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I am trying to upgrade the Solr version from 5.4.1 to 8.11.2. I had installed solr 5.4.1 on my production server which consists of a lot of data which takes a lot of time to reindex data for solr 8.11.2. I have tried the IndexUpgrader tool but it's not working because I am upgrading Solr between two major versions(not consecutive). Is there any faster way to upgrade the solr version from 5.4.1 to 8.11.2 without affecting my production?

Could you help me please?

Thank you!

Jaivik Patel
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  • You can use the different indexupgraders to go through each version. There's a helpful script located at https://github.com/cominvent/solr-tools/tree/master/upgradeindex that Jan made that tries to do this automagically for you. – MatsLindh Oct 10 '22 at 19:46
  • In Jan script he mentioned that we can upgrade index up to 6.x version and that indexes used by solr 6.x and solr 7.x but I have to upgrade my solr to 8.x version so is it working for 8.x version? – Jaivik Patel Oct 14 '22 at 03:49
  • You'll run the index upgrader from 5 to 6, from 6 to 7 and then from 7 to 8. You might have to update the script to support 7 as well, but the process should be similar to what you can find there. – MatsLindh Oct 14 '22 at 13:30
  • Yes I have run index upgrader from 5 to 6,from 6 to 7. But when I had run index upgrade from 7 to 8 it gives error that The index was initially created with 6.x version. – Jaivik Patel Oct 17 '22 at 07:02
  • Hi All! Can someone help me with this problem? Thank you! – Jaivik Patel Nov 01 '22 at 03:35
  • Sorry, but at some time you're probably going to have to bite the reindexing bullet - you might already have been able to reindex in the same since you asked this question. I'm not sure about any magical ways to work around that issue, except for doing the upgrades - and if that fails, I'd probably get ready for reindexing. – MatsLindh Nov 01 '22 at 07:18

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