Zhu Zhu created FLINK-12131:
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Summary: Resetting ExecutionVertex in region failover may cause
inconsistency of IntermediateResult status
Key: FLINK-12131
URL: https://issues.apache.org/jira/browse/FLINK-12131
Project: Flink
Issue Type: Bug
Components: Runtime / Coordination
Affects Versions: 1.9.0
Reporter: Zhu Zhu
Assignee: Zhu Zhu
Currently the *IntermediateResult* status is only reset when its producer
*ExecutionJobVertex* is reset.
When region failover strategy is enabled, the failed region vertices are reset
through *ExecutionVertex.resetForNewExecution()*. The
*numberOfRunningProducers* counter in
IntermediateResult, however, is not properly adjusted in this case.
So if a FINISHED vertex is restarted and finishes again, the counter may drop
below 0.
Besides, the consumable property of the partition is not reset as well. This
may lead to incorrect input state check result for lazy scheduling.
I'd propose to invoke *IntermediateResultPartition.resetForNewExecution()* in
*ExecutionVertex.resetForNewExecution()* and reset the
*numberOfRunningProducers* counter and *IntermediateResultPartition* there.
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