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From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4701) Improve datanode decommission monitoring performance
Date Sat, 22 Nov 2008 01:10:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12649872#action_12649872
] 

Raghu Angadi commented on HADOOP-4701:
--------------------------------------

> You are saying there will be no decommissioned replicas and therefore all this code should
be revised.
Nope. There is some misunderstanding. What I am proposing is that once a block is replicated
it will be deleted from decommissioned datanode. No code related to NumReplicas or other replica
related logic needs to change.

> Improve datanode decommission monitoring performance
> ----------------------------------------------------
>
>                 Key: HADOOP-4701
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4701
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: dfs
>            Reporter: Tsz Wo (Nicholas), SZE
>
> The datanode decommission monitoring is not efficient.  There are rooms for improvement.

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