leanken commented on a change in pull request #29104:
URL: https://github.com/apache/spark/pull/29104#discussion_r459813091
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/HashedRelation.scala
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@@ -323,11 +374,18 @@ private[joins] object UnsafeHashedRelation {
// Create a mapping of buildKeys -> rows
val keyGenerator = UnsafeProjection.create(key)
var numFields = 0
+ val numKeys = key.length
+ val isOriginalInputEmpty = !input.hasNext
+ var allNullColumnKeyExistsInOriginalInput: Boolean = false
while (input.hasNext) {
val row = input.next().asInstanceOf[UnsafeRow]
numFields = row.numFields()
val key = keyGenerator(row)
- if (!key.anyNull) {
+ if ((0 until numKeys).forall(key.isNullAt)) {
Review comment:
sure
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