John Leach created HBASE-14540:
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             Summary: Write Ahead Log Batching Optimization
                 Key: HBASE-14540
                 URL: https://issues.apache.org/jira/browse/HBASE-14540
             Project: HBase
          Issue Type: Improvement
            Reporter: John Leach


The new write ahead log mechanism seems to batch too few mutations when running 
inside the disruptor.  As we scaled our load up (many threads with small 
writes), we saw the number of hdfs sync operations grow in concert with the 
number of writes.  Generally, one would expect the size of the batches to grow 
but the number of actual sync operations to settle. 



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