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Posted to dev@hive.apache.org by "Gang Tim Liu (JIRA)" <ji...@apache.org> on 2013/01/10 19:42:13 UTC

[jira] [Assigned] (HIVE-3884) Better align columns in DESCRIBE table_name output to make more human-readable

     [ https://issues.apache.org/jira/browse/HIVE-3884?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gang Tim Liu reassigned HIVE-3884:
----------------------------------

    Assignee: Gang Tim Liu
    
> Better align columns in DESCRIBE table_name output to make more human-readable
> ------------------------------------------------------------------------------
>
>                 Key: HIVE-3884
>                 URL: https://issues.apache.org/jira/browse/HIVE-3884
>             Project: Hive
>          Issue Type: Improvement
>          Components: CLI
>    Affects Versions: 0.9.0
>            Reporter: Dilip Joseph
>            Assignee: Gang Tim Liu
>            Priority: Minor
>         Attachments: describe_test_table.png
>
>
> If a table contains very long comments or very long column names, the output of DESCRIBE table_name is not aligned nicely.  The attached screenshot shows the following two problems:
> 1. Rows with long column names do not align well with other columns.
> 2. Rows with long comments wrap to the next line, and make it hard to read the output.  The wrapping behavior depends on the width of the user's terminal width.
> It will be nice to have a DESCRIBE PRETTY table_name command that will produce nicely formatted output that avoids the two problems mentioned above.  It is better to introduce a new DESCRIBE PRETTY command rather than change the behavior of the existing DESCRIBE or DESCRIBE FORMATTED commands, so that we avoid breaking any scripts that automatically parse the output.
> Since the pretty formatting depends on the current terminal width, we need a new hive conf parameter to tell the CLI to auto-detect the current terminal width or to use a fixed width (needed for unit tests).

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