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https://issues.apache.org/jira/browse/SOLR-12198?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joel Bernstein updated SOLR-12198:
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    Description: Currently a few of the Stream Evaluators that work with 
matrices are creating multiple copies of the underlying multi-dimensional 
arrays. This can lead to excessive memory usage. This ticket will change these 
implementations so copies of the multi-dimensional arrays that back a matrix 
are only copied when the *copyOf* function is used.  (was: Currently many of 
the Stream Evaluators that are working with matrices are creating multiple 
copies of the underlying multi-dimensional arrays. This can lead to excessive 
memory usage. This ticket will change the implementations so copies of the 
multi-dimensional arrays that back a matrix are only copied when the *copyOf* 
function is used.)

> Stream Evaluators should not copy matrices needlessly
> -----------------------------------------------------
>
>                 Key: SOLR-12198
>                 URL: https://issues.apache.org/jira/browse/SOLR-12198
>             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
>
>
> Currently a few of the Stream Evaluators that work with matrices are creating 
> multiple copies of the underlying multi-dimensional arrays. This can lead to 
> excessive memory usage. This ticket will change these implementations so 
> copies of the multi-dimensional arrays that back a matrix are only copied 
> when the *copyOf* function is used.



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