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From "Jihoon Son (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TAJO-161) Optimization for input correlation and output sharing of physical operator
Date Sun, 27 Oct 2013 10:01:32 GMT

    [ https://issues.apache.org/jira/browse/TAJO-161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13806301#comment-13806301
] 

Jihoon Son commented on TAJO-161:
---------------------------------

+1 for this issue.
It can reduce the number of steps of distributed processing, and thus significantly improve
the performance.

> Optimization for input correlation and output sharing of physical operator
> --------------------------------------------------------------------------
>
>                 Key: TAJO-161
>                 URL: https://issues.apache.org/jira/browse/TAJO-161
>             Project: Tajo
>          Issue Type: New Feature
>          Components: physical operator, planner/optimizer
>            Reporter: Hyunsik Choi
>              Labels: ysmart
>
> See the YSmart presentation material:
> https://skydrive.live.com/view.aspx?resid=B5907D87BB3B44F!445&app=PowerPoint&authkey=!ACManEpA_neVUZI
> If two or more physical operators can share tuple outputs of one child node, the YSmart
approach can be applied to Tajo.



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