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https://issues.apache.org/jira/browse/HBASE-2332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12846255#action_12846255
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Andrew Purtell commented on HBASE-2332:
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Emulation of current row lock API with CAS is fine, but we do need something.
For example today I needed an incrementColumnValue op that always adjusts
timestamp. ICV won't modify timestamps while the value is in memstore. So I
just used a get and put within a rowlock instead.
> Remove client-exposed row locks from region server
> --------------------------------------------------
>
> Key: HBASE-2332
> URL: https://issues.apache.org/jira/browse/HBASE-2332
> Project: Hadoop HBase
> Issue Type: Improvement
> Components: client, regionserver
> Reporter: Todd Lipcon
> Fix For: 0.21.0
>
>
> Discussion in HBASE-2294 has surfaced that the client-exposed row lock
> feature in the HBase API may not be scalable/necessary. Additionally there
> are some benefits we can reap by removing the feature (or pushing it into the
> client).
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