shenyu0127 commented on code in PR #11249:
URL: https://github.com/apache/pinot/pull/11249#discussion_r1282511755
##########
pinot-core/src/main/java/org/apache/pinot/core/operator/dociditerators/ExpressionScanDocIdIterator.java:
##########
@@ -148,8 +149,18 @@ private void processProjectionBlock(ProjectionBlock
projectionBlock, BitmapDataP
TransformResultMetadata resultMetadata =
_transformFunction.getResultMetadata();
if (resultMetadata.isSingleValue()) {
_numEntriesScanned += numDocs;
- boolean predicateEvaluationResult = _predicateEvaluationResult ==
PredicateEvaluationResult.TRUE;
RoaringBitmap nullBitmap = null;
+ if (_predicateEvaluationResult == PredicateEvaluationResult.NULL) {
+ nullBitmap = _transformFunction.getNullBitmap(projectionBlock);
+ if (nullBitmap != null) {
+ for (int i : nullBitmap) {
+ matchingDocIds.add(_docIdBuffer[i]);
Review Comment:
Done.
##########
pinot-core/src/main/java/org/apache/pinot/core/operator/dociditerators/ExpressionScanDocIdIterator.java:
##########
@@ -315,6 +326,10 @@ private void processProjectionBlock(ProjectionBlock
projectionBlock, BitmapDataP
}
} else {
// TODO(https://github.com/apache/pinot/issues/10882): support NULL for
multi-value.
+ if (_nullHandlingEnabled || _predicateEvaluationResult ==
PredicateEvaluationResult.NULL) {
+ throw new UnsupportedOperationException("NULL handling is not
supported for multi-value");
Review Comment:
Good point.
Modified the code to not throw an exception when null handling is enabled,
and to return empty matching document IDs when `_predicateEvaluationResult ==
PredicateEvaluationResult.NULL`. Also added unit tests for those two scenarios.
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