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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-2295) Row locks may deadlock with themselves
Date Fri, 05 Mar 2010 23:33:27 GMT
Row locks may deadlock with themselves
--------------------------------------

                 Key: HBASE-2295
                 URL: https://issues.apache.org/jira/browse/HBASE-2295
             Project: Hadoop HBase
          Issue Type: Bug
          Components: regionserver
            Reporter: Todd Lipcon


Row locks in HRegion are keyed by a int-sized hash of the row key. It's perfectly possible
for two rows to hash to the same key. So, if any client tries to lock both rows, it will deadlock
with itself. Switching to a 64-bit hash is an improvement but still sketchy.

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