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From "Xuefu Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-4858) Sort "show grant" result to improve usability and testability
Date Fri, 19 Jul 2013 19:00:48 GMT

    [ https://issues.apache.org/jira/browse/HIVE-4858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13713952#comment-13713952
] 

Xuefu Zhang commented on HIVE-4858:
-----------------------------------

[~ashutoshc] I didn't know about HIVE-3775, but it seems a good way to solve random order
problem for testing purpose. However, do you think also it's a good idea to have a deterministic
ordering for SQL outputs? For instance, it might seems more usable with an ordered output
if user does a "show tables", etc.

Having a deterministic ordering in sql output is another motivation of this JIRA, though it
only takes care of "show grants". Hive is a little inconsistent in this. I think "show databases"
and "show tables" diffs in this behavior.
                
> Sort "show grant" result to improve usability and testability
> -------------------------------------------------------------
>
>                 Key: HIVE-4858
>                 URL: https://issues.apache.org/jira/browse/HIVE-4858
>             Project: Hive
>          Issue Type: Improvement
>          Components: CLI
>    Affects Versions: 0.10.0, 0.11.0
>            Reporter: Xuefu Zhang
>            Assignee: Xuefu Zhang
>            Priority: Minor
>             Fix For: 0.11.1
>
>         Attachments: HIVE-4858.1.patch, HIVE-4858.patch
>
>
> Currently Hive outputs the result of "show grant" command in no deterministic order.
It outputs the set of each privilege type in the order of whatever returned from DB (DataNucleus).
Randomness can arise and tests (depending on the order) can fail, especially in events of
library upgrade (DN or JVM upgrade). Sorting the result will avoid the potential randomness
and make the output more deterministic, thus not only improving the readability of the output
but also making the test more robust.  

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