Github user JoshRosen commented on a diff in the pull request: https://github.com/apache/spark/pull/3582#discussion_r21352570 --- Diff: core/src/main/scala/org/apache/spark/storage/BlockInfo.scala --- @@ -81,3 +101,45 @@ private object BlockInfo { private val BLOCK_PENDING: Long = -1L private val BLOCK_FAILED: Long = -2L } + +class WaitType(conditions: mutable.HashMap[String, Condition]) extends Enumeration { --- End diff -- I'm having a hard time understanding this class. Can you please add comments to explain it?
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