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Posted to dev@lucene.apache.org by "Joel Bernstein (JIRA)" <ji...@apache.org> on 2018/03/29 00:44:00 UTC

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

Joel Bernstein created SOLR-12159:
-------------------------------------

             Summary: 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


The *memset* function will set multiple numeric arrays from fields in an underlying TupleStream. This will be much more memory efficient then calling *col* function multiple times on an in memory list of Tuples.  Sample syntax:
{code:java}
let(a=memset(copy="field1, field2",
             vars="c, d",
             random(collection1, q="*:*", fl="field1, field2", rows=50000)),
    e=corr(c, d))  

 {code}
 



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