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https://issues.apache.org/jira/browse/HADOOP-4701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12649872#action_12649872
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Raghu Angadi commented on HADOOP-4701:
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> 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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