venkata91 commented on a change in pull request #33896:
URL: https://github.com/apache/spark/pull/33896#discussion_r741551702
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File path: core/src/main/scala/org/apache/spark/Dependency.scala
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@@ -131,7 +135,7 @@ class ShuffleDependency[K: ClassTag, V: ClassTag, C:
ClassTag](
def shuffleMergeId: Int = _shuffleMergeId
def setMergerLocs(mergerLocs: Seq[BlockManagerId]): Unit = {
- if (mergerLocs != null) {
+ if (mergerLocs != null && mergerLocs.nonEmpty) {
Review comment:
Most likely difference in the code from the internal and the OSS
version. Yes you're right, I don't think we need to check again here for
`nonEmpty`
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