cloud-fan commented on issue #19832: [SPARK-22628][CORE]Some situations， the assignment of executors on workers is not what we expected when `spark.deploy.spreadOut=true`. URL: https://github.com/apache/spark/pull/19832#issuecomment-532083727 > After a moment,if some apps release cores, and workB has 3 core left, workC has 2 core left, we should assign one executor on workC,not workB. Why? Because we can't put executors belong to the same application to the same worker?
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