b02d0c238d
Summary: At least one of the meta-block loading functions (`ReadRangeDelBlock`) uses the same block reading function (`NewDataBlockIterator`) as data block reads, which means it uses the dictionary handle. However, the dictionary handle was uninitialized while reading meta-blocks, causing readers to receive an error. This situation was only noticed when `cache_index_and_filter_blocks=true`. This PR initializes the handle to null while reading meta-blocks to prevent the error. It also adds support to `db_stress` / `db_crashtest.py` for `cache_index_and_filter_blocks`. Fixes #5263. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5267 Differential Revision: D15149264 Pulled By: maysamyabandeh fbshipit-source-id: 991d38a306c62db5976778bfb050fa3cd4a0671b
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.