a265ac75ab
Summary: Return early in case there are zero data blocks when `BlockBasedTableBuilder::EnterUnbuffered()` is called. This crash can only be triggered by applying dictionary compression to SST files that contain only range tombstones. It cannot be triggered by a low buffer limit alone since we only consider entering unbuffered mode after buffering a data block causing the limit to be breached, or `Finish()`ing the file. It also cannot be triggered by a totally empty file because those go through `Abandon()` rather than `Finish()` so unbuffered mode is never entered. Pull Request resolved: https://github.com/facebook/rocksdb/pull/8141 Test Plan: added a unit test that repro'd the "Floating point exception" Reviewed By: riversand963 Differential Revision: D27495640 Pulled By: ajkr fbshipit-source-id: a463cfba476919dc5c5c380800a75a86c31ffa23
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.