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https://issues.apache.org/jira/browse/CARBONDATA-268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15513231#comment-15513231
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ASF GitHub Bot commented on CARBONDATA-268:
-------------------------------------------

GitHub user QiangCai opened a pull request:

    https://github.com/apache/incubator-carbondata/pull/190

    [CARBONDATA-268]Improve carbonoptimizer

    

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/QiangCai/incubator-carbondata improveoptimizer

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/incubator-carbondata/pull/190.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #190
    
----
commit 343a3d20fca9bee15a22063b4be8d73d21b81646
Author: c00318382 <c00318...@huaweiobz.com>
Date:   2016-09-22T10:57:00Z

    improve carbonoptimizer

----


> CarbonOptimizer has performance problem
> ---------------------------------------
>
>                 Key: CARBONDATA-268
>                 URL: https://issues.apache.org/jira/browse/CARBONDATA-268
>             Project: CarbonData
>          Issue Type: Bug
>    Affects Versions: 0.1.0-incubating
>            Reporter: QiangCai
>
> 1. invoke relation lookup many times 
> 2. lookup list many times



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