srowen commented on issue #22015: [SPARK-20286][SPARK-24786][Core][DynamicAllocation] Release executors on unpersisting RDD URL: https://github.com/apache/spark/pull/22015#issuecomment-464912450 Oh, the point is rather to more aggressively update expiry time whenever an RDD is unpersisted? I haven't fully understood this change, but it looks like the check is still triggered by executor idle. Is this not also solvable by decreasing the idle time for executors with only cached blocks?
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