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CHANGELOG.md

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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

Unreleased

Remove SetWithDiscard and NextSequence related implementations. These features are not used any more.

[1.5.0] - 2018-05-08

  • Introduce NumVersionsToKeep option. This option is used to discard many versions of the same key, which saves space.
  • Add a new SetWithDiscard method, which would indicate that all the older versions of the key are now invalid. Those versions would be discarded during compactions.
  • Value log GC moves are now bound to another keyspace to ensure latest versions of data are always at the top in LSM tree.
  • Introduce ValueLogMaxEntries to restrict the number of key-value pairs per value log file. This helps bound the time it takes to garbage collect one file.

[1.4.0] - 2018-05-04

  • Make mmap-ing of value log optional.
  • Run GC multiple times, based on recorded discard statistics.
  • Add MergeOperator.
  • Force compact L0 on clsoe (#439).
  • Add truncate option to warn about data loss (#452).
  • Discard key versions during compaction (#464).
  • Introduce new LSMOnlyOptions, to make Badger act like a typical LSM based DB.

Bug fix:

  • [Temporary] Check max version across all tables in Get (removed in next release).
  • Update commit and read ts while loading from backup.
  • Ensure all transaction entries are part of the same value log file.
  • On commit, run unlock callbacks before doing writes (#413).
  • Wait for goroutines to finish before closing iterators (#421).

1.3.0 - 2017-12-12

  • Add DB.NextSequence() method to generate monotonically increasing integer sequences.
  • Add DB.Size() method to return the size of LSM and value log files.
  • Tweaked mmap code to make Windows 32-bit builds work.
  • Tweaked build tags on some files to make iOS builds work.
  • Fix DB.PurgeOlderVersions() to not violate some constraints.

1.2.0 - 2017-11-30

  • Expose a Txn.SetEntry() method to allow setting the key-value pair and all the metadata at the same time.

1.1.1 - 2017-11-28

  • Fix bug where txn.Get was returing key deleted in same transaction.
  • Fix race condition while decrementing reference in oracle.
  • Update doneCommit in the callback for CommitAsync.
  • Iterator see writes of current txn.

1.1.0 - 2017-11-13

  • Create Badger directory if it does not exist when badger.Open is called.
  • Added Item.ValueCopy() to avoid deadlocks in long-running iterations
  • Fixed 64-bit alignment issues to make Badger run on Arm v7

1.0.1 - 2017-11-06

  • Fix an uint16 overflow when resizing key slice