On 9/23/2014 8:40 AM, Nitin Agarwal wrote: > Hi, we are planning for a Solr Cloud upgrade from 4.7.1 to 4.10. I have > identified the following steps for the upgrade > > 1. Update solrconfig.xml to be compliant with 4.10. > 2. Update the required jar files and war files from Solr 4.10 distribution. > 3. Verified we are using Java 1.7. > > Now comes the question of data - index, do I need to recreate the indexes > from scratch, basically trunk and load or is there some other way to > upgrade the indexes?
All Solr 4.x versions will read the index from previous 4.x and 3.x versions. It is recommended that you completely reindex for any upgrade, but it should not be absolutely necessary. If that doesn't work, it's either a bug or a result of config/schema changes. Thanks, Shawn
