6591812 opened a new pull request, #20072: URL: https://github.com/apache/flink/pull/20072
This a pr based on https://github.com/apache/flink/pull/20054. 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. ## What is the purpose of the change Add ExecutionTimeBasedSlowTaskDetector for detect slow tasks. ## Brief change log Add ExecutionTimeBasedSlowTaskDetector and UT. ## Verifying this change Add ExecutionTimeBasedSlowTaskDetectorTest that validates the logic of ExecutionTimeBasedSlowTaskDetector. ## Does this pull request potentially affect one of the following parts: Dependencies (does it add or upgrade a dependency): no The public API, i.e., is any changed class annotated with @public(Evolving):no The serializers: no The runtime per-record code paths (performance sensitive): no Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no The S3 file system connector: no ## Documentation Does this pull request introduce a new feature? no -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
