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Posted to dev@lucene.apache.org by "Erick Erickson (JIRA)" <ji...@apache.org> on 2014/09/30 22:20:38 UTC
[jira] [Updated] (SOLR-6517) CollectionsAPI call
ELECTPREFERREDLEADERS
[ https://issues.apache.org/jira/browse/SOLR-6517?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Erick Erickson updated SOLR-6517:
---------------------------------
Summary: CollectionsAPI call ELECTPREFERREDLEADERS (was: CollectionsAPI call REELECTLEADERS)
> CollectionsAPI call ELECTPREFERREDLEADERS
> -----------------------------------------
>
> Key: SOLR-6517
> URL: https://issues.apache.org/jira/browse/SOLR-6517
> Project: Solr
> Issue Type: New Feature
> Affects Versions: 5.0, Trunk
> Reporter: Erick Erickson
> Assignee: Erick Erickson
>
> Perhaps the final piece of SOLR-6491. Once the preferred leadership roles are assigned, there has to be a command "make it so Mr. Solr". This is something of a placeholder to collect ideas. One wouldn't want to flood the system with hundreds of re-assignments at once. Should this be synchronous or asnych? Should it make the best attempt but not worry about perfection? Should it???
> a collection=name parameter would be required and it would re-elect all the leaders that were on the 'wrong' node
> I'm thinking an optionally allowing one to specify a shard in the case where you wanted to make a very specific change. Note that there's no need to specify a particular replica, since there should be only a single preferredLeader per slice.
> This command would do nothing to any slice that did not have a replica with a preferredLeader role. Likewise it would do nothing if the slice in question already had the leader role assigned to the node with the preferredLeader role.
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