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From "ChiaPing Tsai (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16801) The Append/Increment may return the data from future
Date Wed, 12 Oct 2016 06:06:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16801?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15567731#comment-15567731
] 

ChiaPing Tsai commented on HBASE-16801:
---------------------------------------

The scenario is extremely rare, but you are right.

I will fix it for master and branch-1.

Thanks for your suggestion.

> The Append/Increment may return the data from future
> ----------------------------------------------------
>
>                 Key: HBASE-16801
>                 URL: https://issues.apache.org/jira/browse/HBASE-16801
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 2.0.0
>            Reporter: ChiaPing Tsai
>            Assignee: ChiaPing Tsai
>            Priority: Critical
>             Fix For: 2.0.0
>
>         Attachments: HBASE-16801.v0.patch
>
>
> OperationContext maintains the mvcc as a static member, so any Append’s and Increment’s
read point will be changed by others. That is, a retrying Append/Increment may “see” the
future data.
> This is a master only issue.



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