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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-2105) All appends are serialized in HLog
Date Mon, 11 Jan 2010 18:28:54 GMT
All appends are serialized in HLog

                 Key: HBASE-2105
                 URL: https://issues.apache.org/jira/browse/HBASE-2105
             Project: Hadoop HBase
          Issue Type: Bug
    Affects Versions: 0.20.2
            Reporter: Jean-Daniel Cryans
            Assignee: Jean-Daniel Cryans
            Priority: Blocker
             Fix For: 0.21.0

duiod on IRC was asking about locks on the write path so I reviewed it a bit and saw that
we are very good at not locking except on row level in HRegion and others but in HLog we actually
synchronize everything on updateLock. I'm pretty sure that's not what we want. I guess a RWLock
would be more useful.

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