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From "Mark Miller (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-3397) Insure that Replication and Solr Cloud are compatible
Date Mon, 23 Apr 2012 12:41:35 GMT

    [ https://issues.apache.org/jira/browse/SOLR-3397?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13259574#comment-13259574
] 

Mark Miller commented on SOLR-3397:
-----------------------------------

bq. Since SolrCloud takes this functionality over completely, it seems like replication needs
to be made smart enough to disable itself if running under SolrCloud.

SolrCloud does not take this functionality over - it uses it. The example replication handler
given in the example solrconfig.xml is sufficient. Some other config might make sense (say
you want to enable basic auth or compression), while others should be left alone - eg you
don't want to configure a node as a slave most likely.

SolrCloud takes advantage of the existing replication functionality and pass parameters about
who to poll from and when - you can't disable it - we might just do some conf checks and print
warnings and or fail depending on config that is found - but in some cases their might be
legit reasons to alter config in ways we don't anticipate depending on what you might be trying
to setup.
                
> Insure that Replication and Solr Cloud are compatible
> -----------------------------------------------------
>
>                 Key: SOLR-3397
>                 URL: https://issues.apache.org/jira/browse/SOLR-3397
>             Project: Solr
>          Issue Type: Improvement
>          Components: replication (java), SolrCloud
>    Affects Versions: 4.0
>            Reporter: Erick Erickson
>
> There has been at least one report of an early-adopter having replication (as in master/slave)
configured with SolrCloud and having very odd results. Experienced Solr users could reasonably
try this (or just have their configurations from 3.x Solr installations hanging around). Since
SolrCloud takes this functionality over completely, it seems like replication needs to be
made smart enough to disable itself if running under SolrCloud.

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