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https://issues.apache.org/jira/browse/SOLR-4312?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Pugh resolved SOLR-4312.
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Resolution: Implemented
I believe that this has been completed via our Ref Guide. If there is
something more specific that is needed, and closing this isn't correct, then
please reopen, and let's figure out what we need! I do see a whole set of
folks currently doing their 8.11 to 9.7 upgrades, so if we are missing content,
we should get it in. And when 10 comes out, that will spark another set of
upgrading ;).
> SolrCloud upgrade path
> ----------------------
>
> Key: SOLR-4312
> URL: https://issues.apache.org/jira/browse/SOLR-4312
> Project: Solr
> Issue Type: Task
> Components: SolrCloud
> Affects Versions: 4.0, 4.1
> Reporter: Steven Rowe
> Priority: Major
>
> Upgrading from one SolrCloud version to another needs to be figured out and
> documented.
> Mark Miller wrote on the 4.1 VOTE email on dev@l.a.o:
> {quote}
> One issue that is probably still a problem is that you can't easily upgrade
> form a 4.0 to 4.1 SolrCloud setup in some cases - at least to my knowledge. I
> don't know all the details, but at a minimum, we should probably add an entry
> to changes about what you should do. It may require blowing away your own
> clusterstate.json and re doing your numShards settings, or starting over,
> or…I don't really know. I don't think anyone has tested.
> {quote}
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