[jira] [Commented] (SOLR-9533) Reload core config when a core is reloaded

["Joel Bernstein (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-9533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15592047#comment-15592047 ] 

Joel Bernstein commented on SOLR-9533:
--------------------------------------

I've been reviewing the code around the core reload and it looks like the easiest approach to loading the properties would be the following:

1) In the SolrCore.reload method create a new CoreDescriptor from the old CoreDescriptor. We can do this easily because there is a constructor in the CoreDescriptor already that takes an existing CoreDescriptor and deep clones it.

2) Then call CoreDescriptor.loadExtraProperties before passing it to the constructor of the new core.

I'll put a patch together for this. I'll also investigate the existing test cases for a core reload and see how easy it is to test the properties reload.



> Reload core config when a core is reloaded
> ------------------------------------------
>
>                 Key: SOLR-9533
>                 URL: https://issues.apache.org/jira/browse/SOLR-9533
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>    Affects Versions: 6.2
>            Reporter: Gethin James
>            Assignee: Joel Bernstein
>
> I am reloading a core using {{coreContainer.reload(coreName)}}.  However it doesn't seem to reload the configuration.  I have changed solrcore.properties on the file system but the change doesn't get picked up.
> The coreContainer.reload method seems to call:
> {code}
> CoreDescriptor cd = core.getCoreDescriptor();
> {code}
> I can't see a way to reload CoreDescriptor, so it isn't picking up my changes.  It simply reuses the existing CoreDescriptor.



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