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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