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rocksdb
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Add history log and revise script 

Summary:
* Add a change log for rocksdb releases.
* Remove the hacky parts of make_new_version.sh, which are either
  no longer useful or will be done in our dedicated 3rd-party release
  tool.

Test Plan: N/A

Reviewers: igor, haobo, sdong, dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D15543
This commit is contained in:
kailiu 2014-01-28 13:06:09 -08:00
parent 9a126ba3b3
commit 9fe60d50ff
2 changed files with 39 additions and 21 deletions
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39
HISTORY.md Normal file
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@ -0,0 +1,39 @@
# Rocksdb Change Log
## 2.7.0 (01/28/2014)
### Public API changes
* Renamed `StackableDB::GetRawDB()` to `StackableDB::GetBaseDB()`.
* Renamed `WriteBatch::Data()` `const std::string& Data() const`.
* Renamed class `TableStats` to `TableProperties`.
* Deleted class `PrefixHashRepFactory`. Please use `NewHashSkipListRepFactory()` instead.
* Supported multi-threaded `EnableFileDeletions()` and `DisableFileDeletions()`.
* Added `DB::GetOptions()`.
* Added `DB::GetDbIdentity()`.
### New Features
* Added [BackupableDB](https://github.com/facebook/rocksdb/wiki/How-to-backup-RocksDB%3F)
* Implemented [TailingIterator](https://github.com/facebook/rocksdb/wiki/Tailing-Iterator), a special type of iterator that
doesn't create a snapshot (can be used to read newly inserted data)
and is optimized for doing sequential reads.
* Added property block for table, which allows (1) a table to store
its metadata and (2) end user to collect and store properties they
are interested in.
* Enabled caching index and filter block in block cache (turned off by default).
* Supported error report when doing manual compaction.
* Supported additional Linux platform flavors and Mac OS.
* Put with `SliceParts` - Variant of `Put()` that gathers output like `writev(2)`
* Bug fixes and code refactor for compatibility with upcoming Column
Family feature.
### Performance Improvements
* Huge benchmark performance improvements by multiple efforts. For example, increase in readonly QPS from about 530k in 2.6 release to 1.1 million in 2.7 [1]
* Speeding up a way RocksDB deleted obsolete files - no longer listing the whole directory under a lock -- decrease in p99
* Use raw pointer instead of shared pointer for statistics: [5b825d](https://github.com/facebook/rocksdb/commit/5b825d6964e26ec3b4bb6faa708ebb1787f1d7bd) -- huge increase in performance -- shared pointers are slow
* Optimized locking for `Get()` -- [1fdb3f](https://github.com/facebook/rocksdb/commit/1fdb3f7dc60e96394e3e5b69a46ede5d67fb976c) -- 1.5x QPS increase for some workloads
* Cache speedup - [e8d40c3](https://github.com/facebook/rocksdb/commit/e8d40c31b3cca0c3e1ae9abe9b9003b1288026a9)
* Implemented autovector, which allocates first N elements on stack. Most of vectors in RocksDB are small. Also, we never want to allocate heap objects while holding a mutex. -- [c01676e4](https://github.com/facebook/rocksdb/commit/c01676e46d3be08c3c140361ef1f5884f47d3b3c)
* Lots of efforts to move malloc, memcpy and IO outside of locks

21
build_tools/make_new_version.sh
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@ -27,7 +27,6 @@ if [ $GIT_BRANCH != "master" ]; then
echo "Error: Current branch is '$GIT_BRANCH', Please switch to master branch."
fi
# --Step 1: cutting new tag
title "Adding new tag for this release ..."
git tag -a "$ROCKSDB_VERSION.fb" -m "Rocksdb $ROCKSDB_VERSION"
@ -38,24 +37,4 @@ export https_proxy="$http_proxy";
title "Pushing new tag to remote repo ..."
proxycmd.sh git push origin --tags
# --Step 2: Update README.fb
title "Updating the latest version info in README.fb ..."
sed -i "s/Latest release is [0-9]\+.[0-9]\+.fb/Latest release is $ROCKSDB_VERSION.fb/" README.fb
git commit README.fb -m "update the latest version in README.fb to $ROCKSDB_VERSION"
proxycmd.sh git push
# --Step 3: Prepare this repo for 3rd release
title "Cleaning up repo ..."
make clean
git clean -fxd
title "Generating the build info ..."
# Comment out the call of `build_detection_version` so that the SHA number and build date of this
# release will remain constant. Otherwise everytime we run "make" util/build_version.cc will be
# overridden.
sed -i 's/^\$PWD\/build_tools\/build_detect_version$//' build_tools/build_detect_platform
# Generate util/build_version.cc
build_tools/build_detect_version
title "Done!"