423d051124
Summary: The patch cleans up a few things in `CompactionJob::SubcompactionState`: * Instead of using both the member initializer list and in-class initializers (and sometimes both at the same time for the same member), the struct now uniformly uses the latter to initialize integer members. * The default parameter value for the constructor parameter `size` is removed. * The explicitly deleted copy operations are removed, since they are implicitly deleted anyways because of the `unique_ptr` members. * The handwritten move operations, which did not move the member `c_iter` and were not declared `nothrow`, are removed. Note that with the user-declared copy operations gone (see the previous item), we can rely on the compiler to (correctly) generate these methods. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7322 Test Plan: `make check` Reviewed By: siying Differential Revision: D23382408 Pulled By: ltamasi fbshipit-source-id: a4ae5af150161c50ff7bdc07fa145482d0150bfe
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.