Revision c5abf78bca035f9719b9d47e73e00bed20b7153d authored by Andrew Kryczka on 28 May 2020, 17:49:02 UTC, committed by Facebook GitHub Bot on 28 May 2020, 17:51:30 UTC
Summary: `IterKey::UpdateInternalKey()` is an error-prone API as it's incompatible with `IterKey::TrimAppend()`, which is used for decoding delta-encoded internal keys. This PR stops using it in `BlockIter`. Instead, it assigns global seqno in a separate `IterKey`'s buffer when needed. The logic for safely getting a Slice with global seqno properly assigned is encapsulated in `GlobalSeqnoAppliedKey`. `BinarySeek()` is also migrated to use this API (previously it ignored global seqno entirely). Pull Request resolved: https://github.com/facebook/rocksdb/pull/6843 Test Plan: benchmark setup -- single file DBs, in-memory, no compression. "normal_db" created by regular flush; "ingestion_db" created by ingesting a file. Both DBs have same contents. ``` $ TEST_TMPDIR=/dev/shm/normal_db/ ./db_bench -benchmarks=fillrandom,compact -write_buffer_size=10485760000 -disable_auto_compactions=true -compression_type=none -num=1000000 $ ./ldb write_extern_sst ./tmp.sst --db=/dev/shm/ingestion_db/dbbench/ --compression_type=no --hex --create_if_missing < <(./sst_dump --command=scan --output_hex --file=/dev/shm/normal_db/dbbench/000007.sst | awk 'began {print "0x" substr($1, 2, length($1) - 2), "==>", "0x" $5} ; /^Sst file format: block-based/ {began=1}') $ ./ldb ingest_extern_sst ./tmp.sst --db=/dev/shm/ingestion_db/dbbench/ ``` benchmark run command: ``` TEST_TMPDIR=/dev/shm/$DB/ ./db_bench -benchmarks=seekrandom -seek_nexts=10 -use_existing_db=true -cache_index_and_filter_blocks=false -num=1000000 -cache_size=1048576000 -threads=1 -reads=40000000 ``` results: | DB | code | throughput | |---|---|---| | normal_db | master | 267.9 | | normal_db | PR6843 | 254.2 (-5.1%) | | ingestion_db | master | 259.6 | | ingestion_db | PR6843 | 250.5 (-3.5%) | Reviewed By: pdillinger Differential Revision: D21562604 Pulled By: ajkr fbshipit-source-id: 937596f836930515da8084d11755e1f247dcb264
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LANGUAGE-BINDINGS.md
This is the list of all known third-party language bindings for RocksDB. If something is missing, please open a pull request to add it.
* Java - https://github.com/facebook/rocksdb/tree/master/java
* Python
* http://python-rocksdb.readthedocs.io/en/latest/
* http://pyrocksdb.readthedocs.org/en/latest/ (unmaintained)
* Perl - https://metacpan.org/pod/RocksDB
* Node.js - https://npmjs.org/package/rocksdb
* Go - https://github.com/tecbot/gorocksdb
* Ruby - http://rubygems.org/gems/rocksdb-ruby
* Haskell - https://hackage.haskell.org/package/rocksdb-haskell
* PHP - https://github.com/Photonios/rocksdb-php
* C# - https://github.com/warrenfalk/rocksdb-sharp
* Rust
* https://github.com/pingcap/rust-rocksdb (used in production fork of https://github.com/spacejam/rust-rocksdb)
* https://github.com/spacejam/rust-rocksdb
* https://github.com/bh1xuw/rust-rocks
* D programming language - https://github.com/b1naryth1ef/rocksdb
* Erlang - https://gitlab.com/barrel-db/erlang-rocksdb
* Elixir - https://github.com/urbint/rox
* Nim - https://github.com/status-im/nim-rocksdb
* Swift and Objective-C (iOS/OSX) - https://github.com/iabudiab/ObjectiveRocks
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