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https://issues.apache.org/jira/browse/HBASE-7093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13498264#comment-13498264
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Varun Sharma commented on HBASE-7093:
-------------------------------------
Good catch - I will fix that part - anything else that might seem structurally
wrong with the patch (it somewhat changes the RowProcessor interface) - I can
fix this and also add tests in a subsequent patch
> Couple Increments/Appends with Put/Delete(s)
> --------------------------------------------
>
> Key: HBASE-7093
> URL: https://issues.apache.org/jira/browse/HBASE-7093
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 0.96.0
> Reporter: Varun Sharma
> Assignee: Varun Sharma
> Attachments: 7093-v1.txt
>
>
> See related issue - https://issues.apache.org/jira/browse/HBASE-4583
> Currently, we cannot bundle increment/append with put/delete operations. The
> above JIRA MVCC'izes the increment/append operations.
> One issue is that increment(s)/append(s) are not idempotent and hence
> repeating the transaction has an associated issue of leading to incorrect
> value/append results. This could be solved by passing additional tokens as
> part of the append(s).
> One possible high level approach could be:
> 1) Class IncrementMutation which inherits from Increment and Mutation
> 2) In the mutateRow call, we add a case for "IncrementMutation" object
> 3) Factor out the code wrapped inside the "lock and MVCC" from increment()
> function to internalIncrement.
> 4) Call internalIncrement from mutateRow and increment()
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