Default Sandbox 2.0 Location for Job Logs

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This topic contains 2 replies, has 2 voices, and was last updated by  Miguel Paraz 1 year, 5 months ago.

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  • #45902

    Miguel Paraz
    Member

    Hi,
    I’m learning Hadoop programming using Sandbox 2.0.
    I’m trying out some MapReduce jobs and need to see the output of my logs.

    I’m logging using Apache commons logging – using LOG.info level since that’s what I see as default in /etc/hadoop/log4j.properties:
    hadoop.root.logger=INFO,console

    I couldn’t find where the log entries are written. Where do they go?

    Thanks!
    Miguel

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  • #45907

    Miguel Paraz
    Member

    Thanks Dave! I have seen the logs I am looking for.

    cheers
    Miguel

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    #45906

    Dave
    Moderator

    Hi Miguel,

    In 2.0 they are stored in /var/log/hadoop-yarn/yarn but this is for the nodemanager and resourcemanager
    The logs are configured to be stored in HDFS under /app-logs however you can pull these out if you know what the applicationId is (you should see this at the start of your job)
    You can run yarn logs -applicationId insert.application.id.here >> myfile.txt

    then you can look in myfile.txt for the yarn logs

    Thanks

    Dave

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