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https://issues.apache.org/jira/browse/HDFS-6774?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14142147#comment-14142147
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Chris Nauroth commented on HDFS-6774:
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I noticed that removing a volume does not release the lock file in the storage
directory. I filed HDFS-7106 to fix this.
> Make FsDataset and DataStore support removing volumes.
> ------------------------------------------------------
>
> Key: HDFS-6774
> URL: https://issues.apache.org/jira/browse/HDFS-6774
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode
> Affects Versions: 2.4.1
> Reporter: Lei (Eddy) Xu
> Assignee: Lei (Eddy) Xu
> Fix For: 2.6.0
>
> Attachments: HDFS-6774.000.patch, HDFS-6774.001.patch,
> HDFS-6774.002.patch
>
>
> Managing volumes on DataNode includes decommissioning an active volume
> without restarting DataNode.
> This task adds support to remove volumes from {{DataStorage}} and
> {{BlockPoolSliceStorage}} dynamically.
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