Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/4984#discussion_r33714930
--- Diff:
core/src/main/scala/org/apache/spark/storage/DiskBlockManager.scala ---
@@ -124,10 +124,16 @@ private[spark] class DiskBlockManager(blockManager:
BlockManager, conf: SparkCon
(blockId, getFile(blockId))
}
+ /**
+ * Create local directories for storing block data. These directories are
+ * located inside configured local directories and won't
+ * be deleted on JVM exit when using the external shuffle service.
--- End diff --
I'm pretty confused. When external shuffle service is enabled, the
executors already do not clean up the shuffle files when the JVM exits.
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