A library that provides an embeddable, persistent key-value store for fast storage.
84c5c9aab1
Summary: Fixed a bug in compaction reads due to which incorrect number of bytes were being read/utilized. The bug was introduced in https://github.com/facebook/rocksdb/issues/5498 , resulting in "Corruption: block checksum mismatch" and "heap-buffer-overflow" asan errors in our tests. https://github.com/facebook/rocksdb/issues/5498 was introduced recently and is not in any released versions. ASAN: ``` > ==2280939==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6250005e83da at pc 0x000000d57f62 bp 0x7f954f483770 sp 0x7f954f482f20 > === How to use this, how to get the raw stack trace, and more: fburl.com/ASAN === > READ of size 4 at 0x6250005e83da thread T4 > SCARINESS: 27 (4-byte-read-heap-buffer-overflow-far-from-bounds) > #0 tests+0xd57f61 __asan_memcpy > https://github.com/facebook/rocksdb/issues/1 rocksdb/src/util/coding.h:124 rocksdb::DecodeFixed32(char const*) > https://github.com/facebook/rocksdb/issues/2 rocksdb/src/table/block_fetcher.cc:39 rocksdb::BlockFetcher::CheckBlockChecksum() > https://github.com/facebook/rocksdb/issues/3 rocksdb/src/table/block_fetcher.cc:99 rocksdb::BlockFetcher::TryGetFromPrefetchBuffer() > https://github.com/facebook/rocksdb/issues/4 rocksdb/src/table/block_fetcher.cc:209 rocksdb::BlockFetcher::ReadBlockContents() > https://github.com/facebook/rocksdb/issues/5 rocksdb/src/table/block_based/block_based_table_reader.cc:93 rocksdb::(anonymous namespace)::ReadBlockFromFile(rocksdb::RandomAccessFileReader*, rocksdb::FilePrefetchBuffer*, rocksdb::Footer const&, rocksdb::ReadOptions const&, rocksdb::BlockHandle const&, std::unique_ptr<...>*, rocksdb::ImmutableCFOptions const&, bool, bool, rocksdb::UncompressionDict const&, rocksdb::PersistentCacheOptions const&, unsigned long, unsigned long, rocksdb::MemoryAllocator*, bool) > https://github.com/facebook/rocksdb/issues/6 rocksdb/src/table/block_based/block_based_table_reader.cc:2331 rocksdb::BlockBasedTable::RetrieveBlock(rocksdb::FilePrefetchBuffer*, rocksdb::ReadOptions const&, rocksdb::BlockHandle const&, rocksdb::UncompressionDict const&, rocksdb::CachableEntry<...>*, rocksdb::BlockType, rocksdb::GetContext*, rocksdb::BlockCacheLookupContext*, bool) const > https://github.com/facebook/rocksdb/issues/7 rocksdb/src/table/block_based/block_based_table_reader.cc:2090 rocksdb::DataBlockIter* rocksdb::BlockBasedTable::NewDataBlockIterator<...>(rocksdb::ReadOptions const&, rocksdb::BlockHandle const&, rocksdb::DataBlockIter*, rocksdb::BlockType, bool, bool, rocksdb::GetContext*, rocksdb::BlockCacheLookupContext*, rocksdb::Status, rocksdb::FilePrefetchBuffe r*, bool) const > https://github.com/facebook/rocksdb/issues/8 rocksdb/src/table/block_based/block_based_table_reader.cc:2720 rocksdb::BlockBasedTableIterator<...>::InitDataBlock() > https://github.com/facebook/rocksdb/issues/9 rocksdb/src/table/block_based/block_based_table_reader.cc:2607 rocksdb::BlockBasedTableIterator<...>::SeekToFirst() > https://github.com/facebook/rocksdb/issues/10 rocksdb/src/table/iterator_wrapper.h:83 rocksdb::IteratorWrapperBase<...