Github user hvanhovell commented on a diff in the pull request:
https://github.com/apache/spark/pull/18301#discussion_r122114390
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/HashedRelation.scala
---
@@ -573,8 +586,11 @@ private[execution] final class LongToUnsafeRowMap(val
mm: TaskMemoryManager, cap
private def updateIndex(key: Long, address: Long): Unit = {
var pos = firstSlot(key)
assert(numKeys < array.length / 2)
+ numKeyLookups += 1
--- End diff --
you should also add this code to the het and the getValue methods.
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