5b77e34985
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/15334 External table formats cannot currently persist range tombstones, so SST ingestion and full-mode DB flushes or compactions fail when they contain `DeleteRange` entries. This change adds an opt-in contract for storing RocksDB’s canonical range-deletion block. RocksDB retains responsibility for sequence-number handling, fragmentation, and visibility through its native range-tombstone iterators. Existing factories remain unsupported by default, and existing files without range tombstones are unaffected. Missing or invalid advertised tombstone blocks are treated as corruption. RocksDB also supplies logical entry counts and sizes when a format does not persist the properties block, while preserving format-specific properties. Reviewed By: xingbowang Differential Revision: D123475827 fbshipit-source-id: de8fec401bdc311282f5d4a48b248875c682f7c9
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/main/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.
Questions and discussions are welcome on the RocksDB Developers Public Facebook group and email list on Google Groups.
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.