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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-12457) Regions in transition for a long time when CLOSE interleaves with a slow compaction
Date Tue, 11 Nov 2014 06:15:33 GMT
Lars Hofhansl created HBASE-12457:
-------------------------------------

             Summary: Regions in transition for a long time when CLOSE interleaves with a
slow compaction
                 Key: HBASE-12457
                 URL: https://issues.apache.org/jira/browse/HBASE-12457
             Project: HBase
          Issue Type: Bug
            Reporter: Lars Hofhansl


Under heave load we have observed regions remaining in transition for 20 minutes when the
master requests a close while a slow compaction is running.

The pattern is always something like this:
# RS starts a compaction
# HM request the region to be closed on this RS
# Compaction is not aborted for another 20 minutes
# The region is in transition and not usable.

In every case I tracked down so far the time between the requested CLOSE and abort of the
compaction is almost exactly 20 minutes, which is suspicious.

Of course part of the issue is having compactions that take over 20 minutes, but maybe we
can do better here.




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