Hi, > Currently I am using Lucene 7.3, I want to upgrade to lucene 8.5.1. Should > I do reindexing in this case ?
No, you don't need that. > Can I make use of backward codec jar without a reindex? Yes, just add the JAR file to your classpath and it can read the indexes. Updates written to the index will use the new codecs. To force a full upgrade (rewrite all segments), invoke the IndexUpgrader class either from your code or using the command line. But this is not needed, it just makes sure that you can get rid of the backwards-codecs jar. Uwe --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
