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https://issues.apache.org/jira/browse/KNOX-1524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16650272#comment-16650272
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Kevin Risden commented on KNOX-1524:
------------------------------------

h2. Result Interpretation

HiveServer2 adds quite a bit of overhead compared to reading the file directly 
from HDFS. Binary mode of HiveServer2 is more efficient than HTTP mode. The 
Knox overhead is minimal compared to the HiveServer2 overhead. There are 
probably some improvements that can be made to HiveServer2 to improve the 
performance. 

> Hive "select *" performance evaluation
> --------------------------------------
>
>                 Key: KNOX-1524
>                 URL: https://issues.apache.org/jira/browse/KNOX-1524
>             Project: Apache Knox
>          Issue Type: Task
>            Reporter: Kevin Risden
>            Assignee: Kevin Risden
>            Priority: Major
>             Fix For: 1.2.0
>
>
> While looking at WebHDFS performance in KNOX-1221, I decided to look a bit 
> more into performance for common use cases. Hive performance is another area 
> that could use some research.



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