FAQ
Hi,

it is probably described somewhere in the manuals, but


1. Where are the log files, especially those that show my
System.out.println() and errors; and
2. Do I need to log in to every machine on the cluster?

Thank you,
Mark

Search Discussions

  • Siddu at Nov 27, 2009 at 4:44 am

    On Fri, Nov 27, 2009 at 6:28 AM, Mark Kerzner wrote:

    Hi,

    it is probably described somewhere in the manuals, but


    1. Where are the log files, especially those that show my
    System.out.println() and errors; and
    Look at the logs directory ...
    2. Do I need to log in to every machine on the cluster?
    Try the WEB UI interface though i am not sure
    Thank you,
    Mark


    --
    Regards,
    ~Sid~
    I have never met a man so ignorant that i couldn't learn something from him
  • Mark Kerzner at Nov 27, 2009 at 4:53 am
    Thank you, that pretty much does it, the logs on EC2 are in /mnt/hadoop/logs
    On Thu, Nov 26, 2009 at 10:43 PM, Siddu wrote:
    On Fri, Nov 27, 2009 at 6:28 AM, Mark Kerzner wrote:

    Hi,

    it is probably described somewhere in the manuals, but


    1. Where are the log files, especially those that show my
    System.out.println() and errors; and
    Look at the logs directory ...
    2. Do I need to log in to every machine on the cluster?
    Try the WEB UI interface though i am not sure
    Thank you,
    Mark


    --
    Regards,
    ~Sid~
    I have never met a man so ignorant that i couldn't learn something from him
  • Jeff Hammerbacher at Nov 29, 2009 at 5:41 pm
    Hey,

    If you're running Cloudera's Distribution for Hadoop (CDH) and looking for
    log files, you may find the following blog post useful:
    http://www.cloudera.com/blog/2009/09/15/apache-hadoop-log-files-where-to-find-them-in-cdh-and-what-info-they-contain/
    .

    Regards,
    Jeff
    On Thu, Nov 26, 2009 at 8:52 PM, Mark Kerzner wrote:

    Thank you, that pretty much does it, the logs on EC2 are in
    /mnt/hadoop/logs
    On Thu, Nov 26, 2009 at 10:43 PM, Siddu wrote:

    On Fri, Nov 27, 2009 at 6:28 AM, Mark Kerzner <markkerzner@gmail.com>
    wrote:
    Hi,

    it is probably described somewhere in the manuals, but


    1. Where are the log files, especially those that show my
    System.out.println() and errors; and
    Look at the logs directory ...
    2. Do I need to log in to every machine on the cluster?
    Try the WEB UI interface though i am not sure
    Thank you,
    Mark


    --
    Regards,
    ~Sid~
    I have never met a man so ignorant that i couldn't learn something from him
  • Mark Kerzner at Nov 29, 2009 at 5:57 pm
    Thank you!
    On Sun, Nov 29, 2009 at 11:40 AM, Jeff Hammerbacher wrote:

    Hey,

    If you're running Cloudera's Distribution for Hadoop (CDH) and looking for
    log files, you may find the following blog post useful:

    http://www.cloudera.com/blog/2009/09/15/apache-hadoop-log-files-where-to-find-them-in-cdh-and-what-info-they-contain/
    .

    Regards,
    Jeff
    On Thu, Nov 26, 2009 at 8:52 PM, Mark Kerzner wrote:

    Thank you, that pretty much does it, the logs on EC2 are in
    /mnt/hadoop/logs
    On Thu, Nov 26, 2009 at 10:43 PM, Siddu wrote:

    On Fri, Nov 27, 2009 at 6:28 AM, Mark Kerzner <markkerzner@gmail.com>
    wrote:
    Hi,

    it is probably described somewhere in the manuals, but


    1. Where are the log files, especially those that show my
    System.out.println() and errors; and
    Look at the logs directory ...
    2. Do I need to log in to every machine on the cluster?
    Try the WEB UI interface though i am not sure
    Thank you,
    Mark


    --
    Regards,
    ~Sid~
    I have never met a man so ignorant that i couldn't learn something from him

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groupcommon-user @
categorieshadoop
postedNov 27, '09 at 12:58a
activeNov 29, '09 at 5:57p
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websitehadoop.apache.org...
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