Zhu Zhu created FLINK-31052:
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Summary: Release Testing: Verify FLINK-30707 Improve slow task
detection
Key: FLINK-31052
URL: https://issues.apache.org/jira/browse/FLINK-31052
Project: Flink
Issue Type: Sub-task
Components: Runtime / Coordination
Reporter: Zhu Zhu
Fix For: 1.17.0
This task aims to verify [FLINK-30707 which improves the slow task
detection|https://issues.apache.org/jira/browse/FLINK-30707].
The slow task detection now takes the input data volume of tasks into account.
Tasks which has a longer execution time but consumes more data may not be
considered as slow. This improvement helps to eliminate the negative impacts of
data skew on slow task detecting.
The documentation of speculative execution can be found
[here|https://nightlies.apache.org/flink/flink-docs-master/docs/deployment/speculative_execution/#speculative-execution]
.
One can verify it by creating intended data skew.
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