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https://issues.apache.org/jira/browse/TAJO-122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13870909#comment-13870909
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Hyunsik Choi edited comment on TAJO-122 at 1/14/14 5:08 PM:
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I reviewed this patch and gave +1.
committed it to master branch. Thank you for your contribution.
was (Author: hyunsik):
I reviewed this patch and gave +1.
committed it to master branch. Thank you for the review.
> Add EXPLAIN clause to show a logical plan
> -----------------------------------------
>
> Key: TAJO-122
> URL: https://issues.apache.org/jira/browse/TAJO-122
> Project: Tajo
> Issue Type: New Feature
> Components: planner/optimizer
> Reporter: Hyunsik Choi
> Assignee: DaeMyung Kang
> Fix For: 0.8-incubating
>
> Attachments: TAJO-122.2.patch, TAJO-122.patch
>
>
> (I've changed this issue from implementing an utility class to preint JSON to
> implementing EXPLAIN clause support.)
> For convenience for debugging and developing new engine (TAJO-104), we need
> EXPLAIN clause to print plans used in Tajo internal. In this issue, we only
> focus on showing a logical plan.
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