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https://issues.apache.org/jira/browse/HBASE-9899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15413571#comment-15413571
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stack commented on HBASE-9899:
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Pushed the addendum. Thanks [~zghaobac] for keeping an eye on my commits.
> for idempotent operation dups, return the result instead of throwing conflict
> exception
> ---------------------------------------------------------------------------------------
>
> Key: HBASE-9899
> URL: https://issues.apache.org/jira/browse/HBASE-9899
> Project: HBase
> Issue Type: Improvement
> Reporter: Sergey Shelukhin
> Assignee: Guanghao Zhang
> Fix For: 2.0.0, 1.3.0, 1.4.0
>
> Attachments: HBASE-9899-addendum.patch, HBASE-9899-branch-1.patch,
> HBASE-9899-branch-1.patch, HBASE-9899-branch-1.patch, HBASE-9899-v1.patch,
> HBASE-9899-v2.patch, HBASE-9899-v3.patch, HBASE-9899-v3.patch,
> HBASE-9899-v4.patch, HBASE-9899-v4.patch
>
>
> After HBASE-3787, we could store mvcc in operation context, and use it to
> convert the modification request into read on dups instead of throwing
> OperationConflictException.
> MVCC tracking will have to be aware of such MVCC numbers present. Given that
> scanners are usually relatively short-lived, that would prevent low watermark
> from advancing for quite a bit more time
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