Yun Gao created FLINK-21080:
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Summary: Identify JobVertex containing legacy source operators and
abort checkpoint with legacy source operators partially finished
Key: FLINK-21080
URL: https://issues.apache.org/jira/browse/FLINK-21080
Project: Flink
Issue Type: Sub-task
Reporter: Yun Gao
Most legacy source operators would record the offset for each partitions, and
after recovery it would read from the recorded offset. If before a checkpoint
some subtasks are finished, the corresponding partition offsets would be
deserted in the checkpoint. Then if the job recover with this checkpoint, the
legacy source would re-discovery all the partitions and for those finished
tasks, the legacy source would re-read them since their offsets are not
recorded.
Therefore, we would like to fail the checkpoint if some legacy source operators
have part of subtasks finished.
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