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From "Chen Liang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11482) Add storage type demand to into DFSNetworkTopology#chooseRandom
Date Thu, 09 Mar 2017 23:28:38 GMT

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

Chen Liang updated HDFS-11482:
------------------------------
    Attachment: HDFS-11482.008.patch

Thanks [~arpitagarwal] for the comments!

Post v008 patch to remove that method.

> 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-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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