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Hudson commented on HBASE-19506: -------------------------------- FAILURE: Integrated in Jenkins build HBase-Trunk_matrix #4623 (See [https://builds.apache.org/job/HBase-Trunk_matrix/4623/]) HBASE-19506: The CellChunkMap index chunks are usually small, so in (anastas: rev 92d04d57516391376d34aaca6307e5906ffa4ae8) * (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestMemStoreLAB.java * (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/Chunk.java * (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/ImmutableMemStoreLAB.java * (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompactingMemStore.java * (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStoreLABImpl.java * (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/ChunkCreator.java * (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStoreLAB.java * (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestMemStoreChunkPool.java * (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestMemstoreLABWithoutPool.java * (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/CellChunkMap.java * (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/CellChunkImmutableSegment.java > Support variable sized chunks from ChunkCreator > ----------------------------------------------- > > Key: HBASE-19506 > URL: https://issues.apache.org/jira/browse/HBASE-19506 > Project: HBase > Issue Type: Sub-task > Reporter: Anastasia Braginsky > Priority: Major > Attachments: HBASE-19506-V01.patch, HBASE-19506-V02.patch, > HBASE-19506-V03.patch, HBASE-19506-V04.patch, HBASE-19506-V05.patch, > HBASE-19506-V06.patch, HBASE-19506-V07.patch, HBASE-19506-V08.patch, > HBASE-19506-V09.patch > > > When CellChunkMap is created it allocates a special index chunk (or chunks) > where array of cell-representations is stored. When the number of > cell-representations is small, it is preferable to allocate a chunk smaller > than a default value which is 2MB. > On the other hand, those "non-standard size" chunks can not be used in pool. > On-demand allocations in off-heap are costly. So this JIRA is about to > investigate the trade of between memory usage and the final performance. -- This message was sent by Atlassian JIRA (v7.6.3#76005)