leanken commented on a change in pull request #29104:
URL: https://github.com/apache/spark/pull/29104#discussion_r459795806
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/HashedRelation.scala
##########
@@ -81,6 +81,32 @@ private[execution] sealed trait HashedRelation extends
KnownSizeEstimation {
*/
def asReadOnlyCopy(): HashedRelation
+
+ /**
+ * Normally HashedRelation is built from an Source (input:
Iterator[InternalRow]).
+ * This indicates the origin input is empty.
+ * Note that, the hashed relation can be empty despite the input being not
empty,
+ * since the hashed relation skips over null keys.
+ */
+ var isOriginInputEmpty: Boolean
+ def setOriginInputEmtpy(isOriginInputEmpty: Boolean): HashedRelation = {
+ this.isOriginInputEmpty = isOriginInputEmpty
+ this
+ }
+
+ /**
+ * It's only used in null aware anti join.
+ * This will be set true if Source (input: Iterator[InternalRow]) contains a
key,
+ * which is allNullColumn.
+ */
+ var allNullColumnKeyExistsInOriginInput: Boolean
+ def setAllNullColumnKeyExistsInOriginInput(
+ allNullColumnKeyExistsInOriginInput: Boolean): HashedRelation = {
+ this.allNullColumnKeyExistsInOriginInput =
Review comment:
done
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