[jira] [Commented] (HIVE-5951) improve performance of adding partitions from client

["Sergey Shelukhin (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-5951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13840837#comment-13840837 ] 

Sergey Shelukhin commented on HIVE-5951:
----------------------------------------

RB at https://reviews.apache.org/r/16074/

> 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.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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