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Posted to dev@hbase.apache.org by "Elliott Clark (JIRA)" <ji...@apache.org> on 2015/12/03 11:04:11 UTC

[jira] [Created] (HBASE-14922) Delayed flush doesn't work causing flush storms.

Elliott Clark created HBASE-14922:
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             Summary: Delayed flush doesn't work causing flush storms.
                 Key: HBASE-14922
                 URL: https://issues.apache.org/jira/browse/HBASE-14922
             Project: HBase
          Issue Type: Bug
            Reporter: Elliott Clark
            Assignee: Elliott Clark


Starting all regionservers at the same time will mean that most PeriodicMemstoreFlusher's will be running at the same time. So all of these threads will queue flushes at about the same time.

This was supposed to be mitigated by Delayed. However that isn't used at all. This results in the immediate filling up and then draining of the flush queues every hour.



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