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https://issues.apache.org/jira/browse/HDFS-12461?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16167271#comment-16167271
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Weiwei Yang commented on HDFS-12461:
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Hi [~anu]
A quick check, is your data dir configured to respect disk volumes, e.g
/disk1/data, /disk2/data?
> Ozone: Ozone data placement is not even
> ---------------------------------------
>
> Key: HDFS-12461
> URL: https://issues.apache.org/jira/browse/HDFS-12461
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ozone
> Affects Versions: HDFS-7240
> Reporter: Anu Engineer
> Priority: Blocker
> Labels: ozoneMerge
>
> On a machine with 3 data disks, Ozone keeps on picking the same disk to place
> all containers. Looks like we have a bug in the round robin selection of
> disks.
> Steps to Reproduce:
> 1. Install an Ozone cluster.
> 2. Make sure that datanodes have more than one disk.
> 3. Run corona few times, each run creates more containers.
> 4. Login into the data node.
> 5. Run a command like tree or ls -R /data or independently verify each
> location.
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