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From "Chaoyu Tang (JIRA)" <>
Subject [jira] [Updated] (HIVE-15061) Metastore types are sometimes case sensitive
Date Fri, 28 Oct 2016 20:05:58 GMT


Chaoyu Tang updated HIVE-15061:
    Attachment:     (was: HIVE-15061.1.patch)

> Metastore types are sometimes case sensitive
> --------------------------------------------
>                 Key: HIVE-15061
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>          Components: API
>    Affects Versions: 1.1.0
>            Reporter: Thomas Tauber-Marshall
>            Assignee: Chaoyu Tang
>         Attachments: HIVE-15061.1.patch, HIVE-15061.1.patch, HIVE-15061.patch
> Impala recently encountered an issue with the metastore ([IMPALA-4260|]
) where column stats would get dropped when adding a column to a table.
> The reason seems to be that Hive does a case sensitive check on the column stats types
during an "alter table" and expects the types to be all lower case. This case sensitive check
doesn't appear to happen when the stats are set in the first place.
> We're solving this on the Impala end by storing types in the metastore as all lower case,
but Hive's behavior here is very confusing. It should either always be case sensitive, so
that you can't create column stats with types that Hive considers invalid, or it should never
be case sensitive.

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