Summary:
closes https://github.com/facebook/rocksdb/issues/8039
Unnecessary use of multiple local JNI references at the same time, 1 per key, was limiting the size of the key array. The local references don't need to be held simultaneously, so if we rearrange the code we can make it work for bigger key arrays.
Incidentally, make errors throw helpful exception messages rather than returning a null pointer.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/9012
Reviewed By: mrambacher
Differential Revision: D31580862
Pulled By: jay-zhuang
fbshipit-source-id: ce05831d52ede332e1b20e74d2dc621d219b9616
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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