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From "Alan Woodward (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-4478) Allow cores to specify a named config set in non-SolrCloud mode
Date Tue, 14 Jan 2014 22:11:27 GMT

    [ https://issues.apache.org/jira/browse/SOLR-4478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13871271#comment-13871271
] 

Alan Woodward commented on SOLR-4478:
-------------------------------------

@erickerickson do you have any comments on the latest patch?  I'd like to add some initial
tests for the SnapPuller, but because this does everything via the SolrResourceLoader I think
replication should just work.

This should also make writing tests a lot easier, as you can just point to a configset rather
than having to copy files around when spinning up test cores.

> Allow cores to specify a named config set in non-SolrCloud mode
> ---------------------------------------------------------------
>
>                 Key: SOLR-4478
>                 URL: https://issues.apache.org/jira/browse/SOLR-4478
>             Project: Solr
>          Issue Type: Improvement
>    Affects Versions: 4.2, 5.0
>            Reporter: Erick Erickson
>         Attachments: SOLR-4478-take2.patch, SOLR-4478.patch, SOLR-4478.patch
>
>
> Part of moving forward to "the new way", after SOLR-4196 etc... I propose an additional
parameter specified on the <core> node in solr.xml or as a parameter in the "discovery"
mode core.properties file, call it configSet, where the value provided is a path to a directory,
either absolute or relative. Really, this is as though you copied the conf directory somewhere
to be used by more than one core.
> Straw-man: There will be a directory <solr_home>/configsets which will be the default.
If the configSet parameter is, say, "myconf", then I'd expect a directory named "myconf" to
exist in <solr_home>/configsets, which would look something like
> <solr_home>/configsets/myconf/schema.xml
>                               solrconfig.xml
>                               stopwords.txt
>                               velocity
>                               velocity/query.vm
> etc.
> If multiple cores used the same configSet, schema, solrconfig etc. would all be shared
(i.e. shareSchema="true" would be assumed). I don't see a good use-case for _not_ sharing
schemas, so I don't propose to allow this to be turned off. Hmmm, what if shareSchema is explicitly
set to false in the solr.xml or properties file? I'd guess it should be honored but maybe
log a warning?
> Mostly I'm putting this up for comments. I know that there are already thoughts about
how this all should work floating around, so before I start any work on this I thought I'd
at least get an idea of whether this is the way people are thinking about going.
> Configset can be either a relative or absolute path, if relative it's assumed to be relative
to <solr_home>.
> Thoughts?



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