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https://issues.apache.org/jira/browse/SOLR-4905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14977057#comment-14977057
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Mikhail Khludnev commented on SOLR-4905:
----------------------------------------
Does it?
When I create {{join}} collection with *two shards*, I got
{code}
...
"q": "{!join from=manu_id_s to=id fromIndex=join}name:one",
...
},
"error": {
"msg": "SolrCloud join: multiple shards not yet supported join",
"code": 400
}
{code}
The purpose of this jira SOLR-4905 was to allow it for fully replicated
(collocated) *single shard* collection.
> Allow fromIndex parameter to JoinQParserPlugin to refer to a single-sharded
> collection that has a replica on all nodes
> ----------------------------------------------------------------------------------------------------------------------
>
> Key: SOLR-4905
> URL: https://issues.apache.org/jira/browse/SOLR-4905
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud
> Reporter: Philip K. Warren
> Assignee: Timothy Potter
> Fix For: 5.1, Trunk
>
> Attachments: SOLR-4905.patch, SOLR-4905.patch, patch.txt
>
>
> Using a non-SolrCloud setup, it is possible to perform cross core joins
> (http://wiki.apache.org/solr/Join). When testing with SolrCloud, however,
> neither the collection name, alias name (we have created aliases to SolrCloud
> collections), or the automatically generated core name (i.e.
> <collection>_shard1_replica1) work as the fromIndex parameter for a
> cross-core join.
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