rust-rocksdb/CHANGELOG.md

# Changelog

## Unreleased

### Added

* `DB::get_updates_since()` to iterate write batches in a given sequence (nlfiedler).
* `ReadOptions::set_tailing()` to create a tailing iterator that continues to iterate over the database as new records are added.

## 0.12.3 (2019-07-19)

### Changes

* Enabled sse4.2/pclmul for accelerated crc32c (yjh0502)
* Added `set_db_write_buffer_size` to the Options API (rnarubin)
* Bumped RocksDB to 6.1.2 (lispy)
* Added `Sync` and `Send` implementations to `Snapshot` (pavel-mukhanov)
* Added `raw_iterator_cf_opt` to the DB API (rnarubin)
* Added `DB::latest_sequence_number` method (vitvakatu)
* Changed column families storing (aleksuss)

## 0.12.2 (2019-05-03)

### Changes

* Updated `compact_range_cf` to use generic arguments (romanz)
* Removed allocations from `SliceTransform` implementation (ekmartin)
* Bumped RocksDB to 5.18.3 (baptistejamin)
* Implemented `delete_range` and `delete_range_cf` (baptistejamin)
* Added contribution guide (rhurkes)
* Cleaned up documentation for `ReadOptions.set_iterate_upper_bound` method (xiaobogaga)
* Added `flush` and `flush_opt` operations (valeriansaliou)

## 0.12.1 (2019-03-27)

### Changes

* Added `iterator_cf_opt` function to `DB` (elichai)
* Added `set_allow_mmap_writes` and `set_allow_mmap_reads` functions to `Options` (aleksuss)


## 0.12.0 (2019-03-10)

### Changes

* Added support for PlainTable factories (ekmartin)
* Added ability to restore latest backup (rohitjoshi)
* Added support for pinnable slices (xxuejie)
* Added ability to get property values (ekmartin)
* Simplified opening database when using non-default column families (iSynaptic)
* `ColumnFamily`, `DBIterator` and `DBRawIterator` now have lifetime parameters to prevent using them after the `DB` has been dropped (iSynaptic)
* Creating `DBIterator` and `DBRawIterator` now accept `ReadOptions` (iSynaptic)
* All database operations that accepted byte slices, `&[u8]`, are now generic and accept anything that implements `AsRef<[u8]>` (iSynaptic)
* Bumped RocksDB to version 5.17.2 (aleksuss)
* Added `set_readahead_size` to `ReadOptions` (iSynaptic)
* Updated main example in doc tests (mohanson)
* Updated requirements documentation (jamesray1)
* Implemented `AsRef<[u8]>` for `DBVector` (iSynaptic)


## 0.11.0 (2019-01-10)

### Announcements

* This is the first release under the new [Maintainership](MAINTAINERSHIP.md) model.
  Three contributors have been selected to help maintain this library -- Oleksandr Anyshchenko ([@aleksuss](https://github.com/aleksuss)), Jordan Terrell ([@iSynaptic](https://github.com/iSynaptic)), and Ilya Bogdanov ([@vitvakatu](https://github.com/vitvakatu)). Many thanks to Tyler Neely ([@spacejam](https://github.com/spacejam)) for your support while taking on this new role.

* A [gitter.im chat room](https://gitter.im/rust-rocksdb/Lobby) has been created. Although it's not guaranteed to be "staffed", it may help to collaborate on changes to `rust-rocksdb`.

### Changes

* added LZ4, ZSTD, ZLIB, and BZIP2 compression support (iSynaptic)
* added support for `Checkpoint` (aleksuss)
* added support for `SliceTransform` (spacejam)
* added `DBPath` struct to ensure test databases are cleaned up (ekmartin, iSynaptic)
* fixed `rustfmt.toml` to work with newer `rustfmt` version (ekmartin, iSynaptic)
* bindgen bumped up to 0.43 (s-panferov)
* made `ColumnFamily` struct `Send` (Tpt)
* made `DBIterator` struct `Send` (Elzor)
* `create_cf` and `drop_cf` methods on `DB` now work with immutable references (aleksuss)
* fixed crash in `test_column_family` test on macOS (aleksuss)
* fixed/implemented CI builds for macOS and Windows (aleksuss, iSynaptic)
* exposed `set_skip_stats_update_on_db_open` option (romanz)
* exposed `keep_log_file_num` option (romanz)
* added ability to retrieve `WriteBatch` serialized size (romanz)
* added `set_options` method to `DB` to allow changing options without closing and re-opening the database (romanz)


