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Posted to dev@lucene.apache.org by "Colin Bartolome (JIRA)" <ji...@apache.org> on 2013/02/09 00:33:14 UTC
[jira] [Commented] (LUCENE-3759) Support joining in a distributed
environment.
[ https://issues.apache.org/jira/browse/LUCENE-3759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13574944#comment-13574944 ]
Colin Bartolome commented on LUCENE-3759:
-----------------------------------------
This definitely affects Solr 4.1 and would be very helpful. I might not be able to run with shards without being able to use join queries.
> Support joining in a distributed environment.
> ---------------------------------------------
>
> Key: LUCENE-3759
> URL: https://issues.apache.org/jira/browse/LUCENE-3759
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/join
> Reporter: Martijn van Groningen
>
> Add two more methods in JoinUtil to support joining in a distributed manner.
> * Method to retrieve all from values.
> * Method to create a TermsQuery based on a set of from terms.
> With these two methods distributed joining can be supported following these steps:
> # Retrieve from values from each shard
> # Merge the retrieved from values.
> # Create a TermsQuery based on the merged from terms and send this query to all shards.
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