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https://issues.apache.org/jira/browse/HBASE-1784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12746298#action_12746298
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Jean-Daniel Cryans commented on HBASE-1784:
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Testing this issue is not as easy as I thought it was. I was doing randomWrites
and not sequentialWrites... that's very different, with the random one you
don't write as many rows. So I never really "lost" thoses rows, they were never
written.
But there seems to be something in Mathias's case, Ryan also got this issue as
he told me during the hackathon.
> Missing rows after medium intensity insert
> ------------------------------------------
>
> Key: HBASE-1784
> URL: https://issues.apache.org/jira/browse/HBASE-1784
> Project: Hadoop HBase
> Issue Type: Bug
> Affects Versions: 0.20.0
> Reporter: Jean-Daniel Cryans
> Priority: Blocker
>
> This bug was uncovered by Mathias in his mail "Issue on data load with
> 0.20.0-rc2". Basically, somehow, after a medium intensity insert a lot of
> rows goes missing. Easy way to reproduce : PE. Doing a PE scan or randomRead
> afterwards won't uncover anything since it doesn't bother about null rows.
> Simply do a count in the shell, easy to test (I changed my scanner caching in
> the shell to do it faster).
> I tested some light insertions with force flush/compact/split in the shell
> and it doesn't break.
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