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From "Jeff Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-3755) Log the command of launching containers
Date Tue, 02 Jun 2015 05:26:17 GMT
Jeff Zhang created YARN-3755:
--------------------------------

             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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