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https://issues.apache.org/jira/browse/SOLR-5320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13823677#comment-13823677
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ASF subversion and git services commented on SOLR-5320:
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Commit 1542272 from sha...@apache.org in branch 'dev/trunk'
[ https://svn.apache.org/r1542272 ]
SOLR-5320: Added support for tri-level compositeId routing
> Multi level compositeId router
> ------------------------------
>
> Key: SOLR-5320
> URL: https://issues.apache.org/jira/browse/SOLR-5320
> Project: Solr
> Issue Type: New Feature
> Components: SolrCloud
> Reporter: Anshum Gupta
> Assignee: Shalin Shekhar Mangar
> Attachments: SOLR-5320-refactored.patch, SOLR-5320.patch,
> SOLR-5320.patch, SOLR-5320.patch, SOLR-5320.patch, SOLR-5320.patch,
> SOLR-5320.patch, SOLR-5320.patch
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> This would enable multi level routing as compared to the 2 level routing
> available as of now. On the usage bit, here's an example:
> Document Id: myapp!dummyuser!doc
> myapp!dummyuser! can be used as the shardkey for searching content for
> dummyuser.
> myapp! can be used for searching across all users of myapp.
> I am looking at either a 3 (or 4) level routing. The 32 bit hash would then
> comprise of 8X4 components from each part (in case of 4 level).
> Usage:
> Document Id: myapp!dummyuser!doc
> To query all users for a particular app (default setup), the route key should
> be: 'myapp/8!'.
> To query a particular user for a specific app, the route key should be:
> 'myapp!dummyuser!'
> The syntax for querying all users for a particular app is required because
> this router works at both 2 and 3 level of composite id.
> A route key of 'myapp!' would technically translate to constructing the hash
> range with 16 bits coming from the key i.e. 2-level composite id.
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