[jira] [Created] (FLINK-18905) Add runtime support for multiple input operator chained with sources

[Shang Yuanchun (Jira)]

Piotr Nowojski created FLINK-18905:
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             Summary: Add runtime support for multiple input operator chained with sources
                 Key: FLINK-18905
                 URL: https://issues.apache.org/jira/browse/FLINK-18905
             Project: Flink
          Issue Type: Sub-task
          Components: Runtime / Task
            Reporter: Piotr Nowojski
            Assignee: Piotr Nowojski
             Fix For: 1.12.0


Raw runtime support, ignoring watermarks, metrics and checkpointing.

Requires rewrite of `OperatorChain` class, dealing with `StreamTask#headOperator` field and generalisation of `StreamMultipleInputProcessor`.



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