Caizhi Weng created FLINK-19990:
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Summary: MultipleInputNodeCreationProcessor#isChainableSource
should consider DataStreamScanProvider
Key: FLINK-19990
URL: https://issues.apache.org/jira/browse/FLINK-19990
Project: Flink
Issue Type: Bug
Reporter: Caizhi Weng
{{MultipleInputNodeCreationProcessor#isChainableSource}} now only considers
{{SourceProvider}}. However {{DataStreamScanProvider}} providing
{{DataStream}}s with {{SourceTransformation}} are also chainable sources, and
we need to take them into consideration.
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