14cee194d6
Summary: Once per `ingest_external_file_one_in` operations, uses SstFileWriter to create a file containing `ingest_external_file_width` consecutive keys. The file is named containing the thread ID to avoid clashes. The file is then added to the DB using `IngestExternalFile`. We can't enable it by default in crash test because `nooverwritepercent` and `test_batches_snapshot` both must be zero for the DB's whole lifetime. Perhaps we should setup a separate test with that config as range deletion also requires it. Closes https://github.com/facebook/rocksdb/pull/4018 Differential Revision: D8507698 Pulled By: ajkr fbshipit-source-id: 1437ea26fd989349a9ce8b94117241c65e40f10f
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.