zacharymorn commented on code in PR #790:
URL: https://github.com/apache/lucene/pull/790#discussion_r844733404
##########
lucene/core/src/java/org/apache/lucene/search/UsageTrackingQueryCachingPolicy.java:
##########
@@ -58,12 +58,6 @@ private static boolean shouldNeverCache(Query query) {
return true;
}
- if (query instanceof DocValuesFieldExistsQuery) {
- // We do not bother caching DocValuesFieldExistsQuery queries since they
are already plenty
- // fast.
- return true;
- }
Review Comment:
Oh sorry I should have added a nocommit for this. Given `FieldExistsQuery`
now supports norms and vectors in addition to doc values, would not caching for
also norms and vectors here hurt performance, if we were to have similar
instance of check for `FieldExistsQuery`? I'm also wondering if there's a
luceneutil like benchmark for these as well?
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