Zhu Zhu created FLINK-28138:
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Summary: Add metrics for speculative execution
Key: FLINK-28138
URL: https://issues.apache.org/jira/browse/FLINK-28138
Project: Flink
Issue Type: Sub-task
Components: Documentation
Reporter: Zhu Zhu
Fix For: 1.16.0
Following two metrics will be added to expose job problems and show the
effectiveness of speculative execution:
# {*}numSlowExecutionVertices{*}: Number of slow execution vertices at the
moment.
# {*}numEffectiveSpeculativeExecutions{*}: Number of speculative executions
which finish before their corresponding original executions finish.
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