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https://issues.apache.org/jira/browse/SOLR-6379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14101179#comment-14101179
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Mark Miller commented on SOLR-6379:
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Hmm...I think this may be a result of how we resolve cores and collections in
urls.
If we ask the control_collection jetty to satisfy a query for collection1, you
can end up with a request to control_collection:port/solr/collection1. That
will first try to find collection1 as a core - which will work because
collection1 is a core that is part of control_collection.
> new replicas seem to be involved in queries before they are ready
> -----------------------------------------------------------------
>
> Key: SOLR-6379
> URL: https://issues.apache.org/jira/browse/SOLR-6379
> Project: Solr
> Issue Type: Bug
> Reporter: Hoss Man
> Assignee: Mark Miller
> Attachments: SOLR-6379.patch
>
>
> spin off of SOLR-2894 where sarowe & miller were getting failures from
> TestCloudPivot that seemed unrelated to any of hte distrib pivot logic itself.
> in particular: adding a call to "waitForThingsToLevelOut" at the start of the
> test, even before indexing any docs, seemed to work around the problem -- but
> even if all replicas aren't yet up when the test starts, we should either get
> a failure when adding docs (ie: no replica hosting the target shard) or
> queries should only be routed to the replicas that are up and fully caught up
> with the rest of the collection.
> (NOTE: we're specifically talking about a situation where the set of docs in
> the collection is static during the query request)
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