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https://issues.apache.org/jira/browse/SOLR-5135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13736374#comment-13736374
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Mark Miller commented on SOLR-5135:
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bq. or create the collection again due
Seems you can actually create it again - we check existence vs the
clusterstate.json rather than the /collections node - we should still remove
the remnants though.
> Deleting a collection should be extra aggressive in the face of failures.
> -------------------------------------------------------------------------
>
> Key: SOLR-5135
> URL: https://issues.apache.org/jira/browse/SOLR-5135
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Reporter: Mark Miller
> Assignee: Mark Miller
> Fix For: 4.5, 5.0
>
>
> Until Zk is the source of truth for the cluster, zk and local node states can
> get out of whack in certain situations - as a result, sometimes you cannot
> clean out all of the remnants of a collection to recreate it. For example, if
> the collection is listed in zk under /collections, but is not in
> clusterstate.json, you cannot remove or create the collection again due to a
> early exception in the collection removal chain.
> I think we should probably still return the error - but also delete as much
> as we can.
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