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From "Ning Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2114) Backward incompatibility introduced from HIVE-2082 in MetaStoreUtils.getPartSchemaFromTableSchema()
Date Fri, 15 Apr 2011 20:58:05 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13020429#comment-13020429
] 

Ning Zhang commented on HIVE-2114:
----------------------------------

https://reviews.apache.org/r/605/

> Backward incompatibility introduced from HIVE-2082 in MetaStoreUtils.getPartSchemaFromTableSchema()
> ---------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-2114
>                 URL: https://issues.apache.org/jira/browse/HIVE-2114
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Ning Zhang
>            Assignee: Ning Zhang
>         Attachments: HIVE-2114.patch
>
>
> In MetaStoreUtils.getPartSchemaFromTableSchema() the Propertie of a Partitions is first
created by cloning the Properties from a Table. Then some of the properties are overwritten
by the Partition level properties (Location/InputFormat/OutputFormat etc.). It also copies
the properties from the SerDeInfo. If the SerDeInfo contains properties 'columns', 'column_types'
and 'partition_columns' this will introduce incompatibility from the previous code path MetaStoreUtils.getSchema().
In getSchema(), the 'columns' etc are put after copying the SerDeInfo, which means we should
not overwrite these 3 properties in the new code.

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