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https://issues.apache.org/jira/browse/HDFS-9264?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lei (Eddy) Xu updated HDFS-9264:
--------------------------------
       Resolution: Fixed
    Fix Version/s: 2.8.0
                   3.0.0
           Status: Resolved  (was: Patch Available)

Thanks a lot for working on this, [~walter.k.su]

{{TestReplaceDatanodeOnFailure}} test failure is due to HDFS-6101, thus is not 
relevant. Committed to {{trunk}} and {{branch-2}}.

> Minor cleanup of operations on FsVolumeList#volumes
> ---------------------------------------------------
>
>                 Key: HDFS-9264
>                 URL: https://issues.apache.org/jira/browse/HDFS-9264
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Walter Su
>            Assignee: Walter Su
>            Priority: Minor
>             Fix For: 3.0.0, 2.8.0
>
>         Attachments: HDFS-9264.01.patch, HDFS-9264.02.patch
>
>
> We can use {{CopyOnWriteArrayList}} to simplify the operations on 
> {{FsVolumeList#volumes}}



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