[GitHub] [lucene-solr] romseygeek commented on a change in pull request #2212: LUCENE-9669: Add an expert API to allow opening indices created < N-1

[GitBox <gi...@apache.org>]

romseygeek commented on a change in pull request #2212:
URL: https://github.com/apache/lucene-solr/pull/2212#discussion_r559604398



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File path: lucene/core/src/java/org/apache/lucene/index/DirectoryReader.java
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@@ -104,6 +104,23 @@ public static DirectoryReader open(final IndexCommit commit) throws IOException
     return StandardDirectoryReader.open(commit.getDirectory(), commit);
   }
 
+  /**
+   * Expert: returns an IndexReader reading the index in the given {@link IndexCommit}. This method
+   * allows to open indices that were created wih a Lucene version older than N-1 provided that all
+   * all codecs for this index are available in the classpath and the segment file format used was
+   * created with Lucene 7 or older. Users of this API must be aware that Lucene doesn't guarantee

Review comment:
       The javadoc should read 'Lucene 7 or newer' I think?




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