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https://issues.apache.org/jira/browse/HBASE-8580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13662483#comment-13662483
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Sergey Shelukhin commented on HBASE-8580:
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Interesting... RSes crashing, or you mean data nodes crashing?
                
> Ensure that there are 3 replicas when Flushing or Compacting
> ------------------------------------------------------------
>
>                 Key: HBASE-8580
>                 URL: https://issues.apache.org/jira/browse/HBASE-8580
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Elliott Clark
>
> It is possible that datanodes in a DFS pipeline can be dropped.  When this 
> happens it possible for there to be fewer than the number of replicas 
> expected.  After a close on the file the namenode tries to re-replicate the 
> file. On flush and compaction we should block waiting for the number of 
> datanodes reporting that they have the needed blocks to be 3.

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