Upgrade solr 4.10 index to solr 5.5

Question

I am trying to upgrade a current solr 4.10.4 setup to solr 5.5.5. Does anyone knows how do I upgrade the index?

Answer 1

You can run the IndexUpgrader tool. More details here:

https://lucene.apache.org/core/5_5_0/core/org/apache/lucene/index/IndexUpgrader.html

And in the migration doc:

https://lucene.apache.org/core/5_5_0/MIGRATE.html