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Erick Erickson commented on SOLR-7090: -------------------------------------- These two JIRAs are at least in the same ballpark if you think of an external collection as a specialized external data source in SOLR-7341. My point in linking these is to make sure both are considered if it turns out that these should be folded together. > Cross collection join > --------------------- > > Key: SOLR-7090 > URL: https://issues.apache.org/jira/browse/SOLR-7090 > Project: Solr > Issue Type: New Feature > Reporter: Ishan Chattopadhyaya > Fix For: 5.2, master > > Attachments: SOLR-7090-fulljoin.patch, SOLR-7090.patch > > > Although SOLR-4905 supports joins across collections in Cloud mode, there are > limitations, (i) the secondary collection must be replicated at each node > where the primary collection has a replica, (ii) the secondary collection > must be singly sharded. > This issue explores ideas/possibilities of cross collection joins, even > across nodes. This will be helpful for users who wish to maintain boosts or > signals in a secondary, more frequently updated collection, and perform query > time join of these boosts/signals with results from the primary collection. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org