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https://issues.apache.org/jira/browse/MAPREDUCE-617?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Karam Singh resolved MAPREDUCE-617.
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Fix Version/s: 0.20.2
Resolution: Fixed
Now Streaming does not throw java.lang.RuntimeException and ERROR while
displaying help in Hadoop. 02.0.2. So marking it as resolved fixed
> Streaming should not throw java.lang.RuntimeException and ERROR while
> displaying help
> -------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-617
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-617
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: contrib/streaming
> Reporter: Karam Singh
> Priority: Minor
> Fix For: 0.20.2
>
>
> Run streaming command as -:
> bin/hadoop jar contrib/streaming/hadoop-*-streaming.jar -help
> it will dislay following -:
> ERROR streaming.StreamJob: Missing required option -input
> Usage: $HADOOP_HOME/bin/hadoop [--config dir] jar \
> $HADOOP_HOME/hadoop-streaming.jar [options]
> Options:
> -input <path> DFS input file(s) for the Map step
> -output <path> DFS output directory for the Reduce step
> -mapper <cmd|JavaClassName> The streaming command to run
> -combiner <JavaClassName> Combiner has to be a Java class
> -reducer <cmd|JavaClassName> The streaming command to run
> -file <file> File/dir to be shipped in the Job jar file
> -dfs <h:p>|local Optional. Override DFS configuration
> -jt <h:p>|local Optional. Override JobTracker configuration
> -additionalconfspec specfile Optional.
> -inputformat
> TextInputFormat(default)|SequenceFileAsTextInputFormat|JavaClassName Optional.
> -outputformat TextOutputFormat(default)|JavaClassName Optional.
> -partitioner JavaClassName Optional.
> -numReduceTasks <num> Optional.
> -inputreader <spec> Optional.
> -jobconf <n>=<v> Optional. Add or override a JobConf property
> -cmdenv <n>=<v> Optional. Pass env.var to streaming commands
> -mapdebug <path> Optional. To run this script when a map task fails
> -reducedebug <path> Optional. To run this script when a reduce task fails
> -cacheFile fileNameURI
> -cacheArchive fileNameURI
> -verbose
> For more details about these options:
> Use $HADOOP_HOME/bin/hadoop jar build/hadoop-streaming.jar -info
> Exception in thread "main" java.lang.RuntimeException:
> at org.apache.hadoop.streaming.StreamJob.fail(StreamJob.java:542)
> at org.apache.hadoop.streaming.StreamJob.exitUsage(StreamJob.java:481)
> at org.apache.hadoop.streaming.StreamJob.parseArgv(StreamJob.java:203)
> at org.apache.hadoop.streaming.StreamJob.go(StreamJob.java:105)
> at
> org.apache.hadoop.streaming.HadoopStreaming.main(HadoopStreaming.java:33)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:155)
> It should not display execption and -input and error about missin -input
> option
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