CHANGES.md

Changelog

1.38

• Bugfix: #324 Datetime indexes must be sorted in chunkstore

• Feature: #290 improve performance of tickstore column reads

1.37 (2017-1-31)

• Bugfix: #300 to_datetime deprecated in pandas, use to_pydatetime instead
• Bugfix: #309 formatting change for DateRange __str__
• Feature: #313 set and read user specified metadata in chunkstore
• Feature: #319 Audit log support in ChunkStor
• Bugfix: #216 Tickstore write fails with named index column

1.36 (2016-12-13)

• Feature: Default to hashed based sharding
• Bugfix: retry socket errors during VersionStore snapshot operations

1.35 (2016-11-29)

• Bugfix: #296 Cannot compress/decompress empty string

1.34 (2016-11-29)

• Feature: #294 Move per-chunk metadata for chunkstore to a separate collection
• Bugfix: #292 Account for metadata size during size chunking in ChunkStore
• Feature: #283 Support for all pandas frequency strings in ChunkStore DateChunker
• Feature: #286 Add has_symbol to ChunkStore and support for partial symbol matching in list_symbols

1.33 (2016-11-07)

• Feature: #275 Tuple range object support in DateChunker
• Bugfix: #273 Duplicate columns breaking serializer
• Feature: #267 Tickstore.delete returns deleted data
• Dependency: #266 Remove pytest-dbfixtures in favor of pytest-server-fixtures

1.32 (2016-10-25)

• Feature: #260 quota support on Chunkstore
• Bugfix: #259 prevent write of unnamed columns/indexes
• Bugfix: #252 pandas 0.19.0 compatibility fixes
• Bugfix: #249 open ended range reads on data without index fail
• Bugfix: #262 VersionStore.append must check data is written correctly during repack
• Bugfix: #263 Quota: Improve the error message when near soft-quota limit
• Perf: #265 VersionStore.write / append don't aggressively add indexes on each write

1.31 (2016-09-29)

• Bugfix: #247 segmentation read fix in chunkstore
• Feature: #243 add get_library_type method
• Bugfix: more cython changes to handle LZ4 errors properly
• Feature: #239 improve chunkstore's get_info method

1.30 (2016-09-26)

• Feature: #235 method to return chunk ranges on a symbol in ChunkStore
• Feature: #234 Iterator access to ChunkStore
• Bugfix: #236 Cython not handling errors from LZ4 function calls

1.29 (2016-09-20)

• Bugfix: #228 Mongo fail-over during append can leave a Version in an inconsistent state
• Feature: #193 Support for different Chunkers and Serializers by symbol in ChunkStore
• Feature: #220 Raise exception if older version of arctic attempts to read unsupported pickled data
• Feature: #219 and #220 Support for pickling large data (>2GB)
• Feature: #204 Add support for library renaming
• Feature: #209 Upsert capability in ChunkStore's update method
• Feature: #207 Support DatetimeIndexes in DateRange chunker
• Bugfix: #232 Don't raise during VersionStore #append(...) if the previous append failed

1.28 (2016-08-16)

• Bugfix: #195 Top level tickstore write with list of dicts now works with timezone aware datetimes

1.27 (2016-08-05)

• Bugfix: #187 Compatibility with latest version of pytest-dbfixtures
• Feature: #182 Improve ChunkStore read/write performance
• Feature: #162 Rename API for ChunkStore
• Feature: #186 chunk_range on update
• Bugfix: #189 range delete does not update symbol metadata

1.26 (2016-07-20)

• Bugfix: Faster TickStore querying for multiple symbols simultaneously
• Bugfix: TickStore.read now respects allow_secondary=True
• Bugfix: #147 Add get_info method to ChunkStore
• Bugfix: Periodically re-cache the library.quota to pick up any changes
• Bugfix: #166 Add index on SHA for ChunkStore
• Bugfix: #169 Dtype mismatch in chunkstore updates
• Feature: #171 allow deleting of values within a date range in ChunkStore
• Bugfix: #172 Fix date range bug when querying dates in the middle of chunks
• Bugfix: #176 Fix overwrite failures in Chunkstore
• Bugfix: #178 - Change how start/end dates are populated in the DB, also fix append so it works as expected.
• Bugfix: #43 - Remove dependency on hardcoded Linux timezone files

