Hi, We upgraded from Solr version 4.4 to 4.8. In doing so we also upgraded from JDK 1.6 to 1.7. After few days of testing, we decided to move back to 4.4. We get following error in all nodes and our cloud is not usable. How do we fix it?
Format version is not supported (resource: MMapIndexInput(path="/local/data/solr1/index.20140324041707963/segments.gen")): -3 (needs to be between -2 and -2) We tried to switch back to 4.8 but get same error. Any help is highly appreciated. Thanks!
