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https://issues.apache.org/jira/browse/HDFS-12011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16065098#comment-16065098
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Ravi Prakash commented on HDFS-12011:
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HI Chencan!
Thanks for your contribution. Could you please detail more of your experimental
setup? How many nodes and how many disks? How many clients? What was the
diversity of the clients? How often do volumes with low load change into
volumes with high load?
I feel like we should get more attention on this JIRA if we want to get it in.
> Add a new load balancing volume choosing policy
> ------------------------------------------------
>
> Key: HDFS-12011
> URL: https://issues.apache.org/jira/browse/HDFS-12011
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: chencan
> Assignee: chencan
> Attachments: HADOOP-12011.002.patch, HADOOP-12011.patch
>
>
> There are two types of volume choosing policies when choose a volume
> inner a datanode to write in a datablock : RoundRobinVolumeChoosingPolicy and
> AvailableSpaceVolumeChoosingPolicy.This two policies do not take into account
> the fsvolume's load. We can add a new load balancing volume choosing policy,
> using existing reference in FsVolumeImpl.
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