Github user nongli commented on a diff in the pull request:
https://github.com/apache/spark/pull/11130#discussion_r52399113
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/HashJoin.scala ---
@@ -165,4 +183,73 @@ trait HashJoin {
}
}
}
+
+ @transient protected[this] lazy val EMPTY_LIST =
CompactBuffer[InternalRow]()
+
+ @transient private[this] lazy val leftNullRow = new
GenericInternalRow(left.output.length)
+ @transient private[this] lazy val rightNullRow = new
GenericInternalRow(right.output.length)
+
+ protected[this] def leftOuterIterator(
+ key: InternalRow,
+ joinedRow: JoinedRow,
+ rightIter: Iterable[InternalRow],
+ resultProjection: InternalRow => InternalRow,
+ numOutputRows: LongSQLMetric): Iterator[InternalRow] = {
+ val ret: Iterable[InternalRow] = {
+ if (!key.anyNull) {
--- End diff --
indenting
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