Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/19168#discussion_r141060766
--- Diff:
core/src/main/scala/org/apache/spark/storage/ShuffleBlockFetcherIterator.scala
---
@@ -439,6 +443,8 @@ final class ShuffleBlockFetcherIterator(
fetchRequests += FetchRequest(address, Array((blockId,
size)))
result = null
}
+ bytesInFlight -= size
+ fetchUpToMaxBytes()
--- End diff --
we may throw exception before hitting this branch
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