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From "ryan rawson (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HBASE-2508) Use AtomicInteger for lockIdGenerator in HRegion
Date Sun, 02 May 2010 22:07:56 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2508?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

ryan rawson resolved HBASE-2508.
--------------------------------

    Resolution: Invalid

as per how the JMM does things and the described locking and lack of evidence to why what
we have now is bad, I am closing this. It's really not an issue. 

> Use AtomicInteger for lockIdGenerator in HRegion
> ------------------------------------------------
>
>                 Key: HBASE-2508
>                 URL: https://issues.apache.org/jira/browse/HBASE-2508
>             Project: Hadoop HBase
>          Issue Type: Improvement
>          Components: regionserver
>    Affects Versions: 0.20.3
>            Reporter: Ted Yu
>
> Currently lockIdGenerator is an int. In obtainRowLock(), retry is needed in case of lockId
collisions.
> We can declare lockIdGenerator as AtomicInteger and use incrementAndGet() to get the
next lock Id.

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