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https://issues.apache.org/jira/browse/HDFS-1547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12980987#action_12980987
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Todd Lipcon commented on HDFS-1547:
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I agree the cluster probably won't be in use for such a case. But will the
decommissioning itself actually be able to proceed? ie will the NN be able to
pick new locations for the blocks previously stored on the decomissioning
nodes? Or will we end up in a sort of deadlock situation.
> Improve decommission mechanism
> ------------------------------
>
> Key: HDFS-1547
> URL: https://issues.apache.org/jira/browse/HDFS-1547
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: name-node
> Affects Versions: 0.23.0
> Reporter: Suresh Srinivas
> Assignee: Suresh Srinivas
> Fix For: 0.23.0
>
> Attachments: HDFS-1547.1.patch, HDFS-1547.patch
>
>
> Current decommission mechanism driven using exclude file has several issues.
> This bug proposes some changes in the mechanism for better manageability. See
> the proposal in the next comment for more details.
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