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From "stack (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4720) Implement atomic update operations (checkAndPut, checkAndDelete) for REST client/server
Date Thu, 22 Dec 2011 15:53:31 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13174856#comment-13174856
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stack commented on HBASE-4720:
------------------------------

@Mubarak Understood (re: formatter).  Would suggest you not run it on total file when changing
a few lines in the file only; we've not been doing a good job enforcing formatting across
the code base so forcing formatting on all of a file will usually turn up loads of changes.
 When loads of changes, your patch gets big.  Big patches are harder to get reviews on.  Just
some advice for next time.

On the test URL making, sounds good.
                
> Implement atomic update operations (checkAndPut, checkAndDelete) for REST client/server

> ----------------------------------------------------------------------------------------
>
>                 Key: HBASE-4720
>                 URL: https://issues.apache.org/jira/browse/HBASE-4720
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Daniel Lord
>            Assignee: Mubarak Seyed
>             Fix For: 0.94.0
>
>         Attachments: HBASE-4720.trunk.v1.patch, HBASE-4720.v1.patch, HBASE-4720.v3.patch
>
>
> I have several large application/HBase clusters where an application node will occasionally
need to talk to HBase from a different cluster.  In order to help ensure some of my consistency
guarantees I have a sentinel table that is updated atomically as users interact with the system.
 This works quite well for the "regular" hbase client but the REST client does not implement
the checkAndPut and checkAndDelete operations.  This exposes the application to some race
conditions that have to be worked around.  It would be ideal if the same checkAndPut/checkAndDelete
operations could be supported by the REST client.

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