"set" command is case-sensitive; also lacks "EXTENDED" support, as documented 
on http://wiki.apache.org/hadoop/Hive/HiveQL
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                 Key: HADOOP-4548
                 URL: https://issues.apache.org/jira/browse/HADOOP-4548
             Project: Hadoop Core
          Issue Type: Bug
            Reporter: Jeff Hammerbacher


When I try to run "SET;" from the Hive shell, I get a parse error (FAILED: 
Parse Error: line 1:0 cannot recognize input 'SET'). It works if I run "set;". 
Also, when I try to run "set extended;", I get a new kind of error, with error 
message "extended is undefined".

On another note, can we alias "SET;" to something more descriptive, like "SHOW 
VARIABLES" (e.g. http://dev.mysql.com/doc/refman/5.0/en/show-variables.html)?

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