richardstartin commented on a change in pull request #8138:
URL: https://github.com/apache/pinot/pull/8138#discussion_r800106191
##########
File path:
pinot-core/src/main/java/org/apache/pinot/core/operator/transform/function/CaseTransformFunction.java
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@@ -185,21 +188,29 @@ public TransformResultMetadata getResultMetadata() {
* index(1 to N) of matched WHEN clause, 0 means nothing matched, so go to
ELSE.
*/
private int[] getSelectedArray(ProjectionBlock projectionBlock) {
- if (_selectedResults == null) {
- _selectedResults = new int[DocIdSetPlanNode.MAX_DOC_PER_CALL];
+ int numDocs = projectionBlock.getNumDocs();
+ if (_selectedResults == null || _selectedResults.length < numDocs) {
+ _selectedResults = new int[numDocs];
} else {
- Arrays.fill(_selectedResults, 0);
+ Arrays.fill(_selectedResults, 0, numDocs, 0);
+ Arrays.fill(_selections, false);
}
int numWhenStatements = _whenStatements.size();
- for (int i = 0; i < numWhenStatements; i++) {
+ for (int i = numWhenStatements - 1; i >= 0; i--) {
Review comment:
Allows branch-free setting of the highest priority case below (note that
the statement numbers increase)
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