Piotr Nowojski created FLINK-8984:
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Summary: Disabling credit based flow control deadlocks Flink on
checkpoint
Key: FLINK-8984
URL: https://issues.apache.org/jira/browse/FLINK-8984
Project: Flink
Issue Type: Bug
Components: Network
Affects Versions: 1.5.0
Reporter: Piotr Nowojski
Assignee: Piotr Nowojski
Fix For: 1.5.0
This is configuration issue. There are two options:
taskmanager.network.credit-based-flow-control.enabled
and
taskmanager.exactly-once.blocking.data.enabled
If we disable first one, but remain default value for the second one deadlocks
will occur. I think we can safely drop the second config value altogether and
always use blocking BarrierBuffer for credit based flow control and spilling
BarrierBuffer for non credit based flow control.
cc [~zjwang]
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