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https://issues.apache.org/jira/browse/SOLR-4312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13557361#comment-13557361
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Mark Miller commented on SOLR-4312:
-----------------------------------
I think that points out a change we should probably make - we should not re
guess the address on every startup - we should guess it once and keep using
that unless someone then overrides it? Or sets a flag to force a re guess?
> 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: Steve Rowe
>
> Upgrading from one SolrCloud version to another needs to be figured out and
> documented.
> Mark Miller wrote on the 4.1 VOTE email on [email protected]:
> {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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