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https://issues.apache.org/jira/browse/DRILL-1472?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14259755#comment-14259755
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Jacques Nadeau commented on DRILL-1472:
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RepeatedListed is not a fully defined type. As such, you need to use
FieldReader in UDFs.
> Function resolution cannot handle repeated list as an input type to a UDF
> -------------------------------------------------------------------------
>
> Key: DRILL-1472
> URL: https://issues.apache.org/jira/browse/DRILL-1472
> Project: Apache Drill
> Issue Type: Bug
> Reporter: Jason Altekruse
> Fix For: 0.8.0
>
>
> I tried adding a function to allow counting the elements of a repeated list.
> Using an input type of RepeatedListHolder does not appear to be handled in
> the current function resolver.
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