Github user squito commented on a diff in the pull request: https://github.com/apache/spark/pull/6648#discussion_r33705222 --- Diff: core/src/main/scala/org/apache/spark/shuffle/hash/HashShuffleManager.scala --- @@ -50,15 +53,30 @@ private[spark] class HashShuffleManager(conf: SparkConf) extends ShuffleManager } /** Get a writer for a given partition. Called on executors by map tasks. */ - override def getWriter[K, V](handle: ShuffleHandle, mapId: Int, context: TaskContext) - : ShuffleWriter[K, V] = { - new HashShuffleWriter( - shuffleBlockResolver, handle.asInstanceOf[BaseShuffleHandle[K, V, _]], mapId, context) + override def getWriter[K, V]( + handle: ShuffleHandle, + mapId: Int, + stageAttemptId: Int, + context: TaskContext): ShuffleWriter[K, V] = { + addShuffleAttempt(handle.shuffleId, stageAttemptId) + new HashShuffleWriter(shuffleBlockResolver, handle.asInstanceOf[BaseShuffleHandle[K, V, _]], --- End diff -- I added some comments, but I opted against the `getWriterHelper` version b/c of the delegation inside `UnsafeShuffleManager`. I felt like that added enough complexity to making sure you didn't double-register shuffles and cleanup still happened only once in all cases that is out-weighed the benefits. But its not a clear win either way ... I can finish writing up that version if you think its worth comparing them both.
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