[jira] [Resolved] (SOLR-12159) Add memset Stream Evaluator

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[jira] [Resolved] (SOLR-12159) Add memset Stream Evaluator

JIRA jira@apache.org

     [ https://issues.apache.org/jira/browse/SOLR-12159?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joel Bernstein resolved SOLR-12159.
-----------------------------------
    Resolution: Resolved

> Add memset Stream Evaluator
> ---------------------------
>
>                 Key: SOLR-12159
>                 URL: https://issues.apache.org/jira/browse/SOLR-12159
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public)
>            Reporter: Joel Bernstein
>            Assignee: Joel Bernstein
>            Priority: Major
>             Fix For: 7.4
>
>         Attachments: SOLR-12159.patch, SOLR-12159.patch, SOLR-12159.patch
>
>
> The *memset* function copies multiple numeric arrays into memory from fields in an underlying TupleStream. This will be much more memory efficient then calling the *col* function multiple times on an in-memory list of Tuples.  Sample syntax:
> {code:java}
> let(a=memset(random(collection1, q="*:*", fl="field1, field2", rows=10000),
>              cols="field1, field2",
>              vars="c, d",
>              size=10000),
>     e=corr(c, d))  
>  {code}
>  



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