Jeff Zhang created YARN-3755:
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Summary: Log the command of launching containers
Key: YARN-3755
URL: https://issues.apache.org/jira/browse/YARN-3755
Project: Hadoop YARN
Issue Type: Improvement
Reporter: Jeff Zhang
In the resource manager, yarn would log the command for launching AM, this is
very useful. But there's no such log in the NN log for launching containers. It
would be difficult to diagnose when containers fails to launch due to some
issue in the commands. Although use can look at the commands in the container
launch script file, this is an internal things of yarn, usually user don't know
that. In user's perspective, they only know what command they specify when
building yarn application.
{code}
2015-06-01 16:06:42,245 INFO
org.apache.hadoop.yarn.server.resourcemanager.amlauncher.AMLauncher: Command to
launch container container_1433145984561_0001_01_000001 : $JAVA_HOME/bin/java
-server -Djava.net.preferIPv4Stack=true -Dhadoop.metrics.log.level=WARN
-Xmx1024m -Dlog4j.configuratorClass=org.apache.tez.common.TezLog4jConfigurator
-Dlog4j.configuration=tez-container-log4j.properties
-Dyarn.app.container.log.dir=<LOG_DIR> -Dtez.root.logger=info,CLA
-Dsun.nio.ch.bugLevel='' org.apache.tez.dag.app.DAGAppMaster 1><LOG_DIR>/stdout
2><LOG_DIR>/stderr
{code}
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