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https://issues.apache.org/jira/browse/TAJO-2089?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15184249#comment-15184249
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ASF GitHub Bot commented on TAJO-2089:
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Github user blrunner commented on the pull request:
https://github.com/apache/tajo/pull/972#issuecomment-193561687
+1
LGTM! I found that ResultSet of TajoClient using some test queries had
retrieved null values.
> Improve null handling in UDF
> ----------------------------
>
> Key: TAJO-2089
> URL: https://issues.apache.org/jira/browse/TAJO-2089
> Project: Tajo
> Issue Type: Improvement
> Components: Function/UDF
> Reporter: Jinho Kim
> Assignee: Jinho Kim
> Priority: Minor
>
> A null value should convert to NullDatum in UDF. if not, it throw a
> TajoInternalError. Many people mistake the null handling.
> So we add null handling, it would be better
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