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https://issues.apache.org/jira/browse/SOLR-17620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17912669#comment-17912669
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Houston Putman commented on SOLR-17620:
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I'm all for this. A json object with (limited) node info would be great.
> Encode the version of Solr in SolrCloud "liveNode"
> --------------------------------------------------
>
> Key: SOLR-17620
> URL: https://issues.apache.org/jira/browse/SOLR-17620
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud
> Reporter: David Smiley
> Priority: Major
>
> This proposal is for the "live node" (ZkController.createEphemeralLiveNode)
> stored in ZK to have a JSON payload with the SolrVersion and other
> interesting metadata like the node roles. Furthermore, ZkStateReader should
> read this state and provide a method like getLowestSolrVersion().
> This foundational mechanism allows us to evolve SolrCloud safely using an
> in-place rolling upgrade strategy. Features that need to behave differently
> can consult the lowest SolrVersion to react accordingly.
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