Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/5672#discussion_r29076110
--- Diff:
core/src/main/scala/org/apache/spark/storage/DiskBlockManager.scala ---
@@ -148,7 +148,11 @@ private[spark] class DiskBlockManager(blockManager:
BlockManager, conf: SparkCon
/** Cleanup local dirs and stop shuffle sender. */
private[spark] def stop() {
// Remove the shutdown hook. It causes memory leaks if we leave it
around.
- Utils.removeShutdownHook(shutdownHook)
+ try {
+ Utils.removeShutdownHook(shutdownHook)
--- End diff --
Hmm. It should be ok to allow removing the hooks during shutdown.
`SparkShutdownHookManager.runAll` is safe against modifications to the
underlying queue.
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