Dave,

On 6/12/22 14:21, Dave wrote:
You don’t need a new core/collection, just reindex everything again. Ideally 
since you’re using standalone (way better than cloud imo) you can use the same 
indexer, just do an integrity check after the fact to make sure the document 
counts are the same. You don’t really need to do that delete if you are just 
going to obliterate the previous install and index

I would expect to use the existing index, not kill everything. Just upgrade the Solr binaries and use the same on-disk artifacts.

Thanks,
-chris

On Jun 12, 2022, at 1:49 PM, Christopher Schultz <ch...@christopherschultz.net> 
wrote:

All,

We've been using the same major version of Solr for years so haven't had to do 
this yet, but we are preparing to upgrade between major versions, now.

After upgrading, I'm assuming that the existing index is "usable" but I've read many 
times that "you should reindex after a major version change."

Okay.

Does that just mean:

1. delete *:*
2. re-add all documents

?

Or do we have to create a new core/collection with the schema from scratch and 
load it?

I'm using standalone Solr (i.e. no ZK) with a single core if that makes any 
difference.

Thanks,
-chris

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