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https://issues.apache.org/jira/browse/SOLR-3418?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexandre Rafalovitch closed SOLR-3418.
---------------------------------------
    Resolution: Cannot Reproduce

Asymptomatic bug against old alpha version. A new issue can be created if it 
happens again in the latest version.

> Sometimes data is not replicated to replica slices which are added to a 
> SolrCloud cluster which runs without replica
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-3418
>                 URL: https://issues.apache.org/jira/browse/SOLR-3418
>             Project: Solr
>          Issue Type: Bug
>          Components: replication (java)
>    Affects Versions: 4.0-ALPHA
>         Environment: Linux 2.6.32-29-server #58-Ubuntu SMP Fri Feb 11 
> 21:06:51 UTC 2011 x86_64 GNU/Linux, Solr snapshot from 29th of February 2012, 
> 2 Solr machines with 1 slice each and 0 replica
>            Reporter: Jens Bo Rasmussen
>            Priority: Minor
>              Labels: replica
>             Fix For: 6.0, 4.9
>
>   Original Estimate: 120h
>  Remaining Estimate: 120h
>
> Scenario: ensure that replica slices specified in the configuration are added 
> on sequential node restart without loosing data
> Given a SolrCloud cluster is running with
> number of servers (Solr nodes): 2
> number of slices per node: 1
> number of replica per slice: 0
> number of documents in leader slice on first Solr node: 4
> number of documents in leader slice on second Solr node: 1
> When I configure each node with 1 replica per slice
> And I restart the nodes one at a time
> Then I would expect that the SolrCloud cluster is running with
> number of servers (Solr nodes): 2
> number of slices per node: 1
> number of replica per slice: 1
> number of documents in leader slice on first Solr node: 4
> number of documents in replica slice on second Solr node: 4
> number of documents in leader slice on first Solr node: 1
> number of documents in replica slice on second Solr node: 1
> Testresult: the scenario has been performed several times with success 
> however sometimes data is not replicated; it has been observed that sometimes 
> no data is replicated at all and sometimes only data from one of the slices 
> is replicated



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