Dawid Wysakowicz created FLINK-25256:
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Summary: Savepoints do not work with ExternallyInducedSources
Key: FLINK-25256
URL: https://issues.apache.org/jira/browse/FLINK-25256
Project: Flink
Issue Type: Bug
Components: Runtime / Checkpointing
Affects Versions: 1.13.3, 1.14.0
Reporter: Dawid Wysakowicz
It is not possible to take a proper savepoint with {{ExternallyInducedSource}}
or {{ExternallyInducedSourceReader}}. The problem is that we're hardcoding
{{CheckpointOptions}} in the {{triggerHook}}.
The outcome of current state is that operators would try to take checkpoints in
the checkpoint location whereas the {{CheckpointCoordinator}} will write
metadata for those states in the savepoint location.
Moreover the situation gets even weirder (I have not checked it entirely), if
we have a mixture of {{ExternallyInducedSource(s)}} and regular sources. In
such a case the location and format at which the state of a particular task is
persisted depends on the order of barriers arrival. If a barrier from a regular
source arrives last the task takes a savepoint, on the other hand if last
barrier is from an externally induced source it will take a checkpoint.
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