chenkovsky commented on issue #824: LUCENE-8755: QuadPrefixTree robustness
URL: https://github.com/apache/lucene-solr/pull/824#issuecomment-519345358
 
 
   @dsmiley for backward compatibility problem, is there something like 
"migration" in lucene?  When I develop web project, I find that migration idea 
benefits me a lot when the schema changes. 
   
   Does the indexed data contain luncene version info which created the index? 
If it contains, We can use old code to search in old indexed data.

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