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https://issues.apache.org/jira/browse/HIVE-2281?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Syed S. Albiz updated HIVE-2281:
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Attachment: HIVE-2281.1.patch
Add defensive checks before using the operator stack and make sure to restore
it to expected state after proceeding
> Regression introduced from HIVE-2155
> ------------------------------------
>
> Key: HIVE-2281
> URL: https://issues.apache.org/jira/browse/HIVE-2281
> Project: Hive
> Issue Type: Bug
> Reporter: Syed S. Albiz
> Assignee: Syed S. Albiz
> Attachments: HIVE-2281.1.patch
>
>
> EXPLAIN SELECT key, count(1) FROM src; throws a null pointer exception due to
> the operator stack not being checked prior to use for constructing the error
> message, due to the change introduced in HIVE-2155 to improve error message
> context tokens.
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