msfroh commented on code in PR #12995:
URL: https://github.com/apache/lucene/pull/12995#discussion_r1460625252
##########
lucene/facet/src/java/org/apache/lucene/facet/taxonomy/directory/TaxonomyIndexArrays.java:
##########
@@ -68,25 +94,66 @@ public TaxonomyIndexArrays(IndexReader reader,
TaxonomyIndexArrays copyFrom) thr
// it may be caused if e.g. the taxonomy segments were merged, and so an
updated
// NRT reader was obtained, even though nothing was changed. this is not
very likely
// to happen.
- int[] copyParents = copyFrom.parents();
- this.parents = new int[reader.maxDoc()];
- System.arraycopy(copyParents, 0, parents, 0, copyParents.length);
- initParents(reader, copyParents.length);
-
+ int[][] parentArray = allocateChunkedArray(reader.maxDoc(),
copyFrom.parents.values.length - 1);
+ if (parentArray.length > 0) {
+ copyChunkedArray(copyFrom.parents.values, parentArray);
+ initParents(parentArray, reader, copyFrom.parents.length());
+ }
+ parents = new ChunkedIntArray(parentArray);
if (copyFrom.initializedChildren) {
initChildrenSiblings(copyFrom);
}
}
+ private static int[][] allocateChunkedArray(int size, int startFrom) {
+ if (size == 0) {
+ return new int[0][];
+ }
+ int chunkCount = size >> CHUNK_SIZE_BITS;
+ int fullChunkCount;
+ int lastChunkSize = size & CHUNK_MASK;
+ if (lastChunkSize == 0) {
Review Comment:
Oh, that's much cleaner, thank you!
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