msokolov commented on a change in pull request #2256:
URL: https://github.com/apache/lucene-solr/pull/2256#discussion_r568058172
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File path: lucene/core/src/java/org/apache/lucene/index/IndexWriter.java
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@@ -941,6 +969,11 @@ public IndexWriter(Directory d, IndexWriterConfig conf)
throws IOException {
// obtain the write.lock. If the user configured a timeout,
// we wrap with a sleeper and this might take some time.
writeLock = d.obtainLock(WRITE_LOCK_NAME);
+ if (config.getIndexSort() != null && leafSorter != null) {
+ throw new IllegalArgumentException(
+ "[IndexWriter] can't use index sort and leaf sorter at the same
time!");
Review comment:
I think it's OK - that MultiSorter is sorting (by index sort) documents
in several segments being merged; it will control the order of the documents
within the new segment, but shouldn't have any influence on or conflict with
the order of the segments being merged
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