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Posted to dev@lucene.apache.org by "Commit Tag Bot (JIRA)" <ji...@apache.org> on 2013/03/22 17:17:19 UTC

[jira] [Commented] (SOLR-4075) Upon removing the last core of a shard, the shard is not removed from the cluster state.

    [ https://issues.apache.org/jira/browse/SOLR-4075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13610536#comment-13610536 ] 

Commit Tag Bot commented on SOLR-4075:
--------------------------------------

[branch_4x commit] Mark Robert Miller
http://svn.apache.org/viewvc?view=revision&revision=1411451

SOLR-4075: A logical shard that has had all of it's SolrCores unloaded should be removed from the cluster state.

                
> Upon removing the last core of a shard, the shard is not removed from the cluster state.
> ----------------------------------------------------------------------------------------
>
>                 Key: SOLR-4075
>                 URL: https://issues.apache.org/jira/browse/SOLR-4075
>             Project: Solr
>          Issue Type: Bug
>          Components: SolrCloud
>    Affects Versions: 4.0
>            Reporter: Gilles Comeau
>            Assignee: Mark Miller
>            Priority: Minor
>              Labels: patch
>             Fix For: 4.1, 5.0
>
>         Attachments: SOLR-4075.patch
>
>
> Simple Repro of this issue: which now I thought was related to the decision made in: https://issues.apache.org/jira/browse/SOLR-3080 but Mark tells me might have been a problem during the zk layout refactoring right before 4.0.
> 1.	Download SOLR 4 production and extract.
> 2.	Replace solr.xml in apache-solr-4.0.0/example/solr/solr.xml with:
> <?xml version="1.0" encoding="UTF-8" ?>
> <solr persistent="true">
>   <cores adminPath="/admin/cores" defaultCoreName="collection1" host="${host:}" hostPort="${jetty.port:}" hostContext="${hostContext:}" zkClientTimeout="${zkClientTimeout:15000}">
>     <core shard="shard1" instanceDir="collection1/" name="collection1" collection="polecat"/>
>     <core shard="shard1" instanceDir="collection2/" name="collection2" collection="polecat"/>
>     <core schema="schema.xml" shard="core3" instanceDir="core3/" name="core3" config="solrconfig.xml" collection="polecat" dataDir="data"/>
>   </cores>
> </solr>
> 3.	Start solr with: java -Dbootstrap_confdir=./solr/collection1/conf -Dcollection.configName=myconf -DzkRun -Dsolrcloud.skip.autorecovery=true  -jar start.jar
> 	(skip.autorecovery is used because the shards don't exist previously)
> Then run this:
> 	Sanity query:  http://localhost:8983/solr/polecat/select?q=*%3A*&wt=xml&distrib=true
> 	Remove the core: http://localhost:8983/solr/admin/cores?action=UNLOAD&core=core3&deleteIndex=true
> 	Error query: http://localhost:8983/solr/polecat/select?q=*%3A*&wt=xml&distrib=true
> And the sanity query, we will receive 0 records, the error query "no servers hosting shard:".   And in the clusterstate.json:  "core3":{"replicas":{}}}}

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