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From "Rakesh R (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8786) Erasure coding: use simple replication for internal blocks on decommissioning datanodes
Date Wed, 09 Mar 2016 19:58:41 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15187807#comment-15187807
] 

Rakesh R commented on HDFS-8786:
--------------------------------

Thanks [~jingzhao] for the great support in resolving this.

> Erasure coding: use simple replication for internal blocks on decommissioning datanodes
> ---------------------------------------------------------------------------------------
>
>                 Key: HDFS-8786
>                 URL: https://issues.apache.org/jira/browse/HDFS-8786
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Zhe Zhang
>            Assignee: Rakesh R
>             Fix For: 3.0.0
>
>         Attachments: HDFS-8786-001.patch, HDFS-8786-002.patch, HDFS-8786-003.patch, HDFS-8786-004.patch,
HDFS-8786-005.patch, HDFS-8786-006.patch, HDFS-8786-draft.patch
>
>
> Per [discussion | https://issues.apache.org/jira/browse/HDFS-8697?focusedCommentId=14609004&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14609004]
under HDFS-8697, it's too expensive to reconstruct block groups for decomm purpose.



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