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From "Joel Bernstein (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-8888) Add shortestPath Streaming Expression
Date Tue, 29 Mar 2016 01:13:25 GMT

    [ https://issues.apache.org/jira/browse/SOLR-8888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15215198#comment-15215198
] 

Joel Bernstein commented on SOLR-8888:
--------------------------------------

Initial manual testing with the Enron emails is going well and returning the shortest path
nicely. Next step is to add the Streaming Expression syntax and add more junit tests.

> Add shortestPath Streaming Expression
> -------------------------------------
>
>                 Key: SOLR-8888
>                 URL: https://issues.apache.org/jira/browse/SOLR-8888
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Joel Bernstein
>         Attachments: SOLR-8888.patch, SOLR-8888.patch, SOLR-8888.patch, SOLR-8888.patch
>
>
> This ticket is to implement a distributed shortest path graph traversal as a Streaming
Expression.
> possible expression syntax:
> {code}
> shortestPath(collection, 
>                      from="colA:node1", 
>                      to="colB:node2", 
>                      fq="limiting query", 
>                      maxDepth="10")
> {code}
> This would start from colA:node1 and traverse from colA to colB iteratively until it
finds colB:node2. The shortestPath function would emit Tuples representing the shortest path.
> The optional fq could be used to apply a filter on the traversal.



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