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From "Jonathan Gray (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-2459) Use finer-grain locking in HConnectionManager
Date Fri, 16 Apr 2010 18:16:25 GMT
Use finer-grain locking in HConnectionManager
---------------------------------------------

                 Key: HBASE-2459
                 URL: https://issues.apache.org/jira/browse/HBASE-2459
             Project: Hadoop HBase
          Issue Type: Improvement
          Components: client
            Reporter: Jonathan Gray
            Priority: Critical
             Fix For: 0.20.5, 0.21.0


Currently we synchronize within HConnectionManager.locateRegionInMeta() when looking up the
cached location (and querying meta if not cached).  We use the same lock for every user-space
region.

We really only need per-region synchronization here.

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