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From "Erick Erickson (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (SOLR-7316) API to create a core is broken
Date Tue, 21 Nov 2017 22:13:00 GMT

    [ https://issues.apache.org/jira/browse/SOLR-7316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16261577#comment-16261577
] 

Erick Erickson edited comment on SOLR-7316 at 11/21/17 10:12 PM:
-----------------------------------------------------------------

No, nor is there any consensus on what should be done. For SolrCloud, the process has been
resolved for creating _collections_, but for stand-alone Solr you have to put the configurations
"in the right place" to create a core with the core admin API.

For that matter, the create core API has never been broken, it's worked as expected. The question
is whether that expectation should be changed.



was (Author: erickerickson):
No, nor is there any consensus on what should be done. For SolrCloud, the process has been
resolved for creating _collections_, but for stand-alone Solr you have to put the configurations
"in the right place" to create a core with the core admin API.



> API to create a core is broken
> ------------------------------
>
>                 Key: SOLR-7316
>                 URL: https://issues.apache.org/jira/browse/SOLR-7316
>             Project: Solr
>          Issue Type: Bug
>          Components: Server
>    Affects Versions: 5.0
>            Reporter: Mark Haase
>
> *Steps To Reproduce*
> {code}
> curl 'http://localhost:8983/solr/admin/cores?action=CREATE&name=new_core&instanceDir=new_core'
> {code}
> *Expected Result*
> Create a core called "new_core".
> *Actual Result*
> {quote}
> Error CREATEing SolrCore 'new_core': Unable to create core [new_core] Caused by: Can't
find resource 'solrconfig.xml' in classpath or '/var/solr/data/new_core/conf'
> {quote}
> Somebody on solr-users tells me:
> {quote}
> The CoreAdmin API requires that the instanceDir already exist, with a
> conf directory inside it that contains solrconfig.xml, schema.xml, and
> any other necessary config files.
> {quote}
> Huh? Where is this magical knowledge mentioned in the [API documentation|https://cwiki.apache.org/confluence/display/solr/CoreAdmin+API]?
> Another user on the list serve says:
> {quote}
> In fact, yes. The thing to remember here is that you're using a much
> older approach that had its roots in the pre-cloud days.
> {quote}
> *The whole point of creating APIs is to abstract out details that the caller doesn't
need to know, and yet this API requires an understanding of Solr's internal file structure
and history of the project?* I'm speechless.



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