sigmod commented on a change in pull request #32060:
URL: https://github.com/apache/spark/pull/32060#discussion_r608419354
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/trees/TreeNode.scala
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@@ -90,6 +139,66 @@ abstract class TreeNode[BaseType <: TreeNode[BaseType]]
extends Product {
*/
private val tags: mutable.Map[TreeNodeTag[_], Any] = mutable.Map.empty
+ /**
+ * A bit set of tree patterns for this TreeNode and its subtree. If this
TreeNode node and its
+ * subtree contains a pattern `P`, the corresponding bit for `P.id` is set
in this BitSet.
+ */
+ override lazy val treePatternBits: BitSet = {
+ val bits: BitSet = new BitSet(TreePattern.maxId)
+ // Propagate node pattern bits
+ val nodePatternIterator = nodePatterns.iterator
Review comment:
The same reason as above.
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