badger v3.2011.0 Release Notes
Release Date: 2021-01-15 // over 3 years ago-
🚀 This release is not backward compatible with Badger v2.x.x
💥 Breaking:
- opt(compactions): Improve compaction performance (#1574)
- Change how Badger handles WAL (#1555)
- feat(index): Use flatbuffers instead of protobuf (#1546)
🛠 Fixed:
- Fix(GC): Set bits correctly for moved keys (#1619)
- Fix(tableBuilding): reduce scope of valuePointer (#1617)
- Fix(compaction): fix table size estimation on compaction (#1613)
- Fix(OOM): Reuse pb.KVs in Stream (#1609)
- Fix race condition in L0StallMs variable (#1605)
- Fix(stream): Stop produceKVs on error (#1604)
- Fix(skiplist): Remove z.Buffer from skiplist (#1600)
- Fix(readonly): fix the file opening mode (#1592)
- Fix: Disable CompactL0OnClose by default (#1586)
- Fix(compaction): Don't drop data when split overlaps with top tables (#1587)
- Fix(subcompaction): Close builder before throttle.Done (#1582)
- Fix(table): Add onDisk size (#1569)
- Fix(Stream): Only send done markers if told to do so
- Fix(value log GC): Fix a bug which caused value log files to not be GCed.
- Fix segmentation fault when cache sizes are small. (#1552)
- Fix(builder): Too many small tables when compression is enabled (#1549)
- Fix integer overflow error when building for 386 (#1541)
- Fix(writeBatch): Avoid deadlock in commit callback (#1529)
- Fix(db): Handle nil logger (#1534)
- Fix(maxVersion): Use choosekey instead of KeyToList (#1532)
- Fix(Backup/Restore): Keep all versions (#1462)
- Fix(build): Fix nocgo builds. (#1493)
- Fix(cleanup): Avoid truncating in value.Open on error (#1465)
- Fix(compaction): Don't use cache for table compaction (#1467)
- Fix(compaction): Use separate compactors for L0, L1 (#1466)
- Fix(options): Do not implicitly enable cache (#1458)
- Fix(cleanup): Do not close cache before compaction (#1464)
- Fix(replay): Update head for LSM entires also (#1456)
- fix(levels): Cleanup builder resources on building an empty table (#1414)
🐎 Performance
- perf(GC): Remove move keys (#1539)
- Keep the cheaper parts of the index within table struct. (#1608)
- Opt(stream): Use z.Buffer to stream data (#1606)
- opt(builder): Use z.Allocator for building tables (#1576)
- opt(memory): Use z.Calloc for allocating KVList (#1563)
- opt: Small memory usage optimizations (#1562)
- KeySplits checks tables and memtables when number of splits is small. (#1544)
- perf: Reduce memory usage by better struct packing (#1528)
- perf(tableIterator): Don't do next on NewIterator (#1512)
- Improvements: Manual Memory allocation via Calloc (#1459)
- Various bug fixes: Break up list and run DropAll func (#1439)
- Add a limit to the size of the batches sent over a stream. (#1412)
- Commit does not panic after Finish, instead returns an error (#1396)
- levels: Compaction incorrectly drops some delete markers (#1422)
- Remove vlog file if bootstrap, syncDir or mmap fails (#1434)
Features:
- Use opencensus for tracing (#1566)
- Export functions from Key Registry (#1561)
- Allow sizes of block and index caches to be updated. (#1551)
- Add metric for number of tables being compacted (#1554)
- feat(info): Show index and bloom filter size (#1543)
- feat(db): Add db.MaxVersion API (#1526)
- Expose DB options in Badger. (#1521)
- Feature: Add a Calloc based Buffer (#1471)
- Add command to stream contents of DB into another DB. (#1463)
- Expose NumAlloc metrics via expvar (#1470)
- Support fully disabling the bloom filter (#1319)
- Add --enc-key flag in badger info tool (#1441)
🆕 New APIs
- Badger.DB
- CacheMaxCost (#1551)
- Levels (#1574)
- LevelsToString (#1574)
- Opts (#1521)
- Badger.Options
- WithBaseLevelSize (#1574)
- WithBaseTableSize (#1574)
- WithMemTableSize (#1574)
- Badger.KeyRegistry
- DataKey (#1561)
- LatestDataKey (#1561)
✂ Removed APIs
- Badger.Options
- WithKeepL0InMemory (#1555)
- WithLevelOneSize (#1574)
- WithLoadBloomsOnOpen (#1555)
- WithLogRotatesToFlush (#1574)
- WithMaxTableSize (#1574)
- WithTableLoadingMode (#1555)
- WithTruncate (#1555)
- WithValueLogLoadingMode (#1555)