rxin commented on a change in pull request #24110: [SPARK-25341][Core] Support
rolling back a shuffle map stage and re-generate the shuffle files
URL: https://github.com/apache/spark/pull/24110#discussion_r273324907
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File path: core/src/main/scala/org/apache/spark/storage/BlockId.scala
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@@ -98,14 +128,18 @@ private[spark] case class TestBlockId(id: String) extends
BlockId {
@DeveloperApi
class UnrecognizedBlockId(name: String)
- extends SparkException(s"Failed to parse $name into a block ID")
+ extends SparkException(s"Failed to parse $name into a block ID")
@DeveloperApi
object BlockId {
val RDD = "rdd_([0-9]+)_([0-9]+)".r
val SHUFFLE = "shuffle_([0-9]+)_([0-9]+)_([0-9]+)".r
val SHUFFLE_DATA = "shuffle_([0-9]+)_([0-9]+)_([0-9]+).data".r
val SHUFFLE_INDEX = "shuffle_([0-9]+)_([0-9]+)_([0-9]+).index".r
+ // the extend shuffle/data/index is only used when INDETERMINATE stage rerun
+ val EXTEND_SHUFFLE = "shuffle_([0-9]+)_([0-9]+)_([0-9]+)_([0-9]+)".r
Review comment:
please comment and explain what EXTEND_SHUFFLE means.
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