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https://issues.apache.org/jira/browse/HIVE-734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12740358#action_12740358
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Zheng Shao commented on HIVE-734:
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+1 on the idea. We have WritableVoidObjectInspector, JavaVoidObjectInspector
etc but none are actually implemented or used.
Can we use JavaVoidObjectInspector for null constant? We probably need to
modify ObjectInspectorConverters to allow conversion from void type to any type
as well.
> problem in dealing with null
> ----------------------------
>
> Key: HIVE-734
> URL: https://issues.apache.org/jira/browse/HIVE-734
> Project: Hadoop Hive
> Issue Type: Bug
> Reporter: Zheng Shao
> Assignee: Ning Zhang
>
> This command fails with the following error:
> {code}
> hive/bin/hive -e "INSERT OVERWRITE LOCAL DIRECTORY 'abc' select null from
> zshao_tt"
> FAILED: Error in semantic analysis:
> java.lang.RuntimeException: Internal error: Cannot find ObjectInspector for
> VOID
> {code}
> When 'null' is replaced by '' it works.
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