xuanyuanking commented on a change in pull request #24892: [SPARK-25341][Core]
Support rolling back a shuffle map stage and re-generate the shuffle files
URL: https://github.com/apache/spark/pull/24892#discussion_r297071557
##########
File path:
core/src/main/scala/org/apache/spark/network/BlockTransferService.scala
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@@ -66,6 +66,7 @@ abstract class BlockTransferService extends ShuffleClient
with Closeable with Lo
host: String,
port: Int,
execId: String,
+ shuffleGenerationId: Int,
Review comment:
Add more comment in fetchBlockSync in 2362512.
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