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From "Abhishek Kapoor (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8834) Hadoop examples when run without an argument, gives ERROR instead of just usage info
Date Wed, 20 Feb 2013 17:51:13 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13582368#comment-13582368
] 

Abhishek Kapoor commented on HADOOP-8834:
-----------------------------------------

I will be removing ERROR from "ERROR: Wrong number of parameters" and will update sysout with
"Wrong number of parameters"

Findings:
So far only two classes(Join.java and Sort.java in package org.apache.hadoop.examples in hadoop-mapreduce-exmaples
project) will be affected for all the examples

Please suggest if we need any other amendments for it.
                
> Hadoop examples when run without an argument, gives ERROR instead of just usage info
> ------------------------------------------------------------------------------------
>
>                 Key: HADOOP-8834
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8834
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 0.23.0
>            Reporter: Robert Justice
>            Priority: Minor
>
> Hadoop sort example should not give an ERROR and only should display usage when run with
no parameters. 
> {code}
> $ hadoop jar /usr/lib/hadoop-mapreduce/hadoop-mapreduce-examples.jar sort
> ERROR: Wrong number of parameters: 0 instead of 2.
> sort [-m <maps>] [-r <reduces>] [-inFormat <input format class>] [-outFormat
<output format class>] [-outKey <output key class>] [-outValue <output value
class>] [-totalOrder <pcnt> <num samples> <max splits>] <input>
<output>
> Generic options supported are
> -conf <configuration file>     specify an application configuration file
> -D <property=value>            use value for given property
> -fs <local|namenode:port>      specify a namenode
> -jt <local|jobtracker:port>    specify a job tracker
> -files <comma separated list of files>    specify comma separated files to be copied
to the map reduce cluster
> -libjars <comma separated list of jars>    specify comma separated jar files to
include in the classpath.
> -archives <comma separated list of archives>    specify comma separated archives
to be unarchived on the compute machines.
> The general command line syntax is
> bin/hadoop command [genericOptions] [commandOptions]
> {code}

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