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https://issues.apache.org/jira/browse/HDFS-17808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18007762#comment-18007762
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ASF GitHub Bot commented on HDFS-17808:
---------------------------------------

hadoop-yetus commented on PR #7810:
URL: https://github.com/apache/hadoop/pull/7810#issuecomment-3083369218

   :broken_heart: **-1 overall**
   
   
   
   
   
   
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[/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs-client.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7810/1/artifact/out/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs-client.txt)
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> EC: End block group in advance to prevent write failure for long-time running 
> OutputStream
> ------------------------------------------------------------------------------------------
>
>                 Key: HDFS-17808
>                 URL: https://issues.apache.org/jira/browse/HDFS-17808
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: ec, erasure-coding
>            Reporter: farmmamba
>            Assignee: farmmamba
>            Priority: Major
>              Labels: pull-request-available
>
> Recently, we met an EC problem in our production.
> User creates an output stream to write ec files.  That output stream writes 
> some bytes and will be idle for a long time until data is ready.  If we 
> restart our cluster's datanodes to version up,  those applications will  
> finally fail due to not have enough healthy streamers.
>  
> This Jira try to solve above problem by end block group in advance when we 
> already have failed streamers but less than parity number.
>  



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