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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-2105) All appends are serialized in HLog
Date Fri, 22 Jan 2010 17:55:21 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2105?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HBASE-2105:
-------------------------

         Priority: Major  (was: Blocker)
    Fix Version/s:     (was: 0.20.4)
                       (was: 0.21.0)

This is not a blocker, after discussion.  Nor is it to be addressed in 0.20.4.  Moving it
out.

> 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
>
> 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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