[
https://issues.apache.org/jira/browse/HIVE-734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12740353#action_12740353
]
Ning Zhang commented on HIVE-734:
---------------------------------
The error is threw during semantic analysis where the parser try to instantiate
an ObjectInspector for type "void" (corresponding to null).
The following similar query succeeded:
select 2 from zshao_tt;
since the semantic analyzer is able to deduct type (int) from the constant 2.
Since null can also be treated as a constant, I think we need to write an
ObjectInspector for its type (void) too. And the object inspector will always
return null for each row.
> 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.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
