1fb3593f25
Summary: When MultiGet is called with duplicate keys, and the key matches the largest key in an SST file and the value type is merge, only the first instance of the duplicate key is returned with correct results. This is due to the incorrect assumption that if a key in a batch is equal to the largest key in the file, the next key cannot be present in that file. Tests: Add a new unit test Pull Request resolved: https://github.com/facebook/rocksdb/pull/6953 Reviewed By: cheng-chang Differential Revision: D21935898 Pulled By: anand1976 fbshipit-source-id: a2cc327a15150e23fd997546ca64d1c33021cb4c
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 especially 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/ and https://rocksdb.slack.com/
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.