Hadoop with -jvm when EUID 0

[Mohit Anchlia]

Is there any specific reason for this logic in hadoop file under bin
where it checks for EUID? Whenever I start-dfs.sh it goes in "-jvm
server" if block and my jvm doesn't support that option.


elif [ "$COMMAND" = "datanode" ] ; then
  CLASS='org.apache.hadoop.hdfs.server.datanode.DataNode'
  if [[ $EUID -eq 0 ]]; then
    HADOOP_OPTS="$HADOOP_OPTS -jvm server $HADOOP_DATANODE_OPTS"
  else
    HADOOP_OPTS="$HADOOP_OPTS -server $HADOOP_DATANODE_OPTS"
  fi