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https://issues.apache.org/jira/browse/HBASE-11945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14129555#comment-14129555
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Tom James commented on HBASE-11945:
-----------------------------------
is it applicable to MR jobs with TableOutputFormat?
Consider we are writing to same rowkey from a lot of map tasks running across
multiple nodes.
Will the behavior be the serial writes?
> Client writes may be reordered under contention
> -----------------------------------------------
>
> Key: HBASE-11945
> URL: https://issues.apache.org/jira/browse/HBASE-11945
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 0.98.6
> Reporter: Todd Lipcon
>
> I haven't seen this bug in practice, but I was thinking about this a bit and
> think there may be a correctness issue with the way that we handle client
> batches which contain multiple operations which touch the same row. The
> client expects that these operations will be performed in the same order they
> were submitted, but under contention I believe they can get arbitrarily
> reordered, leading to incorrect results.
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