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https://issues.apache.org/jira/browse/DRILL-7886?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17308571#comment-17308571
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ye tian commented on DRILL-7886:
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Hi [~dzamo]. Well thanks for your lesson. I shall refer to the mailing list
first. Actually I overlooked it when I found there're no GitHub issues. I'll
come back if I make some changes.
> Add new ValueHolder to Apache Drill
> -----------------------------------
>
> Key: DRILL-7886
> URL: https://issues.apache.org/jira/browse/DRILL-7886
> Project: Apache Drill
> Issue Type: Improvement
> Components: Functions - Drill
> Affects Versions: 1.18.0
> Reporter: ye tian
> Priority: Major
> Fix For: 1.18.0
>
>
> Hi I'm developing Apache Drill UDFs. I need a self-defined class in the
> workspace of my aggregate function. But UDAF's workspace does not support
> variables other than ValueHolders. So my question is: is it able to write a
> ValueHolders for self-defined classes? Any instructions are also welcome.
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