CHANGELOG.md · equalll/Sonic

Sonic Changelog
===============

## 1.1.9 (2019-03-29)

### Bug Fixes

* RocksDB has been bumped to `v5.18.3`, which fixes a dead-lock occuring in RocksDB at scale when a compaction task is ran under heavy disk writes (ie. disk flushes). This dead-lock was causing Sonic to stop responding to any command issued for the frozen collection. This dead-lock was due to a bug in RocksDB internals (not originating from Sonic itself) [[@baptistejamin](https://github.com/baptistejamin), [19c4a10](https://github.com/baptistejamin/sonic/commit/19c4a104a6d6aaed1dd9beb2e51d2639627825cd)].

### Changes

* Reworked the `FLUSHB` command internals, which now use the atomic `delete_range()` operation provided by RocksDB `v5.18` [[@valeriansaliou](https://github.com/valeriansaliou), [660f8b7](https://github.com/valeriansaliou/sonic/commit/660f8b714d968400fb9f88a245752dca02249bf7)].

### New Features

* Added the `LANG(<locale>)` command modifier for `QUERY` and `PUSH`, that lets a Sonic Channel client force a text locale (instead of letting the lexer system guess the text language) [[@valeriansaliou](https://github.com/valeriansaliou), [#75](https://github.com/valeriansaliou/sonic/issues/75)].
* The FST word lookup system, used by the `SUGGEST` command, now support all scripts via a restricted Unicode range forward scan [[@valeriansaliou](https://github.com/valeriansaliou), [#64](https://github.com/valeriansaliou/sonic/issues/64)].

## 1.1.8 (2019-03-27)

### Bug Fixes

* A store acquire lock has been added to prevent 2 concurrent threads from opening the same collection at the same time [[@valeriansaliou](https://github.com/valeriansaliou), [2628077](https://github.com/valeriansaliou/sonic/commit/2628077ebe7e24155975962471e7653745a0add7)].

## 1.1.7 (2019-03-27)

### Bug Fixes

* A superfluous mutex was removed from KV and FST store managers, in an attempt to solve a rare dead-lock occurring on high-traffic Sonic setups in the KV store [[@valeriansaliou](https://github.com/valeriansaliou), [60566d2](https://github.com/valeriansaliou/sonic/commit/60566d2f087fd6725dba4a60c3c5a3fef7e8399b)].

## 1.1.6 (2019-03-27)

### Changes

* Reverted changes made in `v1.1.5` regarding the open files `rlimit`, as this can be set from outside Sonic [[@valeriansaliou](https://github.com/valeriansaliou), [f6400c6](https://github.com/valeriansaliou/sonic/commit/f6400c61a9a956130ae0bdaa9a164f4955cd2a18)].
* Added Chinese Traditional stopwords [[@dsewnr](https://github.com/dsewnr), [#87](https://github.com/valeriansaliou/sonic/issues/87)].

### Bug Fixes

* Improved the way database locking is handled when calling a pool janitor; this prevents potential dead-locks under high load [[@valeriansaliou](https://github.com/valeriansaliou), [fa78372](https://github.com/valeriansaliou/sonic/commit/fa783728fd27a116b8dcf9a7180740d204b69aa4)].

## 1.1.5 (2019-03-27)

### New Features

* Added the `server.limit_open_files` configuration variable to allow configuring `rlimit` [[@valeriansaliou](https://github.com/valeriansaliou)].

## 1.1.4 (2019-03-27)

### Changes

* Added Kannada stopwords [[@dileepbapat](https://github.com/dileepbapat)].
* The Docker image is now much lighter [[@codeflows](https://github.com/codeflows)].

### New Features

* Automatically adjust `rlimit` for the process to the hard limit allowed by the system (allows opening more FSTs in parallel) [[@valeriansaliou](https://github.com/valeriansaliou)].

## 1.1.3 (2019-03-25)

### Changes

* Limit the size of words that can hit against the FST graph, as the FST gets slower for long words [[@valeriansaliou](https://github.com/valeriansaliou), [#81](https://github.com/valeriansaliou/sonic/issues/81)].

### Bug Fixes

* Rework Sonic Channel buffer management using a VecDeque (Sonic should now work better in harsh network environments) [[@valeriansaliou](https://github.com/valeriansaliou), [1c2b9c8](https://github.com/valeriansaliou/sonic/commit/1c2b9c8fcd28b033a7cb80d678c388ce78ab989d)].

## 1.1.2 (2019-03-24)

### Changes

* FST graph consolidation locking strategy has been improved even further, based on issues with the previous rework we have noticed at scale in production (now, consolidation locking is done at a lower-priority relative to actual queries and pushes to the index) [[@valeriansaliou](https://github.com/valeriansaliou), [#68](https://github.com/valeriansaliou/sonic/issues/68)].

## 1.1.1 (2019-03-24)

### Changes

* FST graph consolidation locking strategy has been reworked as to allow queries to be executed lock-free when the FST consolidate task takes a lot of time (previously, queries were being deferred due to an ongoing FST consolidate task) [[@valeriansaliou](https://github.com/valeriansaliou), [#68](https://github.com/valeriansaliou/sonic/issues/68)].
* Removed special license clause introduced in `v1.0.2`, Sonic is full `MPL 2.0` now. [[@valeriansaliou](https://github.com/valeriansaliou)]

## 1.1.0 (2019-03-21)

### Breaking Changes

* Change how buckets are stored in a KV-based collection (nest them in the same RocksDB database; this is much more efficient on setups with a large number of buckets - **`v1.1.0` is incompatible with the `v1.0.0` KV database format**) [[@valeriansaliou](https://github.com/valeriansaliou)].

### Changes

* Bump `jemallocator` to version `0.3` [[@valeriansaliou](https://github.com/valeriansaliou)].

## 1.0.2 (2019-03-20)

### Changes

* Re-license from `MPL 2.0` to `SOSSL 1.0` (Sonic has a special license clause) [[@valeriansaliou](https://github.com/valeriansaliou)].

## 1.0.1 (2019-03-19)

### Changes

* Added automated benchmarks (can be ran via `cargo bench --features benchmark`) [[@valeriansaliou](https://github.com/valeriansaliou)].
* Reduced the time to query the search index by 50% via optimizations (in multiple methods, eg. the lexer) [[@valeriansaliou](https://github.com/valeriansaliou)].

## 1.0.0 (2019-03-18)

### New Features

* Initial Sonic release [[@valeriansaliou](https://github.com/valeriansaliou)].

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