srowen commented on issue #23401: Trigger GC on executor node idle URL: https://github.com/apache/spark/pull/23401#issuecomment-450662180 Please see https://spark.apache.org/contributing.html I don't think we should do this. Forcing a full GC has downsides like clearing weak references that still usefully cache data. GC already triggers in the background when thresholds are reached. Let's not add a second version plus a new flag to tune on top.
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