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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17482) mvcc mechanism fails when using mvccPreAssign
Date Sun, 22 Jan 2017 06:22:26 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15833313#comment-15833313
] 

stack commented on HBASE-17482:
-------------------------------

Thank you [~allan163] for your eagle eye and this finding.

> mvcc mechanism fails when using mvccPreAssign
> ---------------------------------------------
>
>                 Key: HBASE-17482
>                 URL: https://issues.apache.org/jira/browse/HBASE-17482
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 2.0..
>            Reporter: Allan Yang
>            Assignee: Allan Yang
>            Priority: Critical
>             Fix For: 2.0.0
>
>         Attachments: HBASE-17482.patch, HBASE-17482.v2.patch, HBASE-17482.v3.patch
>
>
> If mvccPreAssign and ASYNC_WAL is used, then cells may have been commited to memstore
before append thread can stamp seqid to them. The unit test shows everything.



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