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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-2405) Close, split, open of regions in RegionServer are run by a single thread only.
Date Fri, 02 Apr 2010 18:48:27 GMT
Close, split, open of regions in RegionServer are run by a single thread only.
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                 Key: HBASE-2405
                 URL: https://issues.apache.org/jira/browse/HBASE-2405
             Project: Hadoop HBase
          Issue Type: Bug
            Reporter: stack
             Fix For: 0.20.4, 0.21.0


JGray and Karthik observed yesterday that a regoin open message arrived at the regionserver
but that the regionserver worker thread did not get around to the actually opening until 45
seconds later (region offline for 45 seconds).  We only run a single Worker thread in a regoinserver
processing open, close, and splits.  In this case, a long running close (or two) held up the
worker thread.  We need to run more than a single worker.  A pool of workers?  Should opens
be prioritized?

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