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From "Vaibhav Gumashta (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-12427) HiveServer2: Improve HiveServer2 JDBC/ODBC ResultSet performance
Date Fri, 22 Apr 2016 19:29:13 GMT

     [ https://issues.apache.org/jira/browse/HIVE-12427?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vaibhav Gumashta updated HIVE-12427:
------------------------------------
    Summary: HiveServer2: Improve HiveServer2 JDBC/ODBC ResultSet performance  (was: Improve
HiveServer2 *DBC ResultSet performance)

> HiveServer2: Improve HiveServer2 JDBC/ODBC ResultSet performance
> ----------------------------------------------------------------
>
>                 Key: HIVE-12427
>                 URL: https://issues.apache.org/jira/browse/HIVE-12427
>             Project: Hive
>          Issue Type: Improvement
>          Components: HiveServer2, JDBC, ODBC
>            Reporter: Vaibhav Gumashta
>
> The current implementation does a lot of CPU intensive work in HiveServer2. It deserializes
the temporary results written to disk  and also serializes the results into thrift objects
in HS2. This adds to the latency of fetching results via HS2. Doing that work in the task
nodes would get that work done in parallel and scale it, thereby reducing the time it takes
to retrieve large results.



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