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From "BELUGA BEHR (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-9551) Random VolumeChoosingPolicy
Date Fri, 11 Dec 2015 23:29:46 GMT

     [ https://issues.apache.org/jira/browse/HDFS-9551?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

BELUGA BEHR updated HDFS-9551:
------------------------------
    Attachment: TestRandomVolumeChoosingPolicy.java
                RandomVolumeChoosingPolicy.java

> Random VolumeChoosingPolicy
> ---------------------------
>
>                 Key: HDFS-9551
>                 URL: https://issues.apache.org/jira/browse/HDFS-9551
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>    Affects Versions: 2.7.1
>            Reporter: BELUGA BEHR
>            Priority: Minor
>         Attachments: RandomVolumeChoosingPolicy.java, TestRandomVolumeChoosingPolicy.java
>
>
> Please find attached a new implementation of VolumeChoosingPolicy.  This implementation
chooses volumes at random to place blocks.  It is thread-safe and un-synchronized so there
is less thread contention.



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