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From "Per Steffensen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-4114) Collection API: Allow multiple shards from one collection on the same Solr server
Date Wed, 12 Dec 2012 10:03:21 GMT

    [ https://issues.apache.org/jira/browse/SOLR-4114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13529791#comment-13529791
] 

Per Steffensen commented on SOLR-4114:
--------------------------------------

bq. Great patch! I just had to make a couple small tweaks to make the policeman happy - added
license files for the test jars, changed the new test to extend LuceneTestCase. Good stuff
found by the long but useful precommit ant target.

Yes, I do not do precommit test before sending a patch. Of course I will do before committing
myself if/when I become committer.

Just out of curiosity, why do tests HAVE to extend LuceneTestCase?

bq. I think that covers all of your points Per - let me know

Checking only on branch_4x, hopeing that you did the "exact" same changes on trunk. Updated
my local checkout of branch_4x, made a check to see if everything seemed to be there. It was.
I am ready to close this ticket.


                
> Collection API: Allow multiple shards from one collection on the same Solr server
> ---------------------------------------------------------------------------------
>
>                 Key: SOLR-4114
>                 URL: https://issues.apache.org/jira/browse/SOLR-4114
>             Project: Solr
>          Issue Type: New Feature
>          Components: multicore, SolrCloud
>    Affects Versions: 4.0
>         Environment: Solr 4.0.0 release
>            Reporter: Per Steffensen
>            Assignee: Mark Miller
>              Labels: collection-api, multicore, shard, shard-allocation
>             Fix For: 4.1, 5.0
>
>         Attachments: SOLR-4114_mocking_OverseerCollectionProcessorTest_branch_4x.patch,
SOLR-4114.patch, SOLR-4114.patch, SOLR-4114.patch, SOLR-4114.patch, SOLR-4114_trunk.patch
>
>
> We should support running multiple shards from one collection on the same Solr server
- the run a collection with 8 shards on a 4 Solr server cluster (each Solr server running
2 shards).
> Performance tests at our side has shown that this is a good idea, and it is also a good
idea for easy elasticity later on - it is much easier to move an entire existing shards from
one Solr server to another one that just joined the cluter than it is to split an exsiting
shard among the Solr that used to run it and the new Solr.
> See dev mailing list discussion "Multiple shards for one collection on the same Solr
server"

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