[jira] [Created] (YARN-1329) yarn-config.sh overwrites YARN_CONF_DIR indiscriminately

["Aaron Gottlieb (JIRA)" <ji...@apache.org>]

Aaron Gottlieb created YARN-1329:
------------------------------------

             Summary: yarn-config.sh overwrites YARN_CONF_DIR indiscriminately 
                 Key: YARN-1329
                 URL: https://issues.apache.org/jira/browse/YARN-1329
             Project: Hadoop YARN
          Issue Type: Bug
          Components: nodemanager, resourcemanager
            Reporter: Aaron Gottlieb


The script yarn-daemons.sh calls {code}${HADOOP_LIBEXEC_DIR}/yarn-config.sh{code}

yarn-config.sh overwrites any previously set value of environment variable YARN_CONF_DIR starting at line 40:
{code:title=yarn-config.sh|borderStyle=solid}
#check to see if the conf dir is given as an optional argument
if [ $# -gt 1 ]
then
    if [ "--config" = "$1" ]
	  then
	      shift
	      confdir=$1
	      shift
	      YARN_CONF_DIR=$confdir
    fi
fi
 
# Allow alternate conf dir location.
export YARN_CONF_DIR="${HADOOP_CONF_DIR:-$HADOOP_YARN_HOME/conf}"
{code}

The last line should check for the existence of YARN_CONF_DIR first.
{code}
DEFAULT_CONF_DIR="${HADOOP_CONF_DIR:-$YARN_HOME/conf}"
export YARN_CONF_DIR="${YARN_CONF_DIR:-$DEFAULT_CONF_DIR}"
{code}



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