jihoonson commented on a change in pull request #10312:
URL: https://github.com/apache/druid/pull/10312#discussion_r475359730
##########
File path:
processing/src/main/java/org/apache/druid/query/filter/InDimFilter.java
##########
@@ -143,10 +142,11 @@ private InDimFilter(
// The values set can be huge. Try to avoid copying the set if possible.
// Note that we may still need to copy values to a list for caching. See
getCacheKey().
- if ((NullHandling.sqlCompatible() ||
values.stream().noneMatch(NullHandling::needsEmptyToNull))) {
+ if (NullHandling.sqlCompatible() || !values.remove("")) {
this.values = values;
} else {
- this.values =
values.stream().map(NullHandling::emptyToNullIfNeeded).collect(Collectors.toSet());
+ values.add(null);
Review comment:
Oh sorry, you're right. I misread the code. It would be nice to add some
comment about what we want to do here since it's not much intuitive.
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