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From "Henri Biestro (JIRA)" <>
Subject [jira] Commented: (SOLR-350) Manage Multiple SolrCores
Date Sat, 22 Dec 2007 06:02:43 GMT


Henri Biestro commented on SOLR-350:

On aliases - for completeness - , I had this "nagging" thought I was missing something...
Re-reading Hoss's proposal and crossing that with the 1000 unique names point you made, there
is in any case 1000 unique 'instanceDir' that need to be provided; Hoss proposed to use the
'instanceDir' instead of a name and alias that if I'm not mistaken.
I got side tracked by the fact that the instanceDir could be absolute which would have introduced
a deployment host 'hard' dependency and lost the equivalence.
If we define an 'instanceRoot' (at the multicore level or at the core level) and make the
(core) instanceDir = instanceRoot + '/' + name, the uniqueness of the core name would be put
to its initial intended use (instead of just being a by-product of the alias feature). In
that case, at least one alias is convenient so we can keep the 'url' constant across index
For instance, if you are using svn, you could have you instanceDir/{schema, conf} versioned;
when you have a new revision ready to go, you copy these over using the instanceDir+","+revision-number
and use that as a name (which isn't too bad of a convention).
And then, there are maybe future features that could be added to use aliases for other purpose...
Oh well...

> Manage Multiple SolrCores
> -------------------------
>                 Key: SOLR-350
>                 URL:
>             Project: Solr
>          Issue Type: Improvement
>    Affects Versions: 1.3
>            Reporter: Ryan McKinley
>         Attachments: SOLR-350-MultiCore.patch, SOLR-350-MultiCore.patch, SOLR-350-MultiCore.patch,
SOLR-350-Naming.patch, SOLR-350-Naming.patch, solr-350.patch, solr-350.patch, solr-350.patch,
solr-350.patch, solr-350.patch
> In SOLR-215, we enabled support for more then one SolrCore - but there is no way to use
them yet.
> We need to make some interface to manage, register, modify avaliable SolrCores

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