Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/12598#discussion_r61914539
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/HashedRelation.scala
---
@@ -324,8 +348,10 @@ private[joins] object UnsafeHashedRelation {
*
* see
http://java-performance.info/implementing-world-fastest-java-int-to-int-hash-map/
*/
-private[execution] final class LongToUnsafeRowMap(var mm:
TaskMemoryManager, capacity: Int)
- extends MemoryConsumer(mm) with Externalizable {
+private[execution] final class LongToUnsafeRowMap(
+ val mm: TaskMemoryManager,
+ capacity: Int)
--- End diff --
this change it not needed
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