Summary:
Uniformly use GetByteArrayRegion() instead of GetByteArrayElements()
to copy bytes.
In addition, it can avoid an inefficient ReleaseByteArrayElements()
operation.
Some benefits of GetByteArrayRegion() can be referred to:
https://stackoverflow.com/a/2480493
Pull Request resolved: https://github.com/facebook/rocksdb/pull/9380
Reviewed By: ajkr
Differential Revision: D35135474
Pulled By: jay-zhuang
fbshipit-source-id: a32c1774d37f2d22b9bcd105d83e0bb984b71b54
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.
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.
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.
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