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https://issues.apache.org/jira/browse/HIVE-4521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13652276#comment-13652276
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Gunther Hagleitner commented on HIVE-4521:
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Added another case in patch .2: Empty bucketed tables throw "Metadata
Incorrect" when they are joined. It'll produce 0 results but should not fail.
> Auto join conversion fails in certain cases (empty tables, empty partitions,
> no partitions)
> -------------------------------------------------------------------------------------------
>
> Key: HIVE-4521
> URL: https://issues.apache.org/jira/browse/HIVE-4521
> Project: Hive
> Issue Type: Bug
> Reporter: Gunther Hagleitner
> Assignee: Gunther Hagleitner
> Attachments: HIVE-4521.1.patch, HIVE-4521.2.patch
>
>
> Automatic join conversion for both map joins as well as smb joins fails when
> tables, files or partitions are empty (see test cases in patch). Error
> messages include: "Big Table Alias is null" and "Divide by Zero".
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