Hi Prashanth, Please consider upgrading JDK to version 11.
If all your fields are stored, maybe you can write a script in order to dump your data to json files and so reindex them in Solr 8. If your indexes were created with Solr 7, you can try the IndexUpgraderTool https://solr.apache.org/guide/8_5/indexupgrader-tool.html. Dominique Le mer. 30 juin 2021 à 05:24, Prash Inc <prash.i...@gmail.com> a écrit : > Hi, > > 1. > I have apache solr 7.7.3 version. > > Want to upgrade to 8.5.2 version > > want to upgrade JDK to version 8 from 6 > > Please advise the steps for the same. > > 2. How to take backup of Solr data? > > 3. How to Export the entire data from version 7.7.3 to csv file ? > > 4. How to import that CSV file to upgraded 8.5.2 version ? > > > Thanks and Regards > Prashanth > +91-9686334920 >
