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https://issues.apache.org/jira/browse/HIVE-957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12784009#action_12784009
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Namit Jain commented on HIVE-957:
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OK - but can you add a new test :
create table T -- 3 cols
create partition P1 --> will have 3 columns
alter table T add column 4
create partition P4 --> will have 4 columns
select c1,c2,c3,c4 from T (include both P1 and P2).
> Partition Metadata and Table Metadata
> -------------------------------------
>
> Key: HIVE-957
> URL: https://issues.apache.org/jira/browse/HIVE-957
> Project: Hadoop Hive
> Issue Type: Bug
> Reporter: He Yongqiang
> Attachments: hive-957-2009-11-30.patch
>
>
> Right now, we choose to use partition lever metadata. All metadata (column
> names, column types, fileformat, serde class, serde properties) right now are
> from partition level metadata. But hive does not support a method now to
> alter all existing partitions' metadata, so users mostly choose to alter
> table metadata, and think hive will use the new table level metadata.
> One approach is that we may need to provide a way to let user alter all
> partitions' metadata with one simple command. Right now a short term solution
> is to only get fileformat, serde class metadata from paritition level
> metadata, and use all other metadata from table.
> any comments?
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