You can enable log-aggregation where-by your application logs will be uploaded to HDFS.
Configurations from http://hadoop.apache.org/docs/r2.0.4-alpha/hadoop-project-dist/hadoop-common/ClusterSetup.html which are relevant are:
yarn.log-aggregation-enable -> true
yarn.nodemanager.remote-app-log-dir -> /logs (directory on hdfs which will need to be created before you start your cluster)
On Jun 6, 2013, at 11:10 AM, John Lilley wrote:
> Do tasks that spawn from a YARN AM have a default working directory? Does stdout/stderr get captured anywhere by default?
> I ask because I am setting up tests with the “distributed shell” AM and want to know if basic commands (e.g. ls) will send stdout/stderr somewhere I can see at the end.
Arun C. Murthy