[Backport 2.x] Fixed inefficient Stream API call chains ending with count() (#15386)

CHANGELOG.md

@@ -83,6 +83,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Fix multi-search with template doesn't return status code ([#16265](https:/opensearch-project/OpenSearch/pull/16265))
 - [Streaming Indexing] Fix intermittent 'The bulk request must be terminated by a newline [\n]' failures [#16337](https:/opensearch-project/OpenSearch/pull/16337))
 - Fix wrong default value when setting `index.number_of_routing_shards` to null on index creation ([#16331](https:/opensearch-project/OpenSearch/pull/16331))
+- Fix inefficient Stream API call chains ending with count() ([#15386](https:/opensearch-project/OpenSearch/pull/15386))
 
 ### Security
 

modules/percolator/src/main/java/org/opensearch/percolator/QueryAnalyzer.java

@@ -510,19 +510,25 @@ static Result selectBestResult(Result result1, Result result2) {
  }
 
  private static int minTermLength(Set<QueryExtraction> extractions) {
- // In case there are only range extractions, then we return Integer.MIN_VALUE,
- // so that selectBestExtraction(...) we are likely to prefer the extractions that contains at least a single extraction
- if (extractions.stream().filter(queryExtraction -> queryExtraction.term != null).count() == 0
- && extractions.stream().filter(queryExtraction -> queryExtraction.range != null).count() > 0) {
- return Integer.MIN_VALUE;
- }
-
+ boolean hasTerm = false;
+ boolean hasRange = false;
  int min = Integer.MAX_VALUE;
+
  for (QueryExtraction qt : extractions) {
  if (qt.term != null) {
+ hasTerm = true;
  min = Math.min(min, qt.bytes().length);
  }
+ if (qt.range != null) {
+ hasRange = true;
+ }
  }
+
+ // If there are no terms but there are ranges, return Integer.MIN_VALUE
+ if (!hasTerm && hasRange) {
+ return Integer.MIN_VALUE;
+ }
+
  return min;
  }