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https://issues.apache.org/jira/browse/HIVE-16974?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16105354#comment-16105354
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Aihua Xu commented on HIVE-16974:
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Thanks for explanation. I think it's already a good improvement now.
+1.
> Change the sort key for the schema tool validator to be <ID>
> ------------------------------------------------------------
>
> Key: HIVE-16974
> URL: https://issues.apache.org/jira/browse/HIVE-16974
> Project: Hive
> Issue Type: Sub-task
> Components: HiveServer2
> Affects Versions: 3.0.0
> Reporter: Naveen Gangam
> Assignee: Naveen Gangam
> Attachments: HIVE-16974.patch, HIVE-16974.patch
>
>
> In HIVE-16729, we introduced ordering of results/failures returned by
> schematool's validators. This allows fault injection testing to expect
> results that can be verified. However, they were sorted on NAME values which
> in the HMS schema can be NULL. So if the introduced fault has a NULL/BLANK
> name column value, the result could be different depending on the backend
> database(if they sort NULLs first or last).
> So I think it is better to sort on a non-null column value.
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