jpountz commented on code in PR #12622:
URL: https://github.com/apache/lucene/pull/12622#discussion_r1402394564
##########
lucene/core/src/java/org/apache/lucene/index/IndexWriter.java:
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@@ -5160,20 +5177,74 @@ public int length() {
}
mergeReaders.add(wrappedReader);
}
+
+ MergeState.DocMap[] reorderDocMaps = null;
+ if (config.getIndexSort() == null) {
+ // Create a merged view of the input segments. This effectively does
the merge.
+ CodecReader mergedView =
SlowCompositeCodecReaderWrapper.wrap(mergeReaders);
+ Sorter.DocMap docMap = merge.reorder(mergedView, directory);
+ if (docMap != null) {
+ reorderDocMaps = new MergeState.DocMap[mergeReaders.size()];
+ int docBase = 0;
+ int i = 0;
+ for (CodecReader reader : mergeReaders) {
+ final int currentDocBase = docBase;
+ reorderDocMaps[i] =
+ new MergeState.DocMap() {
Review Comment:
I'll leave it to you for a follow-up. :)
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