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Posted to dev@hbase.apache.org by "Ashu Pachauri (JIRA)" <ji...@apache.org> on 2016/10/04 02:52:20 UTC

[jira] [Created] (HBASE-16755) Don't flush everything when under global memstore pressure

Ashu Pachauri created HBASE-16755:
-------------------------------------

             Summary: Don't flush everything when under global memstore pressure
                 Key: HBASE-16755
                 URL: https://issues.apache.org/jira/browse/HBASE-16755
             Project: HBase
          Issue Type: Improvement
          Components: regionserver
            Reporter: Ashu Pachauri


When global memstore reaches the low water mark, we pick the best flushable region and flush all column families for it. This is a suboptimal approach in the  sense that it leads to an unnecessarily high file creation rate and IO amplification due to compactions. We should still try to honor the underlying FlushPolicy.



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