clintropolis commented on a change in pull request #8822: optimize numeric
column null value checking for low filter selectivity (more rows)
URL: https://github.com/apache/incubator-druid/pull/8822#discussion_r343339776
##########
File path:
processing/src/main/java/org/apache/druid/segment/vector/VectorSelectorUtils.java
##########
@@ -47,14 +47,38 @@
retVal = new boolean[offset.getMaxVectorSize()];
}
- // Probably not super efficient to call "get" so much, but, no worse than
the non-vectorized version.
+ int nextNullRow = nullIterator.next();
if (offset.isContiguous()) {
+ final int startOffset = offset.getStartOffset();
+ nullIterator.advanceIfNeeded(startOffset);
Review comment:
No, this is a mistake, I will fix (and make sure there is test coverage
because this looks wrong).
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