Summary:
Loose ends relate to mmap on 32-bit systems. (Testing is more
complicated when the feature was completely disabled on 32-bit.)
Pull Request resolved: https://github.com/facebook/rocksdb/pull/9386
Test Plan: CI
Reviewed By: ajkr
Differential Revision: D33590715
Pulled By: pdillinger
fbshipit-source-id: f2637036a538a552200adee65b6765fce8cae27b
main
Peter Dillinger3 years agocommitted byFacebook GitHub Bot
* Made the Env class extend the Customizable class. Implementations need to be registered with the ObjectRegistry and to implement a Name() method in order to be created via this method.
* `Options::OldDefaults` is marked deprecated, as it is no longer maintained.
* Add ObjectLibrary::AddFactory and ObjectLibrary::PatternEntry classes. This method and associated class are the preferred mechanism for registering factories with the ObjectLibrary going forward. The ObjectLibrary::Register method, which uses regular expressions and may be problematic, is deprecated and will be in a future release.
* Changed `BlockBasedTableOptions::block_size` from `size_t` to `uint64_t`.
* Added API warning against using `Iterator::Refresh()` together with `DB::DeleteRange()`, which are incompatible and have always risked causing the refreshed iterator to return incorrect results.
### Behavior Changes
* `DB::DestroyColumnFamilyHandle()` will return Status::InvalidArgument() if called with `DB::DefaultColumnFamily()`.
* On 32-bit platforms, mmap reads are no longer quietly disabled, just discouraged.
### New Features
* Added `Options::DisableExtraChecks()` that can be used to improve peak write performance by disabling checks that should not be necessary in the absence of software logic errors or CPU+memory hardware errors. (Default options are slowly moving toward some performance overheads for extra correctness checking.)
@ -22,6 +24,9 @@
* Fixed a bug of Sync() and Fsync() not using `fcntl(F_FULLFSYNC)` on OS X and iOS.
* Fixed a significant performance regression in version 6.26 when a prefix extractor is used on the read path (Seek, Get, MultiGet). (Excessive time was spent in SliceTransform::AsString().)
### New Features
* Added RocksJava support for MacOS universal binary (ARM+x86)
## 6.28.0 (2021-12-17)
### New Features
* Introduced 'CommitWithTimestamp' as a new tag. Currently, there is no API for user to trigger a write with this tag to the WAL. This is part of the efforts to support write-commited transactions with user-defined timestamps.