[jira] [Commented] (SOLR-6980) Collection deletion, creation and shared configsets

["Erick Erickson (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-6980?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15050013#comment-15050013 ] 

Erick Erickson commented on SOLR-6980:
--------------------------------------

I think these two are a bit related at least.

I'm not sure I agree with this totally, I think there are two cases:

1> we upload a configset as part of collection creation, but creation fails. Then it seems like we should surely remove the configset.

2> we just delete a collection and no other collection references it. In this case I think it would be bad to delete the configset, even if it's not associated with any other collection. Think of a user who deletes a collection as part of their experimentation. Or to delete all the docs and start over. Or is just testing the collection create/delete commands. 

So barring a collection creation error, I think it's an invalid assumption that just because a collection is deleted and no other collection references it, it's not wanted.


> Collection deletion, creation and shared configsets
> ---------------------------------------------------
>
>                 Key: SOLR-6980
>                 URL: https://issues.apache.org/jira/browse/SOLR-6980
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Grant Ingersoll
>
> If a configset is not being shared and a collection is deleted, I think we should also delete the configset, or at least the copy of it for that collection. 
> You can see the ill effects of this by doing:
> # create a data-driven schema collection
> # index some content to it, thus materializing an actual schema
> # delete the collection
> # create a new collection w/ the same name
> # observe that the new collection has the old materialized schema



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