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https://issues.apache.org/jira/browse/TAJO-121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13736584#comment-13736584
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Jinho Kim commented on TAJO-121:
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Solved the MiniYARNCluster issue.
refer to TAJO-118
> Add LogicalPlanVisitor and Refactor LogicalOptimizer to use the visitor
> -----------------------------------------------------------------------
>
> Key: TAJO-121
> URL: https://issues.apache.org/jira/browse/TAJO-121
> Project: Tajo
> Issue Type: Sub-task
> Components: planner/optimizer
> Reporter: Hyunsik Choi
> Assignee: Hyunsik Choi
> Fix For: 0.2-incubating
>
> Attachments: TAJO-121_2.patch, TAJO-121.patch
>
>
> This patch adds LogicalPlanVisitor and improves LogicalOptimizer to use this
> visitor. This improves the code readability and maintainability. Also, this
> visitor will be helpful for making unit tests.
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