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[Java] Add Java support for cache sharding.

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Summary:
Add setCacheNumShardBits() and cacheNumShardBits() to Options.  This allows
developers to control the number of shards for the block cache.

Test Plan:
make rocksdbjava
cd java
make db_bench
./jdb_bench.sh --cache_size=1048576 --cache_numshardbits=6

Reviewers: sdong, ljin, ankgup87

Reviewed By: ankgup87

Subscribers: leveldb

Differential Revision: https://reviews.facebook.net/D19347
This commit is contained in:
Yueh-Hsuan Chiang
2014-07-22 09:48:37 -07:00
parent ae7743f226
commit d19aa25594
5 changed files with 49 additions and 5 deletions
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2
java/RocksDBSample.java
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@@ -44,6 +44,7 @@ public class RocksDBSample {
.setBlockSize(64 * SizeUnit.KB)
.setMaxBackgroundCompactions(10)
.setFilter(filter)
.setCacheNumShardBits(6)
.setCompressionType(CompressionType.SNAPPY_COMPRESSION);
Statistics stats = options.statisticsPtr();
@@ -53,6 +54,7 @@ public class RocksDBSample {
assert(options.disableSeekCompaction() == true);
assert(options.blockSize() == 64 * SizeUnit.KB);
assert(options.maxBackgroundCompactions() == 10);
assert(options.cacheNumShardBits() == 6);
assert(options.compressionType() == CompressionType.SNAPPY_COMPRESSION);
assert(options.memTableFactoryName().equals("SkipListFactory"));