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From "DaeMyung Kang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TAJO-122) Add EXPLAIN clause to show a logical plan
Date Sat, 11 Jan 2014 16:21:50 GMT

    [ https://issues.apache.org/jira/browse/TAJO-122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13868828#comment-13868828

DaeMyung Kang commented on TAJO-122:

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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