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~>cat phase.json 
[       
    {     
        "Name": "MapReduce Step 1: Run Phase",
        "ActionOnFailure": "CANCEL_AND_WAIT",
        "HadoopJarStep": {
            "Jar": "/home/hadoop/contrib/streaming/hadoop-streaming.jar",
                "Args": [
                    "-input",     "s3n://sagetest-YourUsername/input/phaseInput.txt",
                    "-output",    "s3n://sagetest-YourUsername/output/phaseTryNumber1phaseTry1",
                    "-mapper",    "s3n://sagetest-YourUsername/scripts/phaseMapper.sh",
                    "-reducer",   "s3n://sagetest-YourUsername/scripts/echoReducer.sh",
                    "-cacheFile", "s3n://sagetest-YourUsername/scripts/phase#phase",
                    "-jobconf",   "mapred.map.tasks=1",
                    "-jobconf",   "mapred.reduce.tasks=1",
                ]
            }
    }
]

~>/work/platform/bin/elastic-mapreduce-cli/elastic-mapreduce --credentials
~/$USER-credentials.json --create --num-instances=1 --master-instance-type=m1.large --name phaseTry1  --json phase.json --name phaseTry1

Created job flow j-GA47B7VD991Q

~>/work/platform/bin/elastic-mapreduce-cli/elastic-mapreduce --credentials
~/$USER-credentials.json --list --jobflow j-GA47B7VD991Q
--list

j-GA47B7VD991Q     RUNNING        ec2-174-129-134-200.compute-1.amazonaws.com       filesysTry1
   RUNNING        MapReduce Step 1: Run Phase     

~>/work/platform/bin/elastic-mapreduce-cli/elastic-mapreduce --credentials ~/$USER-credentials.json --json phase.json --jobflow j-GA47B7VD991Q --json phase.json 
Added jobflow steps