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Posted to issues@tez.apache.org by "Rajesh Balamohan (JIRA)" <ji...@apache.org> on 2014/09/19 00:07:36 UTC

[jira] [Commented] (TEZ-1596) Secure Shuffle utils is extremely expensive for fast queries

    [ https://issues.apache.org/jira/browse/TEZ-1596?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14139601#comment-14139601 ] 

Rajesh Balamohan commented on TEZ-1596:
---------------------------------------

[~gopalv] - If you have the profiler output, can we drill one level down.  (This is to understand whether base64 encoding is expensive or the HMAC generation).  

> Secure Shuffle utils is extremely expensive for fast queries
> ------------------------------------------------------------
>
>                 Key: TEZ-1596
>                 URL: https://issues.apache.org/jira/browse/TEZ-1596
>             Project: Apache Tez
>          Issue Type: Bug
>    Affects Versions: 0.6.0
>            Reporter: Gopal V
>         Attachments: shuffle-secure.png
>
>
> Generating the hash for YARN's secure shuffle is more expensive than the actual HTTP call once keep-alive is turned on.
> !shuffle-secure.png!



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