rmuir commented on a change in pull request #191:
URL: https://github.com/apache/lucene/pull/191#discussion_r660224322
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File path:
lucene/facet/src/test/org/apache/lucene/facet/TestLongValueFacetCounts.java
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@@ -382,19 +383,19 @@ public void testRandomMultiValued() throws Exception {
+ allSingleValued);
}
- long[][] values = new long[valueCount][];
- for (int i = 0; i < valueCount; i++) {
+ Long[][] values = new Long[docCount][];
Review comment:
yes that is mainly it. If the index has tens of millions of documents,
let's avoid creating tens of millions of objects for performance reasons (both
cpu cycles in faceting and also avoiding pressure on the GC system). It is true
in some cases that the c2 compiler can eliminate this when the stars align, but
we should just avoid doing inefficient code and not leave it to chance in such
tight loops.
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