MapReduce Forum

Streaming Map Reduce Job Fails with Sub Process Error Code 126

  • #44879
    Varun Gupta
    Participant

    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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  • #44880
    runeetv
    Member

    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.

    #44886
    Varun Gupta
    Participant

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

    #45310
    Helen David
    Member

    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

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