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DaeMyung Kang commented on TAJO-122:
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now reviewboard doesn't work.
so I can't make review on reviewboard.
when it works, I will upload 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.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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