Sebastian Mattheis created FLINK-26279:
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Summary: Provide mailbox delay metric
Key: FLINK-26279
URL: https://issues.apache.org/jira/browse/FLINK-26279
Project: Flink
Issue Type: New Feature
Components: Runtime / Metrics
Reporter: Sebastian Mattheis
Related to FLINK-25414. In order to better debug Task being blocked in busy
state, we can periodically enqueue a mailbox action and check how long it took
for the task thread to execute such action. We can report this delay as task
thread delay/mailbox delay. Would be helpful for debugging why unaligned
checkpoints are taking so long to trigger/execute.
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