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https://issues.apache.org/jira/browse/PHOENIX-2891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15305010#comment-15305010
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Andrew Purtell commented on PHOENIX-2891:
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Similar to HBase "system coprocessors" in concept and implementation?
> Support system-wide UDFs
> ------------------------
>
> Key: PHOENIX-2891
> URL: https://issues.apache.org/jira/browse/PHOENIX-2891
> Project: Phoenix
> Issue Type: Improvement
> Affects Versions: 4.4.0
> Reporter: Nick Dimiduk
>
> Current UDF implementation requires the use of DynamicClassLoader to locate
> function classes. This imposes all sorts of filesystem permissions
> complications when running clients as non-hbase users. Some of these problems
> can be simplified by supporting loading classes from "standard" classloader,
> IE, whatever is in hbase/sqlline's classpath. Not requiring the
> DynamicClassLoader means those permissions issues can be avoided and better
> support top-down installation of UDFs (ie, via configuration management
> systems like chef/puppet). This will enable a simplified model of deployment
> for system or "site" UDFs.
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