[jira] [Resolved] (SOLR-10426) Add shuffle Streaming Expression

["Joel Bernstein (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-10426?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joel Bernstein resolved SOLR-10426.
-----------------------------------
       Resolution: Resolved
    Fix Version/s: master (7.0)

> Add shuffle Streaming Expression
> --------------------------------
>
>                 Key: SOLR-10426
>                 URL: https://issues.apache.org/jira/browse/SOLR-10426
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Joel Bernstein
>            Assignee: Joel Bernstein
>             Fix For: 6.6, master (7.0)
>
>         Attachments: SOLR-10426.patch
>
>
> Currently the concept of MapReduce shuffling is lumped into the *search* Streaming Expression. This causes quite a bit of confusion as users sometimes perform a search using the /select handler by default, but actually wanted shuffling behavior which requires the /export handler.
> We can solve this problem by creating a separate function called *shuffle* that always uses the /export handler.
> This will also allow us to clean up some behaviors in the search expression that are somewhat unexpected in future tickets.
> {code}
>     parallel(workers, 
>              unique(shuffle(collection1, 
>                             q=*:*, 
>                             fl="id,a_s,a_i,a_f", 
>                             sort="a_f asc, a_i asc", 
>                             partitionKeys="a_f"), 
>                     over="a_f"), 
>              workers="2",
>              sort="a_f asc")
> {code}



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