Add list initialCapacity in FirstPassGroupingCollector#getTopGroups. (#14777)

vsop-479 · web-flow · commit 77f0d1f6d676 · 2025-06-28T01:02:32.000-07:00
diff --git a/lucene/grouping/src/java/org/apache/lucene/search/grouping/FirstPassGroupingCollector.java b/lucene/grouping/src/java/org/apache/lucene/search/grouping/FirstPassGroupingCollector.java
@@ -131,7 +131,7 @@ public Collection<SearchGroup<T>> getTopGroups(int groupOffset) throws IOExcepti
       buildSortedSet();
     }
 
-    final Collection<SearchGroup<T>> result = new ArrayList<>();
+    final Collection<SearchGroup<T>> result = new ArrayList<>(orderedGroups.size() - groupOffset);
     int upto = 0;
     final int sortFieldCount = comparators.length;
     for (CollectedSearchGroup<T> group : orderedGroups) {

Original file line number	Diff line number	Diff line change
`@@ -131,7 +131,7 @@ public Collection<SearchGroup<T>> getTopGroups(int groupOffset) throws IOExcepti`
`131`	`131`	`buildSortedSet();`
`132`	`132`	`}`
`133`	`133`
`134`		`- final Collection<SearchGroup<T>> result = new ArrayList<>();`
	`134`	`+ final Collection<SearchGroup<T>> result = new ArrayList<>(orderedGroups.size() - groupOffset);`
`135`	`135`	`int upto = 0;`
`136`	`136`	`final int sortFieldCount = comparators.length;`
`137`	`137`	`for (CollectedSearchGroup<T> group : orderedGroups) {`