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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11530) Use HDFS specific network topology to choose datanode in BlockPlacementPolicyDefault
Date Thu, 04 May 2017 16:55:04 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11530?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15997061#comment-15997061
] 

Arpit Agarwal commented on HDFS-11530:
--------------------------------------

+1 for the v15 patch. Thanks for patiently addressing all the feedback [~linyiqun].

I believe [~vagarychen] also contributed some portions of this patch so please consider co-crediting
him in the commit message.

> Use HDFS specific network topology to choose datanode in BlockPlacementPolicyDefault
> ------------------------------------------------------------------------------------
>
>                 Key: HDFS-11530
>                 URL: https://issues.apache.org/jira/browse/HDFS-11530
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>    Affects Versions: 3.0.0-alpha2
>            Reporter: Yiqun Lin
>            Assignee: Yiqun Lin
>         Attachments: HDFS-11530.001.patch, HDFS-11530.002.patch, HDFS-11530.003.patch,
HDFS-11530.004.patch, HDFS-11530.005.patch, HDFS-11530.006.patch, HDFS-11530.007.patch, HDFS-11530.008.patch,
HDFS-11530.009.patch, HDFS-11530.010.patch, HDFS-11530.011.patch, HDFS-11530.012.patch, HDFS-11530.013.patch,
HDFS-11530.014.patch, HDFS-11530.015.patch
>
>
> The work for {{chooseRandomWithStorageType}} has been merged in HDFS-11482. But this
method is contained in new topology {{DFSNetworkTopology}} which is specified for HDFS. We
should update this and let {{BlockPlacementPolicyDefault}} use the new way since the original
way is inefficient.



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