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https://issues.apache.org/jira/browse/DRILL-1127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jacques Nadeau resolved DRILL-1127.
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Resolution: Fixed
> Automatically use StrAgg and support non-holder workspace variables in UDAFs
> ----------------------------------------------------------------------------
>
> Key: DRILL-1127
> URL: https://issues.apache.org/jira/browse/DRILL-1127
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Codegen
> Reporter: Jacques Nadeau
> Assignee: Mehant Baid
> Fix For: 0.5.0
>
>
> Right now, the FunctionConverter will fail to load UDAFs that use non holder
> workspace variables. This should be constrained to a restriction in using
> hash aggregation. If we detect one of these functions (or use of variable
> width or repeated data types workspace variables), we should only allow use
> of StreamingAggregate during planning.
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