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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11482) Add storage type demand to into DFSNetworkTopology#chooseRandom
Date Tue, 14 Mar 2017 00:32:41 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arpit Agarwal updated HDFS-11482:
---------------------------------
       Resolution: Fixed
     Hadoop Flags: Reviewed
    Fix Version/s: 3.0.0-alpha3
           Status: Resolved  (was: Patch Available)

Thanks [~vagarychen]. I've committed this to trunk.

Thanks [~linyiqun] for the code reviews.

> Add storage type demand to into DFSNetworkTopology#chooseRandom
> ---------------------------------------------------------------
>
>                 Key: HDFS-11482
>                 URL: https://issues.apache.org/jira/browse/HDFS-11482
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>            Reporter: Chen Liang
>            Assignee: Chen Liang
>             Fix For: 3.0.0-alpha3
>
>         Attachments: HDFS-11482.001.patch, HDFS-11482.002.patch, HDFS-11482.003.patch,
HDFS-11482.004.patch, HDFS-11482.005.patch, HDFS-11482.006.patch, HDFS-11482.007.patch, HDFS-11482.008.patch,
HDFS-11482.009.patch, HDFS-11482.010.patch
>
>
> HDFS-11450 adds storage type info into network topology, with on this info we may change
chooseRandom to take storage type requirement as parameter, only checking subtrees required
storage type available. This way we avoid blindly picking up nodes that are not applicable.



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