vanzin commented on a change in pull request #25620: [SPARK-25341][Core]
Support rolling back a shuffle map stage and re-generate the shuffle files
URL: https://github.com/apache/spark/pull/25620#discussion_r320926212
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File path: core/src/main/scala/org/apache/spark/internal/config/package.scala
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@@ -1047,6 +1047,14 @@ package object config {
.checkValue(v => v > 0, "The value should be a positive integer.")
.createWithDefault(2000)
+ private[spark] val SHUFFLE_USE_OLD_FETCH_PROTOCOL =
Review comment:
What happens if you connect to an old shuffle service without setting this?
Will things just fail (and always fail)?
Probably ok if they do. Although a more user-friendly error, if possible,
might be good.
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