On Nov 24, 2008, at 9:49 AM, Steve Loughran wrote:
Scott Whitecross wrote:
Thanks Brian. So you have had luck w/ log4j?
We grab logs off machines by not using lo4j and routing to our own
logging infrastructure that can feed events to other boxes via RMI
and queues. This stuff slots in
Scott Whitecross wrote:
Thanks Brian. So you have had luck w/ log4j?
We grab logs off machines by not using lo4j and routing to our own
logging infrastructure that can feed events to other boxes via RMI and
queues. This stuff slots in behind commons-logging, with a custom
commons-logging
I've looked around for a while, but it seems there isn't a way to log
from Hadoop, without going through the logs/userlogs/ and the
'attempt' directories? That would mean that for logging I'm
restricted to writing to System.out and System.err, then collecting
via scripts?
Thanks.
Thanks Brian. I've played w/ the log4j.properties a bit, and haven't
had any luck. Can you share how youve setup log4j? I am probably
missing the obvious, but here is what I setup:
log4j.logger.com.mycompany.hadoop=DEBUG,DX,console
Thanks Brian. So you have had luck w/ log4j?
I haven't tried local mode. I will try it tonight and see how it goes
for quick debugging. More so, I wanted to be able to easily log and
watch events on a cluster, rather then digging through all the hadoop
logging levels. I've also read
Hello,
I'm very sorry to trouble you, I'm developing a MapReduce
Application, And I can get Log.INFO in InputFormat ,but In Mapper or Reducer
, I can't get anything
. And Now an error occured in the reduce stage. Because the code is a little
complicated, I can't find where is the mistake
Have you seen this:
http://wiki.apache.org/hadoop/HowToDebugMapReducePrograms
Alex
On Tue, Nov 11, 2008 at 6:03 PM, ZhiHong Fu [EMAIL PROTECTED] wrote:
Hello,
I'm very sorry to trouble you, I'm developing a MapReduce
Application, And I can get Log.INFO in InputFormat ,but In Mapper
