[jira] [Created] (FLINK-19756) Use multi-input optimization by default

[Shang Yuanchun (Jira)]

Caizhi Weng created FLINK-19756:
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             Summary: Use multi-input optimization by default
                 Key: FLINK-19756
                 URL: https://issues.apache.org/jira/browse/FLINK-19756
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / Planner
            Reporter: Caizhi Weng
             Fix For: 1.12.0


After the multiple input operator is introduced we should use this optimization by default. This will affect a large amount of plan tests so we will do this in an independent subtask.



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