Qi Zhu created HDFS-15874:
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Summary: Extend TopMetrics to support callerContext aggregation.
Key: HDFS-15874
URL: https://issues.apache.org/jira/browse/HDFS-15874
Project: Hadoop HDFS
Issue Type: New Feature
Reporter: Qi Zhu
Assignee: Qi Zhu
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]
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