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Posted to issues@flink.apache.org by "Zhu Zhu (Jira)" <ji...@apache.org> on 2022/06/20 11:42:00 UTC

[jira] [Created] (FLINK-28136) Implement ExecutionTimeBasedSlowTaskDetector

Zhu Zhu created FLINK-28136:
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             Summary: Implement ExecutionTimeBasedSlowTaskDetector
                 Key: FLINK-28136
                 URL: https://issues.apache.org/jira/browse/FLINK-28136
             Project: Flink
          Issue Type: Sub-task
          Components: Runtime / Coordination
            Reporter: Zhu Zhu
             Fix For: 1.16.0


In the first version of speculative execution, an ExecutionTimeBasedSlowTaskDetector will be used to detect slow tasks. For ExecutionTimeBasedSlowTaskDetector, if a task's execution time is much longer than that of most tasks of the same JobVertex, the task will be identified as slow. More specifically, it will compute an execution time baseline for each JobVertex. Tasks which execute longer than or equals to the baseline will be identified as slow tasks.



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