Chen Shen 78cb6b6112 Provide byte[] version of SstFileWriter.merge to reduce GC Stall ... Summary: In Java API, `SstFileWriter.put/merge/delete` takes `Slice` type of key and value, which is a Java wrapper object around C++ Slice object. The Slice object inherited [ `finalize`](3c327ac2d0/java/src/main/java/org/rocksdb/AbstractNativeReference.java (L69)) method, which [added huge overhead](https://softwareengineering.stackexchange.com/questions/288715/is-overriding-object-finalize-really-bad/288753#288753) to JVM while creating new SstFile. To address this issue, this PR overload the merge method to take Java byte array instead of the Slice object, and added unit test for it. We also benchmark these two different merge function, where we could see GC Stall reduced from 50% to 1%, and the throughput increased from 50MB to 200MB. Closes https://github.com/facebook/rocksdb/pull/2746 Reviewed By: sagar0 Differential Revision: D5653145 Pulled By: scv119 fbshipit-source-id: b55ea58554b573d0b1c6f6170f8d9223811bc4f5		2017-08-22 12:55:24 -07:00
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benchmark/src/main/java/org/rocksdb/benchmark	Change RocksDB License	2017-07-15 16:11:23 -07:00
crossbuild	Switch from CentOS 5 to CentOS 6 for crossbuilding RocksJava	2017-06-05 12:27:24 -07:00
rocksjni	Provide byte[] version of SstFileWriter.merge to reduce GC Stall	2017-08-22 12:55:24 -07:00
samples/src/main/java	Fix statistics in RocksJava sample	2017-08-01 16:58:26 -07:00
src	Provide byte[] version of SstFileWriter.merge to reduce GC Stall	2017-08-22 12:55:24 -07:00
CMakeLists.txt	Fix for CMakeLists.txt on Windows for RocksJava	2017-08-12 16:44:12 -07:00
HISTORY-JAVA.md	Update JAVA-HISTORY.md for v3.13	2015-08-04 18:12:58 -07:00
jdb_bench.sh	Moved Java Benchmark main classes into benchmark/src/main/java	2015-02-01 20:05:10 +00:00
Makefile	Cassandra compaction filter for purge expired columns and rows	2017-07-21 14:57:44 -07:00
RELEASE.md	Fixed packaging of java crossbuild jar by forcing all compiled binaries to be output to the java/target directory. The uber crossbuild jar is then assembled within the java/target directory.	2015-10-12 20:29:58 -04:00
rocksjni.pom	Update java/rocksjni.pom	2017-07-18 13:12:23 -07:00