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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9635) Add one more volume choosing policy with considering volume IO load
Date Thu, 14 Jan 2016 19:56:39 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9635?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15098748#comment-15098748
] 

Andrew Wang commented on HDFS-9635:
-----------------------------------

Thanks for pointing out that JIRA [~drankye], reviewed it. I like the proposal of a comprehensive
choosing policy. As everyone can probably tell, my inclination is to focus our efforts on
the AvailableSpace policy, since it's the most general purpose and IMO would make a good default.

> Add one more volume choosing policy with considering volume IO load
> -------------------------------------------------------------------
>
>                 Key: HDFS-9635
>                 URL: https://issues.apache.org/jira/browse/HDFS-9635
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>            Reporter: Yong Zhang
>            Assignee: Yong Zhang
>
> We have RoundRobinVolumeChoosingPolicy and AvailableSpaceVolumeChoosingPolicy, but both
not consider volume IO load.
> This jira will add a Add one more volume choosing policy base on how many xceiver count
on volume.



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