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Date: Sat, 7 Dec 2013 01:39:35 +0000 (UTC)
From: "Ashutosh Chauhan (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
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Subject: [jira] [Commented] (HIVE-5951) improve performance of adding
 partitions from client
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    [ https://issues.apache.org/jira/browse/HIVE-5951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13841998#comment-13841998 ] 

Ashutosh Chauhan commented on HIVE-5951:
----------------------------------------

In explain plan or hooks ?

> 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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