openbilibili/vendor/github.com/dgraph-io/badger/CHANGELOG.md

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

1.5.3 - 2018-07-11

Bug Fixes:

• Fix a panic caused due to item.vptr not copying over vs.Value, when looking for a move key.

1.5.2 - 2018-06-19

Bug Fixes:

• Fix the way move key gets generated.

• If a transaction has unclosed, or multiple iterators running simultaneously, throw a panic. Every iterator must be properly closed. At any point in time, only one iterator per transaction can be running. This is to avoid bugs in a transaction data structure which is thread unsafe.

• Warning: This change might cause panics in user code. Fix is to properly close your iterators, and only have one running at a time per transaction.

1.5.1 - 2018-06-04

Bug Fixes:

• Fix for infinite yieldItemValue recursion. #503
• Fix recursive addition of badgerMove prefix. https://github.com/dgraph-io/badger/commit/2e3a32f0ccac3066fb4206b28deb39c210c5266f
• Use file size based window size for sampling, instead of fixing it to 10MB. #501

Cleanup:

• Clarify comments and documentation.
• Move badger tool one directory level up.

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