Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/4412#discussion_r24316626
--- Diff: core/src/main/scala/org/apache/spark/SparkEnv.scala ---
@@ -93,6 +93,19 @@ class SparkEnv (
// actorSystem.awaitTermination()
// Note that blockTransferService is stopped by BlockManager since it
is started by it.
+
+ // If we only stop sc, but the driver process still run as a services
then we need to delete
+ // the tmp dir, if not, it will create too many tmp dirs.
+ // We only need to delete the tmp dir create by driver, because
sparkFilesDir is point to the
+ // current working dir in executor which we do not need to delete.
+ if (SparkContext.DRIVER_IDENTIFIER == executorId) {
--- End diff --
I think you just need to store one more member, which is a reference to the
tmp dir if it was created. See above. That's pretty much fool-proof and doesn't
require any new params anywhere.
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