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https://issues.apache.org/jira/browse/HIVE-957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12783950#action_12783950
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Prasad Chakka commented on HIVE-957:
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it is not that much code to write a new command to alter all the partitions.
the metadata calls already exist, only grammar needs to be enhanced.
> Partiition 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
>
> 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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