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From "Grant Ingersoll (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAHOUT-1122) Mahout prints usage statement AND executes the request class which is confusing
Date Sat, 01 Jun 2013 21:13:47 GMT

     [ https://issues.apache.org/jira/browse/MAHOUT-1122?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Grant Ingersoll resolved MAHOUT-1122.
-------------------------------------

    Resolution: Won't Fix

It appears to me that it is printing the usage and then exiting.
                
> Mahout prints usage statement AND executes the request class which is confusing
> -------------------------------------------------------------------------------
>
>                 Key: MAHOUT-1122
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1122
>             Project: Mahout
>          Issue Type: Bug
>          Components: CLI
>    Affects Versions: 0.7
>            Reporter: Clint Heath
>            Priority: Minor
>
> We have seen an issue when running mahout on the CLI where if you do not include required
arguments, the specified class still gets executed to completion, but Mahout prints a usage
statement too, which is confusing.  If a required argument is missed, print usage and exit.
> Here is the log:
> [server~]$ mahout org.apache.mahout.clustering.syntheticcontrol.kmeans.Job -Dpool.name=analytics-pool

> MAHOUT_LOCAL is not set; adding HADOOP_CONF_DIR to classpath. 
> Running on hadoop, using /usr/lib/hadoop/bin/hadoop and HADOOP_CONF_DIR=/etc/hadoop/conf

> MAHOUT-JOB: /usr/lib/mahout/mahout-examples-0.7-cdh4.1.1-job.jar 
> 12/11/29 00:01:37 WARN driver.MahoutDriver: No org.apache.mahout.clustering.syntheticcontrol.kmeans.Job.props
found on classpath, will use command-line arguments only 
> 12/11/29 00:01:37 INFO kmeans.Job: Running with only user-supplied arguments 
> 12/11/29 00:01:38 ERROR common.AbstractJob: Missing required option --t1 
> usage: <command> [Generic Options] [Job-Specific Options] 
> Generic Options: 
> -archives <paths> comma separated archives to be unarchived 
> on the compute machines. 
> -conf <configuration file> specify an application configuration file 
> -D <property=value> use value for given property 
> -files <paths> comma separated files to be copied to the 
> map reduce cluster 
> -fs <local|namenode:port> specify a namenode 
> -jt <local|jobtracker:port> specify a job tracker 
> -libjars <paths> comma separated jar files to include in 
> the classpath. 
> -tokenCacheFile <tokensFile> name of the file with the tokens 
> Missing required option --t1 
> Usage: 
> [--input <input> --output <output> --distanceMeasure <distanceMeasure>

> --numClusters <k> --t1 <t1> --t2 <t2> --convergenceDelta <convergenceDelta>

> --maxIter <maxIter> --overwrite --help --tempDir <tempDir> --startPhase 
> <startPhase> --endPhase <endPhase>] 
> --t1 (-t1) t1 T1 threshold value 
> 12/11/29 00:01:38 INFO driver.MahoutDriver: Program took 192 ms (Minutes: 0.0032)

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