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https://issues.apache.org/jira/browse/HBASE-2105?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Kyle Purtell closed HBASE-2105.
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> All appends are serialized in HLog
> ----------------------------------
>
> Key: HBASE-2105
> URL: https://issues.apache.org/jira/browse/HBASE-2105
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.20.2
> Reporter: Jean-Daniel Cryans
> Assignee: Jean-Daniel Cryans
> Priority: Major
>
> 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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