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From "Dilip Joseph (JIRA)" <>
Subject [jira] [Updated] (HIVE-3884) Better align columns in DESCRIBE table_name output to make more human-readable
Date Fri, 18 Jan 2013 22:44:13 GMT


Dilip Joseph updated HIVE-3884:

    Status: Patch Available  (was: Open)
> Better align columns in DESCRIBE table_name output to make more human-readable
> ------------------------------------------------------------------------------
>                 Key: HIVE-3884
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>          Components: CLI
>    Affects Versions: 0.9.0
>            Reporter: Dilip Joseph
>            Assignee: Dilip Joseph
>            Priority: Minor
>             Fix For: 0.11.0
>         Attachments: describe_test_table.png, HIVE-3884.1.patch.txt, HIVE-3884.2.patch.txt
> 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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