## 0.10.1 (2018-07-17)

* bump bindgen to 0.37 (ekmartin)
* bump rocksdb to 5.14.2 (ekmartin)
* add disable_cache to block-based options (ekmartin)
* add set_wal_dir (ekmartin)
* add set_memtable_prefix_bloom_ratio (ekmartin)
* add MemtableFactory support (ekmartin)
* add full_iterator (ekmartin)
* allow index type specification on block options (ekmartin)
* fix windows build (iSynaptic)

## 0.10.0 (2018-03-17)

* Bump rocksdb to 5.11.3 (spacejam)

### New Features

* Link with system rocksdb and snappy libs through envvars (ozkriff)

### Breaking Changes

* Fix reverse iteration from a given key (ongardie)

## 0.9.1 (2018-02-10)

### New Features

* SliceTransform support (spacejam)

## 0.9.0 (2018-02-10)

### New Features

* Allow creating iterators over prefixes (glittershark)

### Breaking Changes

* Open cfs with options (garyttierney, rrichardson)
* Non-Associative merge ops (rrichardson)

## 0.8.3 (2018-02-10)

* Bump rocksdb to 5.10.2 (ongardie)
* Add Send marker to Options (iSynaptic)
* Expose advise_random_on_open option (ongardie)

## 0.8.2 (2017-12-28)

* Bump rocksdb to 5.7.1 (jquesnelle)

## 0.8.1 (2017-09-08)

* Added list_cf (jeizsm)

## 0.8.0 (2017-09-02)

* Removed set_disable_data_sync (glittershark)

## 0.7.2 (2017-09-02)

* Bumped rocksdb to 5.6.2 (spacejam)

## 0.7.1 (2017-08-29)

* Bumped rocksdb to 5.6.1 (vmx)

## 0.7 (2017-07-26)

### Breaking Changes

* Bumped rocksdb to 5.4.6 (derekdreery)
* Remove `use_direct_writes` now that `use_direct_io_for_flush_and_compaction` exists (derekdreery)

### New Features

* ReadOptions is now public (rschmukler)
* Implement Clone and AsRef<str> for Error (daboross)
* Support for `seek_for_prev` (kaedroho)
* Support for DirectIO (kaedroho)

### Internal Cleanups

* Fixed race condition in tests (debris)
* Move tests to the default `tests` directory (vmx)

## 0.6.1 (2017-03-13)

### New Features

* Support for raw iterator access (kaedroho)

## 0.6 (2016-12-18)

### Breaking Changes

* Comparator function now returns an Ordering (alexreg)

### New Features

* Compaction filter (tmccombs)
* Support for backups (alexreg)

0.5 (2016-11-20)

### Breaking changes

* No more Writable trait, as WriteBatch is not thread-safe as a DB (spacejam)
* All imports of `rocksdb::rocksdb::*` should now be simply `rocksdb::*` (alexreg)
* All errors changed to use a new `rocksdb::Error` type (kaedroho, alexreg)
* Removed `Options.set_filter_deletes` as it was removed in RocksDB (kaedroho)
* Renamed `add_merge_operator` to `set_merge_operator` and `add_comparator` to `set_comparator` (kaedroho)

### New Features

* Windows support (development by jsgf and arkpar. ported by kaedroho)
* The RocksDB library is now built at crate compile-time and statically linked with the resulting binary (development by jsgf and arkpar. ported by kaedroho)
* Cleaned up and improved coverage and tests of the ffi module (alexreg)
* Added many new methods to the `Options` type (development by ngaut, BusyJay, zhangjinpeng1987, siddontang and hhkbp2. ported by kaedroho)
* Added `len` and `is_empty` methods to `WriteBatch` (development by siddontang. ported by kaedroho)
* Added `path` mathod to `DB` (development by siddontang. ported by kaedroho)
* `DB::open` now accepts any type that implements `Into<Path>` as the path argument (kaedroho)
* `DB` now implements the `Debug` trait (kaedroho)
* Add iterator_cf to snapshot (jezell)
* Changelog started