[jira] [Created] (FLINK-12361) Remove useless expression from runtime scheduler

[Shang Yuanchun (Jira)]

Liya Fan created FLINK-12361:
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             Summary: Remove useless expression from runtime scheduler
                 Key: FLINK-12361
                 URL: https://issues.apache.org/jira/browse/FLINK-12361
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Operators
            Reporter: Liya Fan
            Assignee: Liya Fan
         Attachments: image-2019-04-29-11-16-13-492.png

In the scheduleTask method of Scheduler class, expression forceExternalLocation is useless, since it always evaluates to false:

 !image-2019-04-29-11-16-13-492.png!

So it can be removed. Moreover, by removing this expression, the code structure can be made much simpler, because there are some branches relying this expression, which can also be removed.



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