hdfs

#! /bin/sh
if [ "$1" = "namenode" ]
then
	start-dfs.sh
elif [ "$1" = "datanode" ]
then
	netstat -na | grep 50010 -q ;
    if [ $? -eq 1 ]
    then
        echo "next"
		wget http://hdfs/hadoop.tar.gz
		tar xvf hadoop*
		cd hadoop*
		./bin/hdfs datanode
    else
        exit
    fi
elif [ "$1" = "clearHDFS" ]
then
	sudo rm -rf /app/hadoop/tmp
	sudo mkdir -p /app/hadoop/tmp
	sudo chown node /app/hadoop/tmp
fi