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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:
-------------------------------------------

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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