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