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From "Guanghao Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9899) for idempotent operation dups, return the result instead of throwing conflict exception
Date Wed, 27 Jul 2016 11:59:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15395517#comment-15395517
] 

Guanghao Zhang commented on HBASE-9899:
---------------------------------------

[~enis] Did you still work on this? If not, I can take this issue.

> 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: Enis Soztutar
>
> 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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