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[SPARK-6891] Fix the bug that ExecutorAllocationManager will request negative number executors #5676

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[SPARK-6891] Fix the bug that ExecutorAllocationManager will request negative number executors #5676

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4 changes: 2 additions & 2 deletions core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -203,8 +203,8 @@ private[spark] class ExecutorAllocationManager(
* The number of executors we would have if the cluster manager were to fulfill all our existing
* requests.
*/
private def targetNumExecutors(): Int =
numExecutorsPending + executorIds.size - executorsPendingToRemove.size
private def targetNumExecutors(): Int = math.max(numExecutorsPending + executorIds.size -
executorsPendingToRemove.size, minNumExecutors)

/**
* The maximum number of executors we would need under the current load to satisfy all running
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