Hi there, I am trying to customize the log format of containers, as a first step I have tried using a containter-log4j.properties with a different value for log4j.appender.CLA.layout.ConversionPattern located in the container's classpath. Tthe result is that the syslog file is written to:
/mnt/var/lib/hadoop/tmp/nm-local-dir/usercache/hadoop/appcache/application_1396678720329_0009/container_1396678720329_0009_01_000009/null/syslog instead of the configured yarn.app.mapreduce.container.log.dir that is specified in the cmdline as : -Dyarn.app.container.log.dir=/mnt/var/log/hadoop/userlogs/application_1396678720329_0009/container_1396678720329_0009_01_000009 Additionally I can see that in Hadoop 2.2.0 the log4j.configuration=container-log4j.properties is set in MRApps.addLog4jSystemProperties() and cannot be modified: http://grepcode.com/file/repo1.maven.org/maven2/org.apache.hadoop/hadoop-mapreduce-client-common/2.2.0/org/apache/hadoop/mapreduce/v2/util/MRApps.java#457 Do you have any idea on how to possibly customize this configuration file? Thanks -- Federico Baldo
