Ngone51 commented on a change in pull request #31742:
URL: https://github.com/apache/spark/pull/31742#discussion_r592304336
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File path: core/src/main/scala/org/apache/spark/ContextCleaner.scala
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@@ -207,6 +207,29 @@ private[spark] class ContextCleaner(
}
}
+ /**
+ * Cleanup resources on shutdown.
+ *
+ * This is important for resources that don't live in memory, like
checkpoint data,
+ * that outlive the Spark process. The normal cleanup thread in
[[keepCleaning]]
+ * doesn't cleanup things on shutdown because it's interrupted by the
shutdown
+ * process itself.
+ */
+ private def cleanupOnShutdown(): Unit = {
+ referenceBuffer.toArray(Array[CleanupTaskWeakReference]())
+ .foreach { ref =>
+ ref.task match {
+ case CleanCheckpoint(rddId) =>
Review comment:
Shuffle files are handled by `DiskBlockManager`.
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