Home Forums MapReduce Streaming Map Reduce Job Fails with Sub Process Error Code 126

This topic contains 3 replies, has 3 voices, and was last updated by  Helen David 1 year ago.

  • Creator
  • #44879

    Varun Gupta

    am working with Hortonworks Sandbox 2.0 at Windows 8.1. When I try to run a simple map reduce job for word count example, I receive this error. Can someone help me to understand it, where I am going wrong.

    org.apache.hadoop.mapred.TaskAttemptListenerImpl: Progress of TaskAttempt attempt_1386191005249_0006_m_000001_0 is : 0.0

    2013-12-04 14:00:25,439 FATAL [IPC Server handler 9 on 50142] org.apache.hadoop.mapred.TaskAttemptListenerImpl:

    Task: attempt_1386191005249_0006_m_000000_0 – exited : java.lang.RuntimeException: PipeMapRed.waitOutputThreads(): subprocess failed with code 126

    at org.apache.hadoop.streaming.PipeMapRed.waitOutputThreads(PipeMapRed.java:320)
    at org.apache.hadoop.streaming.PipeMapRed.mapRedFinished(PipeMapRed.java:533)
    at org.apache.hadoop.streaming.PipeMapper.close(PipeMapper.java:130)
    at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:61)
    at org.apache.hadoop.streaming.PipeMapRunner.run(PipeMapRunner.java:34)
    at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:429)
    at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
    at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:162)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:396)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
    at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:157)

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  • Author
  • #45310

    Helen David

    Error 126 is an application runtime error. Usually this error occurs while an application tries to regain the information from a specific DLL file but this file does not exist anymore on your computer.

    – Recover missing or deleted DLL File
    – Expand DLL file image from Windows Installation disc
    – Repair Windows Registry with PC Fresher
    – Register again the DLL File
    – Delete Registry entry related to SQL Server
    – Uninstall and reinstall the concerned program

    Hope it will works for you. Thanks


    Varun Gupta

    In my scenario, I am only testing basic word count example. Can you please help in how to print to stderr logs?



    This usually happens if you are not consuming all the input inside your streaming mapper script. Is it possible that your mapper script is exiting before consuming all input? You can try to print some logs to stderr.

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