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Hortonworks Sandbox Forum

Log4j Debugging Map Redece Jobs

  • #49950
    chris palm

    I have a Map/Reduce jar with embedded with my class files and the debug level set at root.
    When I run this on an older Hadoop distribution I get log output in the job files. When I run this with the HDP2.0 sandbox I don’t see any log
    output in the logs via the console or on the file system.

    How do I get the log levels to output in the sandbox for a map/reduce java job and where should I expect them to be?

  • Author
  • #49963

    Hi Chris
    You can use System.out.println in your code. This will output to the JobHistory logs under stdout. Hope this helps


    chris palm

    Is there a way to use the Logger interface From Log4j that used to work in the earlier versions of Hadoop?

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