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https://issues.apache.org/jira/browse/HDFS-9551?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Wang resolved HDFS-9551.
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Resolution: Won't Fix
Based on discussion here, I don't want to add the maintenance burden of a new
volume policy unless there are some demonstrated benefits. Thanks for the
interest though!
> 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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