Hi Harsh,
There is only three warnnings in stderr
*stderr logs*
log4j:WARN No appenders could be found for logger
(org.apache.hadoop.mapred.Child).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig
for more info.
On
actuall these are all logs in the stderr, and stdout is empty
On Fri, Jan 3, 2014 at 4:12 PM, Azuryy Yu azury...@gmail.com wrote:
Hi Harsh,
There is only three warnnings in stderr
*stderr logs*
log4j:WARN No appenders could be found for logger
(org.apache.hadoop.mapred.Child).
Hi,
Our prod cluster met some issues recently,
All map tasks finished successfully, but reduce task hanged.
but It's not happened on all TaskTrackers, only sometimes. we used
mapred-1.0.4
There is 0.0% reduce copy forever until kill task manually.
reduce logs on the TaskTracker:
Add addtional:
Our MR version is 1.2.1, not 1.0.4
There is no useful information in the JT log.
On Fri, Jan 3, 2014 at 12:20 PM, Azuryy Yu azury...@gmail.com wrote:
Hi,
Our prod cluster met some issues recently,
All map tasks finished successfully, but reduce task hanged.
but It's not
Does the Reduce task log (of attempt_201312201200_34795_r_00_0)
show any errors in trying to communicate with the various TaskTrackers
in trying to obtain the data?
On Fri, Jan 3, 2014 at 9:54 AM, Azuryy Yu azury...@gmail.com wrote:
Add addtional:
Our MR version is 1.2.1, not 1.0.4
There
Hi Harsh,
Thanks.
There is no any error logs for attempt_201312201200_34795_r_00_0 in the
tasktracker log. only '0.0% reduce copy '
I configured all hosts in all slaves and master.
This job has only one reduce. it hanged. but I configured everybody's max
job running to '1' in the Fair
In detail:
'and these people's job never hanged...'
these people's map and reduce tasks never hanged.
On Fri, Jan 3, 2014 at 1:46 PM, Azuryy Yu azury...@gmail.com wrote:
Hi Harsh,
Thanks.
There is no any error logs for attempt_201312201200_34795_r_00_0 in
the tasktracker log. only
