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From "HuangTao (Jira)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-14849) Erasure Coding: replicate block infinitely when datanode being decommissioning
Date Thu, 19 Sep 2019 10:19:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-14849?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

HuangTao updated HDFS-14849:
----------------------------
    Description: 
When the datanode keeping in DECOMMISSION_INPROGRESS status, the EC block in that datanode
will be replicated infinitely.

// added 2019/09/19
I reproduced this scenario in a 165 nodes cluster with decommission 100 nodes simultaneously.
 
 !scheduleReconstruction.png! 

 !fsck-file.png! 

  was:
When the datanode keeping in DECOMMISSION_INPROGRESS status, the EC block in that datanode
will be replicated infinitely.




> Erasure Coding: replicate block infinitely when datanode being decommissioning
> ------------------------------------------------------------------------------
>
>                 Key: HDFS-14849
>                 URL: https://issues.apache.org/jira/browse/HDFS-14849
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 3.3.0
>            Reporter: HuangTao
>            Assignee: HuangTao
>            Priority: Major
>              Labels: EC, HDFS, NameNode
>         Attachments: HDFS-14849.001.patch, fsck-file.png, scheduleReconstruction.png
>
>
> When the datanode keeping in DECOMMISSION_INPROGRESS status, the EC block in that datanode
will be replicated infinitely.
> // added 2019/09/19
> I reproduced this scenario in a 165 nodes cluster with decommission 100 nodes simultaneously.
>  
>  !scheduleReconstruction.png! 
>  !fsck-file.png! 



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