>::SeekToFirst() > https://github.com/facebook/rocksdb/issues/11 rocksdb/src/table/merging_iterator.cc:100 rocksdb::MergingIterator::SeekToFirst() > https://github.com/facebook/rocksdb/issues/12 rocksdb/compaction/compaction_job.cc:877 rocksdb::CompactionJob::ProcessKeyValueCompaction(rocksdb::CompactionJob::SubcompactionState*) > https://github.com/facebook/rocksdb/issues/13 rocksdb/compaction/compaction_job.cc:590 rocksdb::CompactionJob::Run() > https://github.com/facebook/rocksdb/issues/14 rocksdb/db_impl/db_impl_compaction_flush.cc:2689 rocksdb::DBImpl::BackgroundCompaction(bool*, rocksdb::JobContext*, rocksdb::LogBuffer*, rocksdb::DBImpl::PrepickedCompaction*, rocksdb::Env::Priority) > https://github.com/facebook/rocksdb/issues/15 rocksdb/db_impl/db_impl_compaction_flush.cc:2248 rocksdb::DBImpl::BackgroundCallCompaction(rocksdb::DBImpl::PrepickedCompaction*, rocksdb::Env::Priority) > https://github.com/facebook/rocksdb/issues/16 rocksdb/db_impl/db_impl_compaction_flush.cc:2024 rocksdb::DBImpl::BGWorkCompaction(void*) > https://github.com/facebook/rocksdb/issues/23 rocksdb/src/util/threadpool_imp.cc:266 rocksdb::ThreadPoolImpl::Impl::BGThread(unsigned long) > https://github.com/facebook/rocksdb/issues/24 rocksdb/src/util/threadpool_imp.cc:307 rocksdb::ThreadPoolImpl::Impl::BGThreadWrapper(void*) ``` Pull Request resolved: https://github.com/facebook/rocksdb/pull/5531 Test Plan: Verified that this fixes the fb-internal Logdevice test which caught the issue. Differential Revision: D16109702 Pulled By: sagar0 fbshipit-source-id: 1fc08549cf7b553e338a133ae11eb9f4d5011914 |
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| cache | ||
| cmake | ||
| coverage | ||
| db | ||
| docs | ||
| env | ||
| examples | ||
| file | ||
| hdfs | ||
| include/rocksdb | ||
| java | ||
| logging | ||
| memory | ||
| memtable | ||
| monitoring | ||
| options | ||
| port | ||
| table | ||
| test_util | ||
| third-party/gtest-1.7.0/fused-src/gtest | ||
| tools | ||
| trace_replay | ||
| util | ||
| utilities | ||
| .clang-format | ||
| .gitignore | ||
| .lgtm.yml | ||
| .travis.yml | ||
| appveyor.yml | ||
| AUTHORS | ||
| CMakeLists.txt | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| COPYING | ||
| DEFAULT_OPTIONS_HISTORY.md | ||
| defs.bzl | ||
| DUMP_FORMAT.md | ||
| HISTORY.md | ||
| INSTALL.md | ||
| issue_template.md | ||
| LANGUAGE-BINDINGS.md | ||
| LICENSE.Apache | ||
| LICENSE.leveldb | ||
| Makefile | ||
| README.md | ||
| ROCKSDB_LITE.md | ||
| src.mk | ||
| TARGETS | ||
| thirdparty.inc | ||
| USERS.md | ||
| Vagrantfile | ||
| WINDOWS_PORT.md | ||
RocksDB: A Persistent Key-Value Store for Flash and RAM Storage
RocksDB is developed and maintained by Facebook Database Engineering Team. It is built on earlier work on LevelDB by Sanjay Ghemawat (sanjay@google.com) and Jeff Dean (jeff@google.com)
This code is a library that forms the core building block for a fast key value server, especially suited for storing data on flash drives. It has a Log-Structured-Merge-Database (LSM) design with flexible tradeoffs between Write-Amplification-Factor (WAF), Read-Amplification-Factor (RAF) and Space-Amplification-Factor (SAF). It has multi-threaded compactions, making it specially suitable for storing multiple terabytes of data in a single database.
Start with example usage here: https://github.com/facebook/rocksdb/tree/master/examples
See the github wiki for more explanation.
The public interface is in include/. Callers should not include or
rely on the details of any other header files in this package. Those
internal APIs may be changed without warning.
Design discussions are conducted in https://www.facebook.com/groups/rocksdb.dev/
License
RocksDB is dual-licensed under both the GPLv2 (found in the COPYING file in the root directory) and Apache 2.0 License (found in the LICENSE.Apache file in the root directory). You may select, at your option, one of the above-listed licenses.