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https://issues.apache.org/jira/browse/SOLR-3563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13399507#comment-13399507
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Mark Miller commented on SOLR-3563:
-----------------------------------
I've add this to the work I did on the collections API - it's needed there for
collection removal. Should be committing a first iteration of that soon.
> Collection in ZK not deleted when all shards has been unloaded
> --------------------------------------------------------------
>
> Key: SOLR-3563
> URL: https://issues.apache.org/jira/browse/SOLR-3563
> Project: Solr
> Issue Type: Bug
> Components: multicore, SolrCloud
> Affects Versions: 4.0
> Environment: Same as SOLR-3561
> Reporter: Per Steffensen
> Priority: Minor
> Fix For: 4.0
>
>
> Same scanario as SOLR-3561 - deleting shards/cores using CoreAdmin/UNLOAD
> command.
> I have noticed that when I have done CoreAdmin/UNLOAD for all shard under a
> collection, that the collection and all its slices are still present in ZK
> under /collections. I might be ok since the operation is called UNLOAD, but I
> basically want to delete an entire collection and all data related to it
> (including information about it in ZK).
> A delete-collection operation, that also deletes info about the collection
> under /collections in ZK, would be very nice! Or a delete-shard/core
> operation and then some nice logic that detects when all shards belonging to
> a collection has been deleted, and when that has happened deletes info about
> the collection under /collections in ZK.
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