cloud-fan commented on a change in pull request #29342:
URL: https://github.com/apache/spark/pull/29342#discussion_r470465338
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/HashedRelation.scala
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@@ -66,6 +66,30 @@ private[execution] sealed trait HashedRelation extends
KnownSizeEstimation {
throw new UnsupportedOperationException
}
+ /**
+ * Returns an iterator for key index and matched rows.
+ *
+ * Returns null if there is no matched rows.
+ */
+ def getWithKeyIndex(key: InternalRow): Iterator[ValueRowWithKeyIndex]
+
+ /**
+ * Returns key index and matched single row.
+ *
+ * Returns null if there is no matched rows.
+ */
+ def getValueWithKeyIndex(key: InternalRow): ValueRowWithKeyIndex
+
+ /**
+ * Returns an iterator for keys index and rows of InternalRow type.
+ */
+ def valuesWithKeyIndex(): Iterator[ValueRowWithKeyIndex]
+
+ /**
+ * Returns the maximum number of allowed keys index.
+ */
+ def maxNumKeysIndex: Int
Review comment:
ditto in https://github.com/apache/spark/pull/29342/files#r470463130
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