jpountz commented on a change in pull request #939: LUCENE-9003: Compute
numDocs() lazily.
URL: https://github.com/apache/lucene-solr/pull/939#discussion_r333618991
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File path:
lucene/core/src/java/org/apache/lucene/index/BaseCompositeReader.java
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@@ -89,7 +88,6 @@ protected BaseCompositeReader(R[] subReaders) throws
IOException {
this.maxDoc = Math.toIntExact(maxDoc);
starts[subReaders.length] = this.maxDoc;
- this.numDocs = Math.toIntExact(numDocs);
Review comment:
I think it's not necessary on numDocs. By the time we compute numDocs(), we
already checked that maxDoc values summed up to a number that doesn't overflow.
Since numDocs is less than or equal to maxDoc, the sum of numDocs shouldn't
overflow either?
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