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From "Wenchen Fan (Jira)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-27395) Improve EXPLAIN command
Date Mon, 26 Aug 2019 12:39:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-27395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wenchen Fan resolved SPARK-27395.
---------------------------------
    Fix Version/s: 3.0.0
       Resolution: Fixed

Issue resolved by pull request 24759
[https://github.com/apache/spark/pull/24759]

> Improve EXPLAIN command
> -----------------------
>
>                 Key: SPARK-27395
>                 URL: https://issues.apache.org/jira/browse/SPARK-27395
>             Project: Spark
>          Issue Type: Umbrella
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Xiao Li
>            Assignee: Dilip Biswal
>            Priority: Major
>             Fix For: 3.0.0
>
>
> Currently, when the query is complex or the output schema is long, the outputs of our
EXPAIN command are not readable. Our documentation does not explain how to read the plans
[e.g., the meaning of each field]. It is confusing to end users. The current format limits
us to add more more useful details to each operator, since it is already very long. We need
to reformat the query plans for better readability. 
> In this release, we need to improve the usability and documentation of EXPLAIN. 



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