Roni Burd created YARN-6350:
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Summary: Add JMX counters to track locality matching (node, rack,
off_switch)
Key: YARN-6350
URL: https://issues.apache.org/jira/browse/YARN-6350
Project: Hadoop YARN
Issue Type: Improvement
Components: metrics, yarn
Reporter: Roni Burd
Priority: Minor
When using realxLocality=true, it would be nice to have metrics to see how well
the RM is fulfilling the requests. This helps to tune the relaxLocality params
and compare the behavior.
The proposal is to have 3 metrics exposed via JMX
-node matching %
-rack matching %
-off_switch matching %
Each one represents the matching that occurred compared to the total matched
asked.
The metrics would have to take into account the type of request (e.g node, ANY,
etc)
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