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  1. Help-Desk
  2. HELP-8998

[fiware-stackoverflow] Error while trying to run a MapReduce job on FIWARE-Cosmos using Tidoop REST API

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      Description

      Created question in FIWARE Q/A platform on 13-05-2016 at 15:05
      Please, ANSWER this question AT https://stackoverflow.com/questions/37211519/error-while-trying-to-run-a-mapreduce-job-on-fiware-cosmos-using-tidoop-rest-api

      Question:
      Error while trying to run a MapReduce job on FIWARE-Cosmos using Tidoop REST API

      Description:
      I am following this guide on Github and I am not able run the example mapreduced job mentioned in Step 5.

      I am aware that this file no longer exists:

      /usr/lib/hadoop-mapreduce/hadoop-mapreduce-examples.jar

      And I am aware that the same file can now be found here:

      /usr/lib/hadoop-0.20/hadoop-examples-0.20.2-cdh3u6.jar

      So I form my call as below:

      curl -v -X POST "http://computing.cosmos.lab.fiware.org:12000/tidoop/v1/user/$user/jobs" -d '

      {"jar":"/usr/lib/hadoop-0.20/hadoop-examples-0.20.2-cdh3u6.jar","class_name":"WordCount","lib_jars":"/usr/lib/hadoop-0.20/hadoop-examples-0.20.2-cdh3u6.jar","input":"testdir","output":"testoutput"}

      ' -H "Content-Type: application/json" -H "X-Auth-Token: $TOKEN"

      The input directory exists in my hdfs user space and there is a file called testdata.txt inside it. The testoutput folder does not exist in my hdfs user space since I know it creates problems.

      When I execute this curl command, the error I get is

      {"success":"false","error":1}

      which is not very descriptive. Is there something I am missing here?

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        2017-05-22 15:14|CREATED monitor | # answers= 1, accepted answer= True

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        2017-05-22 18:10|UPDATED status: transition Answer| # answers= 1, accepted answer= True

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