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From "Kai Zheng (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 03:50:39 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9635?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15097541#comment-15097541
] 

Kai Zheng commented on HDFS-9635:
---------------------------------

Just in case it can help, regarding volume choosing policy with multiple storage types, there
are some optimizations in HDFS-9608. Wonder if we could consolidate all these inputs, thoughts
and effort together to come up a comprehensive policy allowing kinds of configuring and tuning.
After all, having a few of such policies in the list, users may be hard to choose.

> 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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