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From "Ramesh Kumar Thangarajan (Jira)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-23281) ObjectStore::convertToStorageDescriptor can be optimised to reduce calls to DB for ACID tables
Date Thu, 21 May 2020 09:01:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-23281?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ramesh Kumar Thangarajan updated HIVE-23281:
--------------------------------------------
    Status: Open  (was: Patch Available)

> ObjectStore::convertToStorageDescriptor can be optimised to reduce calls to DB for ACID
tables
> ----------------------------------------------------------------------------------------------
>
>                 Key: HIVE-23281
>                 URL: https://issues.apache.org/jira/browse/HIVE-23281
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Rajesh Balamohan
>            Assignee: Ramesh Kumar Thangarajan
>            Priority: Major
>         Attachments: HIVE-23281.1.patch, HIVE-23281.2.patch, HIVE-23281.3.patch, HIVE-23281.4.patch,
HIVE-23281.5.patch, image-2020-04-23-13-56-17-210.png
>
>
> [https://github.com/apache/hive/blob/master/standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/ObjectStore.java#L1980]
>  
> [https://github.com/apache/hive/blob/master/standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/ObjectStore.java#L1982]
>  
> SkewInfo, bucketCols, ordering etc are not needed for ACID tables. It may be good to
check for transactional tables and get rid these calls in table lookups.
>  
> This should help in reducing DB calls.
> !image-2020-04-23-13-56-17-210.png|width=669,height=485!
>  



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