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https://issues.apache.org/jira/browse/HDFS-11847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16328942#comment-16328942
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Jason Lowe commented on HDFS-11847:
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I recently noticed the new {{branch-3}} branch and tracked it back to here.
branch-3.0 is for tracking 3.0.x releases, currently 3.0.1-SNAPSHOT. Was the
creation of {{branch-3}} intentional, and if so, how is it different than
branch-3.0?
> Enhance dfsadmin listOpenFiles command to list files blocking datanode
> decommissioning
> --------------------------------------------------------------------------------------
>
> Key: HDFS-11847
> URL: https://issues.apache.org/jira/browse/HDFS-11847
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs
> Affects Versions: 3.0.0-alpha1
> Reporter: Manoj Govindassamy
> Assignee: Manoj Govindassamy
> Priority: Major
> Fix For: 3.1.0, 3.0.1
>
> Attachments: HDFS-11847.01.patch, HDFS-11847.02.patch,
> HDFS-11847.03.patch, HDFS-11847.04.patch, HDFS-11847.05.patch
>
>
> HDFS-10480 adds {{listOpenFiles}} option is to {{dfsadmin}} command to list
> all the open files in the system.
> Additionally, it would be very useful to only list open files that are
> blocking the DataNode decommissioning. With thousand+ node clusters, where
> there might be machines added and removed regularly for maintenance, any
> option to monitor and debug decommissioning status is very helpful. Proposal
> here is to add suboptions to {{listOpenFiles}} for the above case.
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