Shreya
There are multiple ways to debug map reduce programs. I found comfortable
using the jobtracker web UI. You can your job tracker web UI at
http://<server ip>:50030/jobtracker.jsp
Open it in a browser.
There you can find the running,failed and retired jobs. You can drill down on
any job to task tracker log levels from there.
Mostly I get the root cause of my job failures from there.
Hope it helps
Regards
Bejoy K S
-----Original Message-----
From: <[email protected]>
Date: Thu, 15 Sep 2011 09:39:23
To: <[email protected]>
Reply-To: [email protected]
Subject: Debugging Mapreduce programs
Hi
Can we use sysouts in java to debug MR programs.
Where would those sysouts be printed?
What would be the best way to debug a remote system where I have access
to the machine only through putty.
Regards
Shreya
This e-mail and any files transmitted with it are for the sole use of the
intended recipient(s) and may contain confidential and privileged information.
If you are not the intended recipient, please contact the sender by reply
e-mail and destroy all copies of the original message.
Any unauthorised review, use, disclosure, dissemination, forwarding, printing
or copying of this email or any action taken in reliance on this e-mail is
strictly
prohibited and may be unlawful.
