zhuqi created YARN-8995:
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Summary: Log the event type of the too big event queue size, and
add the information to the metrics.
Key: YARN-8995
URL: https://issues.apache.org/jira/browse/YARN-8995
Project: Hadoop YARN
Issue Type: Improvement
Components: metrics, nodemanager, resourcemanager
Affects Versions: 3.1.0
Reporter: zhuqi
Assignee: zhuqi
In our growing cluster，there are unexpected situations that cause some event
queues to block the performance of the cluster, such as the bug of
https://issues.apache.org/jira/browse/YARN-5262 . I think it's necessary to log
the event type of the too big event queue size, and add the information to the
metrics, and the threshold of queue size is a parametor which can be changed.
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