liupc commented on a change in pull request #23438: [SPARK-26525]Fast release
ShuffleBlockFetcherIterator on completion of the iteration
URL: https://github.com/apache/spark/pull/23438#discussion_r251234781
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File path:
core/src/main/scala/org/apache/spark/storage/ShuffleBlockFetcherIterator.scala
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@@ -212,6 +214,9 @@ final class ShuffleBlockFetcherIterator(
logWarning("Failed to cleanup shuffle fetch temp file " + file.path())
}
}
+ // Unregister completion callbacks to avoid memory leak for
ShuffleBlockFetcherIterator
+ // contains lots of metadata about MapStatus
+ context.removeTaskCompletionListener(cleanupListener)
Review comment:
@HyukjinKwon got it, Thanks!
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