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https://issues.apache.org/jira/browse/SOLR-5071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13718187#comment-13718187
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Daniel Collins commented on SOLR-5071:
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I suspect the response to this will be you are doing something unsupported. To
do this properly, you should UNLOAD the old core, and (re-)CREATE it as a new
core, that would keep ZK in sync. ZK has no knowledge of what you've done in
the solr.xml file, so it can't possibly know what's going on.
In addition, this syntax of solr.xml is deprecated as of Solr 4.4 so the whole
issue would only affect versions up to Solr 4.3.1. From Solr 4.4 onwards,
solr.xml won't have any of this information, it will be in the core.properties
file for each core. I'm not sure what happens if you change that file by hand,
but I suspect that may to be an "unsupported" action.
> Solrcloud change core to another shard issue
> --------------------------------------------
>
> Key: SOLR-5071
> URL: https://issues.apache.org/jira/browse/SOLR-5071
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Reporter: Illu Y Ying
> Attachments: 2013-7-24 11-55-45.png
>
>
> I have a solrcloud cluster with one collection and two shards.
> One core is a replica for shard1, I stop it and change its solr.xml like this:
> <core name="collection1" instanceDir="collection1" shard="shard2"/>
> So this core should be a shard2 replica, Then I restart it, open cloud graph
> page(see attachment), you can see this core as a down replica still in shard1
> and also as a active replica in shard2.
> There is doubt about one core status in two shards.
> In this one core has two status scenario I suggest that if we could remove
> the down replica information of other shard in clusterStatus.json.
> I remember when core is changing to active status, it will send overseer an
> active status message, so add this logic to overseer change core to active
> status part.
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