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https://issues.apache.org/jira/browse/SOLR-17574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17902582#comment-17902582
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David Smiley commented on SOLR-17574:
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Even though this is a public method on ClusterState; I think we can simply
remove it without back-compat. It's only there to serve AllowListUrlChecker.
> ClusterState getHostAllowList isn't always updated when live nodes change
> -------------------------------------------------------------------------
>
> Key: SOLR-17574
> URL: https://issues.apache.org/jira/browse/SOLR-17574
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Affects Versions: 8.8.2
> Reporter: David Smiley
> Priority: Major
> Labels: pull-request-available
> Time Spent: 50m
> Remaining Estimate: 0h
>
> ClusterState.getHostAllowList was introduced in SOLR-15217 to validate a host
> may be reached for distributed-search. But it's a cached value computed from
> the live nodes, and the live nodes may change. Thus it can happen that a new
> live node arrives, gets replicas, and suddenly, distributed-search fails with
> a 403 ("Forbidden"), with an error string containing this substring: "is
> neither a live node of the cluster nor in the configured".
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