Stephan Ewen created FLINK-16443:
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Summary: Fix wrong fix for user-code CheckpointExceptions
Key: FLINK-16443
URL: https://issues.apache.org/jira/browse/FLINK-16443
Project: Flink
Issue Type: Bug
Components: Runtime / Checkpointing
Reporter: Stephan Ewen
Fix For: 1.11.0
The problem of having exceptions that are only in the user code classloader was
fixed by proactively serializing them inside the {{CheckpointException}}. That
means all consumers of {{CheckpointException}} now need to be aware of that
and unwrap the serializable exception.
I believe the right way to fix this would have been to use a
SerializedException in the {{DeclineCheckpoint}} message instead, which would
have localized the change to the actual problem: RPC transport.
I would suggest to revert https://github.com/apache/flink/pull/9742 and instead
apply the above described change.
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