On 22/11/16 15:34, Prateek Jain J wrote: > I am not sure but I heard this in one of discussions, that you cant migrate > directly from solr 4 to solr 6. It has to be incremental like solr 4 to solr > 5 and then to solr 6. I might be wrong but is worth trying.
Ideally the index needs to be upgraded using the IndexUpgrader. Something like this should do the trick: java -cp lucene-core-6.0.0.jar:lucene-backward-codecs-6.0.0.jar org.apache.lucene.index.IndexUpgrader /path/to/index - Bram
