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https://issues.apache.org/jira/browse/HDFS-15874?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17802409#comment-17802409
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Shilun Fan commented on HDFS-15874:
-----------------------------------
[~zhuqi] We are preparing for the 3.4.0 version release, and I am doing some
preparatory work. For this JIRA, I found that the PR had been closed, so I
changed the status of JIRA to DONE.
> Extend TopMetrics to support callerContext aggregation.
> -------------------------------------------------------
>
> Key: HDFS-15874
> URL: https://issues.apache.org/jira/browse/HDFS-15874
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Qi Zhu
> Assignee: Qi Zhu
> Priority: Major
> Labels: pull-request-available
> Attachments: image-2021-03-05-12-01-16-852.png
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Now top metrics for namenode op is only supported aggregation for user, the
> top user op is useful.
> But actually, the most useful is the callerContext aggregation, we can use
> this to aggregate the running apps in yarn or the scheduling jobs by extend
> the callerContext in such as (oozie or airflow), so that we can get the real
> time top pressure to namenode.
> cc [~weichiu] [~hexiaoqiao] [~ayushtkn] [~shv] [~ferhui]
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