yarn logs -am should provide an option to fetch all the log files

From Gopal Vijayaraghavan -

Trying to collect a hanging Tez AM logs, by killing the container and running yarn logs -applicationId application_1437098194051_0178 -am ALL

The output contains only one log file, which does not contain any of the actual execution logs, only the initialization logs.

From YARN-3347, I note that

// if we do not specify the value for CONTAINER_LOG_FILES option,
// we will only output syslog

This means that the person calling the yarn logs command has to list it out like this, to collect logs

yarn logs -applicationId application_1437098194051_0178 -am ALL -logFiles \
syslog_dag_1437098194051_0178_2_post,\
dag_1437098194051_0178_2-tez-dag.pb.txt,\
syslog_dag_1437098194051_0178_2,\
syslog_dag_1437098194051_0178_1_post,\
syslog_dag_1437098194051_0178_1,\
syslog,\
stdout,\
stderr,\
dag_1437098194051_0178_2.dot,\
dag_1437098194051_0178_1.dot,\
dag_1437098194051_0178_1-tez-dag.pb.txt