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