cloud-fan commented on a change in pull request #29276:
URL: https://github.com/apache/spark/pull/29276#discussion_r462466131



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File path: core/src/main/scala/org/apache/spark/scheduler/TaskSetManager.scala
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@@ -690,12 +691,13 @@ private[spark] class TaskSetManager(
   }
 
   /**
-   * Check whether has enough quota to fetch the result with `size` bytes
+   * Check whether has enough quota to fetch the result with `size` bytes.
+   * This check does not apply to shuffle map tasks as they return map status 
and metrics updates.

Review comment:
       `..., which will not be held by the driver and will be thrown away when 
the driver finishes processing it.`




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