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From "Thejas M Nair (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-12427) Improve HiveServer2 *DBC ResultSet performance
Date Mon, 04 Jan 2016 19:27:39 GMT

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

Thejas M Nair updated HIVE-12427:
---------------------------------
    Description: 
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.


> Improve HiveServer2 *DBC 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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