badger.
• Assign uids sequentially.
• Allow retrieving other children with @groupby.
• Allow aliases for math expressions.
• Support filtering using multiple tokens with eq.
• Better language lists semantics. Issue #1010
• Add a uid function which can be used for filtering uids at any level.
• Allow adding @count indexes which allow for faster count comparison queries at the root.
• Optimisations in how we store Posting List data structure. Store uids separately.
• Allow specifying a max depth argument for the shortest path.
• Support for month, day, hour indexes for dateTime datatype.
• Get rid of lhmap and add an LRU Cache. We don't do Stop the World anymore.

Changes (from v0.7.7)

• date type is no longer supported as a schema type in Dgraph. You should use dateTime instead.
• Change of syntax for querying by id.

# Before
{
  me(id: [0x1, 0x2]) {
    ...
  }
}

# Now
{
  me(func: uid(0x1, 0x2)) {
    ...
  }
}

• Dgraph doesn't fingerprint xids anymore. They are now treated similarly to other edges. So now if you had an xid and you wanted to query by it you would use.

# You need to have an index on xid for calling `eq` function.
{
  me(func: eq(xid, "alice")) {
    ....
  } 
}

• /admin/backup is now /admin/export. It outputs blank nodes which can now be used to load data into a fresh instance.
• There is a separate port for http (default 8080) and grpc (default 9080) now.

Bugfixes

• Remove concurrent filtering data race. Issue #1020
• Fix panic issues related to tracing. Wait for all goroutines to finish before retuning error.
• Fix crash caused by nil list. #1035
• #793
• #939
• #960
• #993
• #1007
• #1025
• #1118
• #1157
• #1163

Dgraph v0.7.7 Release

Features

• Support for Group by
• Hash tokenizer for strings.
• Support for count at root.
• Suppport for reloading TLS certs.

Improvements

• Allow setting id as a GraphQL variable.
• Support for variables in inequality functions.
• Support for count and alias for _predicate_.
• Support alias for _uid_.
• A new and improved Dgraph browser.

Bugfixes

• Issue #921
• Issue #913
• Issue #915
• Issue #895
• Issue #960
• Issue #945

Dgraph v0.7.6 Release

Features

• Support for aggregating over levels and mathematical operations on value variables.
• Support for S P * and S * * deletion.
• Support for expand_all.

Improvements

• Regex searches are now faster with support for trigram indexing.
• Parallelize full scan by using multiple iterators.
• Change function name. geq => gq, leq => le
• Additional filtering to ensure returned values match language specified in function invocation.
• Support alias for var and aggregation functions.
• Support for adding facets using Go client.

Bugfixes

• Fix cascade with ordering.
• Fixes to full text search used with multiple languages.
• Fixes in RDF parsing (throw error if type not identified).
• Allow only one sortable index per predicate.
• Return error if attribute is not indexed and used in functions.
• Normalize directive returns all unique paths in a subgraph.
• Fix missing port in address issue #837.
• Fix issue with applyOrderAndPagination #889.
• Couldn't parse facet value, issue #826.
• Bugs related to string quoting, issue #862.
• Retrieve facets for predicate with language, issue #878.

Dgraph v0.7.5 Release

This release mainly focuses on small bug-fixes.

Features

• Support for GraphQL variables in functions.
• View JSON response in UI.

Bugfixes

• Track context information for variables #821
• Eq function returns an error when no schema is set #810
• Dgraph crashes while running shortest path query. #808
• @filter(NOT var(VARIABLE)) not working as expected #802
• Fixes for issues related to full text search.
• Support language tag in ordering at root.

Dgraph v0.7.4 Release

Features

• Full-Text Search:
  • Introduction of new functions: alloftext and anyoftext.
  • New index type: fulltext.
  • Language-specific stemmers and stop-words lists.
  • Support for 15 languages.
• Mutate and get schema through /query endpoint using schema block.
• TLS support for interaction between Dgraph server and client.
• Support for aggregation, sorting and retrieving value variables.
• Support for multiple tokenizers per predicate.
• Recursive queries to traverse the graph till leafs.
• Filter by count at the root.
• Support for avg aggregation function.
• Support for regexp matching on strings.
• Filtering based on facets.
• User Interface:
  • Support for showing results in a tree format, render facets, aggregation and shortest path results.
  • Ability to filter/delete previous queries.
  • Scratchpad to store temporary UID => name mapping.
  • Regex to specify the predicate to show as part of Graph.