1.25 (2016-05-23)

• Bugfix: Ensure that Tickstore.write doesn't allow out of order messages
• Bugfix: VersionStore.write now allows writing 'None' as a value

1.24 (2016-05-10)

• Bugfix: Backwards compatibility reading/writing documents with previous versions of Arctic

1.22 (2016-05-09)

• Bugfix: #109 Ensure stable sort during Arctic read
• Feature: New benchmark suite using ASV
• Bugfix: #129 Fixed an issue where some chunks could get skipped during a multiple-symbol TickStore read
• Bugfix: #135 Fix issue with different datatype returned from pymongo in python3
• Feature: #130 New Chunkstore storage type

1.21 (2016-03-08)

• Bugfix: #106 Fix Pandas Panel storage for panels with different dimensions

1.20 (2016-02-03)

• Feature: #98 Add initial_image as optional parameter on tickstore write()
• Bugfix: #100 Write error on end field when writing with pandas dataframes

1.19 (2016-01-29)

• Feature: Add python 3.3/3.4 support
• Bugfix: #95 Fix raising NoDataFoundException across multiple low level libraries

1.18 (2016-01-05)

• Bugfix: #81 Fix broken read of multi-index DataFrame written by old version of Arctic
• Bugfix: #49 Fix strifying tickstore

1.17 (2015-12-24)

• Feature: Add timezone suppport to store multi-index dataframes
• Bugfix: Fixed broken sdist releases

1.16 (2015-12-15)

• Feature: ArticTransaction now supports non-audited 'transactions': audit=False with ArcticTransaction(Arctic('hostname')['some_library'], 'symbol', audit=False) as at: ... This is useful for batch jobs which read-modify-write and don't want to clash with concurrent writers, and which don't require keeping all versions of a symbol.

1.15 (2015-11-25)

• Feature: get_info API added to version_store.

1.14 (2015-11-25)

1.12 (2015-11-12)

• Bugfix: correct version detection for Pandas >= 0.18.
• Bugfix: retrying connection initialisation in case of an AutoReconnect failure.

1.11 (2015-10-29)

• Bugfix: Improve performance of saving multi-index Pandas DataFrames by 9x
• Bugfix: authenticate should propagate non-OperationFailure exceptions (e.g. ConnectionFailure) as this might be indicative of socket failures
• Bugfix: return 'deleted' state in VersionStore.list_versions() so that callers can pick up on the head version being the delete-sentinel.

1.10 (2015-10-28)

• Bugfix: VersionStore.read(date_range=...) could do the wrong thing with TimeZones (which aren't yet supported for date_range slicing.).

1.9 (2015-10-06)

• Bugfix: fix authentication race condition when sharing an Arctic instance between multiple threads.

1.8 (2015-09-29)

• Bugfix: compatibility with both 3.0 and pre-3.0 MongoDB for querying current authentications

1.7 (2015-09-18)

• Feature: Add support for reading a subset of a pandas DataFrame in VersionStore.read by passing in an arctic.date.DateRange
• Bugfix: Reauth against admin if not auth'd against a library a specific library's DB. Sometimes we appear to miss admin DB auths. This is to workaround that until we work out what the issue is.

1.6 (2015-09-16)

• Feature: Add support for multi-index Bitemporal DataFrame storage. This allows persisting data and changes within the DataFrame making it easier to see how old data has been revised over time.
• Bugfix: Ensure we call the error logging hook when exceptions occur

1.5 (2015-09-02)

• Always use the primary cluster node for 'has_symbol()', it's safer

1.4 (2015-08-19)

• Bugfixes for timezone handling, now ensures use of non-naive datetimes
• Bugfix for tickstore read missing images

1.3 (2015-08-011)

• Improvements to command-line control scripts for users and libraries
• Bugfix for pickling top-level Arctic object

1.2 (2015-06-29)

• Allow snapshotting a range of versions in the VersionStore, and snapshot all versions by default.

1.1 (2015-06-16)

• Bugfix for backwards-compatible unpickling of bson-encoded data
• Added switch for enabling parallel lz4 compression

1.0 (2015-06-14)

• Initial public release