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From "Chen Liang (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HDFS-11482) Add storage type demand to into DFSNetworkTopology#chooseRandom
Date Tue, 14 Mar 2017 00:19:41 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15923296#comment-15923296
] 

Chen Liang edited comment on HDFS-11482 at 3/14/17 12:19 AM:
-------------------------------------------------------------

Thanks [~arpitagarwal] for the comments on the compilation errors, and the failed tests are
indeed unrelated, and they passed in my local runs.


was (Author: vagarychen):
Thanks [~arpitagarwal] for the verification on the compilation errors! And the failed tests
are indeed unrelated, and they passed in my local runs.

> 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
>         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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