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https://issues.apache.org/jira/browse/HIVE-5951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13842003#comment-13842003
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Sergey Shelukhin commented on HIVE-5951:
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that is about not showing in hooks. That is because the new code does not put
the partitions that were duplicate into output... that is easy to fix, but I
wonder why they are needed
> improve performance of adding partitions from client
> ----------------------------------------------------
>
> Key: HIVE-5951
> URL: https://issues.apache.org/jira/browse/HIVE-5951
> Project: Hive
> Issue Type: Improvement
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Attachments: HIVE-5951.01.patch, HIVE-5951.02.patch,
> HIVE-5951.nogen.patch, HIVE-5951.nogen.patch, HIVE-5951.nogen.patch,
> HIVE-5951.patch
>
>
> Adding partitions to metastore is currently very inefficient. There are small
> things like, for !ifNotExists case, DDLSemanticAnalyzer gets the full
> partition object for every spec (which is a network call to metastore), and
> then discards it instantly; there's also general problem that too much
> processing is done on client side. DDLSA should analyze the query and make
> one call to metastore (or maybe a set of batched calls if there are too many
> partitions in the command), metastore should then figure out stuff and insert
> in batch.
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