Github user jiangxb1987 commented on a diff in the pull request: https://github.com/apache/spark/pull/20292#discussion_r163149829 --- Diff: core/src/main/scala/org/apache/spark/util/collection/ExternalAppendOnlyMap.scala --- @@ -547,9 +555,9 @@ class ExternalAppendOnlyMap[K, V, C]( private def cleanup() { batchIndex = batchOffsets.length // Prevent reading any other batch val ds = deserializeStream --- End diff -- The new val is not actually needed.
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