cloud-fan commented on a change in pull request #25600: [SPARK-11150][SQL]
Dynamic Partition Pruning
URL: https://github.com/apache/spark/pull/25600#discussion_r320627067
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/HashJoin.scala
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@@ -263,4 +263,24 @@ object HashJoin {
}
keyExpr :: Nil
}
+
+ /**
+ * Extract a given key which was previously packed in a long value using its
index to
+ * determine the number of bits to shift
+ */
+ def writeKeyExprAt(keys: Seq[Expression], index: Int): Expression = {
Review comment:
shall we name it `extractKeyExpr`?
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