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https://issues.apache.org/jira/browse/HDFS-11715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15987872#comment-15987872
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Chen Liang commented on HDFS-11715:
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Thanks [~anu] for filing this, a very interesting idea!
A side note though, what if we do want to delete first to, say, make some space
for replicate? and will the delete be starved forever if there is replicate
consistently coming (may not be a practical scenario though). My concern is
just that the actual algorithm that prioritize things properly can be very
tricky.
> Ozone: SCM : Add priority for datanode commands
> -----------------------------------------------
>
> Key: HDFS-11715
> URL: https://issues.apache.org/jira/browse/HDFS-11715
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ozone
> Reporter: Anu Engineer
> Assignee: Anu Engineer
>
> While reviewing HDFS-11493, [~cheersyang] commented that it would be a good
> idea to support priority for datanode commands send from SCM.
> bq. The queue seems to be time ordered, I think it will be better to support
> priority as well. Commands may have different priority, for example,
> replicate a container priority is usually higher than delete a container
> replica; replicate a container also may have different priorities according
> to the number of replicas
> This jira tracks that work item.
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