https://github.com/o19s/solr_dump might help. Also investigate if bin/solr export will work for you.
On Thu, Jul 1, 2021 at 8:48 AM Dominique Bejean <dominique.bej...@eolya.fr> wrote: > 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 > > >
