[jira] [Created] (FLINK-18906) Support checkpointing with multiple input operator chained with sources

[Shang Yuanchun (Jira)]

Piotr Nowojski created FLINK-18906:
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             Summary: Support checkpointing with multiple input operator chained with sources
                 Key: FLINK-18906
                 URL: https://issues.apache.org/jira/browse/FLINK-18906
             Project: Flink
          Issue Type: Sub-task
          Components: Runtime / Checkpointing, Runtime / Task
            Reporter: Piotr Nowojski
            Assignee: Piotr Nowojski
             Fix For: 1.12.0


Generalize `CheckpointBarrierHandlers` plus hook in sources to `CheckpointBarrierHandlers`.



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