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Date: Sun, 11 Nov 2012 18:51:12 +0000 (UTC)
From: "Mark Miller (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
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Subject: [jira] [Updated] (SOLR-4055) Remove/Reload the collection has the
 thread safe issue.
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     [ https://issues.apache.org/jira/browse/SOLR-4055?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mark Miller updated SOLR-4055:
------------------------------

    Fix Version/s: 5.0
                   4.1
         Assignee: Mark Miller
    
> Remove/Reload the collection has the thread safe issue.
> -------------------------------------------------------
>
>                 Key: SOLR-4055
>                 URL: https://issues.apache.org/jira/browse/SOLR-4055
>             Project: Solr
>          Issue Type: Bug
>          Components: SolrCloud
>    Affects Versions: 4.0-ALPHA, 4.0-BETA, 4.0
>         Environment: Solr cloud
>            Reporter: Raintung Li
>            Assignee: Mark Miller
>             Fix For: 4.1, 5.0
>
>         Attachments: patch-4055
>
>
> OverseerCollectionProcessor class for collectionCmd method has thread safe issue.
> The major issue is ModifiableSolrParams params instance will deliver into other thread use(HttpShardHandler.submit). Modify parameter will affect the other threads the correct parameter.
> In the method collectionCmd , change the value params.set(CoreAdminParams.CORE, node.getStr(ZkStateReader.CORE_NAME_PROP)); , that occur send the http request thread will get the wrong core name. The result is that can't delete/reload the right core.
> The easy fix is clone the ModifiableSolrParams for every request.

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