srowen commented on a change in pull request #26728: [SPARK-30012][CORE][SQL]
Change classes extending scala collection classes to work with 2.13
URL: https://github.com/apache/spark/pull/26728#discussion_r352364977
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File path:
core/src/main/scala/org/apache/spark/util/collection/ExternalAppendOnlyMap.scala
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@@ -367,7 +367,7 @@ class ExternalAppendOnlyMap[K, V, C](
private def removeFromBuffer[T](buffer: ArrayBuffer[T], index: Int): T = {
val elem = buffer(index)
buffer(index) = buffer(buffer.size - 1) // This also works if index ==
buffer.size - 1
- buffer.reduceToSize(buffer.size - 1)
+ buffer.trimEnd(1)
Review comment:
reduceToSize is no longer exposed in 2.13. This should work alike, though
does a little more work than reduceToSize does.
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