Improvements

• Move to Go 1.8.
• Improve shortest path result to return path information.
• Switch Int type to int64 from int32.
• Improve performance of sorting (orderasc and orderdesc).
• Stricter handling of commas and quotes while parsing the query.
• Removal of the schema file. Schema stored within Dgraph.

Bugfixes

• Aggregation functions returned global aggregates rather than per entity.
• Pagination crashes on some invalid offsets.
• Filtering on reverse UIDs returns an empty result.
• Better errors on non-indexed attributes.
• Mutation with UID 0 crashes the server
• Sorting on strings returned incorrect results.

Dgraph v0.7.3 release

Features:

• Support shortest path query
• Support storing and retrieving edge attributes
• Support aggregation functions (min, max, sum)
• Support password data type
• Support Dynamic schema.
• Support filter by count
• Support sorting and pagination at root.
• Support user interface to query and visualize results from Dgraph.
• Support normalize directive in query
• Support specifying tokenizer in schema file
• Graceful shutdown of Dgraph.

Improvements:

• Stricter check for invalid keywords while querying.
• Use block lists instead of a slice for task.List.
• Get debug info using a query parameter.

Bug fixes:

• Remove duplicate results when using order on an indexed predicate.
• Fix watermark is nil.

Dgraph v0.7.2-1 release

Contains fix for #550 on top of the changes for v0.7.2.

Dgraph v0.7.2 release

Features

• Support for multiple blocks in the same query which can be executed in parallel.
• Support for variables in queries.
• Support for multiple ids at the root of the query.
• Support for not operator in filter directive.
• Support for rebuilding indexes.

Improvements

• Stricter RDF parser which conforms with the spec.
• Lexing queries is faster as we move away from channel to slices.
• Easier to specify geo-spatial entities in queries.
• Marshalling query response to JSON is faster.
• Support comments in queries and mutations.

Bugfixes

• Fixes with sync watermark
• Fixes with orderdesc
• Fix bug with using ICU (setting ICU_DATA broke Java)

Dgraph v0.7.1 release

Features

• Support @reverse for automatically adding reverse edges.
• Support for taking snapshots using RAFT.
• Support for sorting results in descending order.
• Support less than equal (leq) and greater than equal (geq) functions in filtering.
• Support for Geo functions (near, contains, within, intersects).

Improvements

• Switch dgraphloader to use the Go client.
• Move Go client to within the Dgraph repo with support for BatchWrite's.
• Support for reading flags from YAML config file.
• Allow empty strings in mutations.
• Introduce uid type for objects in schema.
• Remove query expansion based on schema.

Bug Fixes:

• Don’t return empty objects at root.
• Getting count with both order and filter applied.
• Minor bugfixes in GQL parser.
• Fix bugs in field alias.
• Return errors on using unindexed fields in query functions.

Dgraph v0.7.0 release

Features:

• Fault tolerance using RAFT.
• Ability to take backups using HTTP.
• Consensus based mutations.
• Auto assign uids as part of mutations.
• Filters - Term matching
• Schema system.
• Storage types.
• Indexing for all data types.
• Tokenize English and CJK strings using ICU.
• Support for clean exit of Dgraph server using HTTP.
• Support GraphQL field alias.
• Support functions at root.

Improvements:

• Speed up_count_ queries.
• Support count with filtering and pagination.
• Make mutations concurrent in RAFT.
• Dgraphloader now runs mutations over HTTP.
• Serve HTTP and gRPC requests through same port using cmux.
• Replace gotomic map with an efficient sharded go-map.
• Batch write commits to RocksDB.
• Move away from gorocksdb and have own cgo wrapper.
• Track server statistics in /debug endpoint.
• Simplify the logic for posting lists.
• Switch from Flatbuffers to Protocol buffers.
• Use same traversal to generate JSON and Protocol buffer results.
• Update to RocksDB 4.11.2.