Stephan Ewen created FLINK-4809:
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Summary: Operators should tolerate checkpoint failures
Key: FLINK-4809
URL: https://issues.apache.org/jira/browse/FLINK-4809
Project: Flink
Issue Type: Sub-task
Components: State Backends, Checkpointing
Reporter: Stephan Ewen
Fix For: 1.2.0
Operators should try/catch exceptions in the synchronous and asynchronous part
of the checkpoint and send a {{DeclineCheckpoint}} message as a result.
The decline message should have the failure cause attached to it.
The checkpoint barrier should be sent anyways as a first step before attempting
to make a state checkpoint, to make sure that downstream operators do not block
in alignment.
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