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From quanta <quanta.li...@gmail.com>
Subject Does Hadoop 0.20.205 and Ganglia 3.1.7 compatible with each other ?
Date Thu, 14 Jun 2012 05:23:19 GMT
Hi Varun Kapoor,

I've been trying to debug but unfortunately, I get the "No stack."
message from the gdb.
Here're the details:

  * Hadoop: 1.0
  * Ganglia: 3.1.7


    # gdb /usr/sbin/gmetad
    GNU gdb (GDB) CentOS (7.0.1-42.el5.centos)
    Copyright (C) 2009 Free Software Foundation, Inc.
    License GPLv3+: GNU GPL version 3 or later
    <http://gnu.org/licenses/gpl.html>
    This is free software: you are free to change and redistribute it.
    There is NO WARRANTY, to the extent permitted by law.  Type "show
    copying"
    and "show warranty" for details.
    This GDB was configured as "x86_64-redhat-linux-gnu".
    For bug reporting instructions, please see:
    <http://www.gnu.org/software/gdb/bugs/>...
    Reading symbols from /usr/sbin/gmetad...(no debugging symbols
    found)...done.
    (gdb) r --conf=/etc/ganglia/gmetad.conf
    Starting program: /usr/sbin/gmetad --conf=/etc/ganglia/gmetad.conf
    [Thread debugging using libthread_db enabled]
    Detaching after fork from child process 6783.

    Program exited normally.


Wait for gmetad crash with following error in /var/log/messages:

    /usr/sbin/gmetad[6784]: *** buffer overflow detected ***:
    /usr/sbin/gmetad terminated


Go back to the (gdb) prompt:

    (gdb) bt
    No stack.
    (gdb) info locals
    No frame selected.


It sounds like gmetad catch the exception in the itself and (gdb) cannot
get any information.

I'll trying apply your patch for gmetad and let you know if it works.

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