hdp

#!/bin/bash

hosts=('larkbay' 'orcabay')

if [ $# -eq 0 ]; then
	echo "[usage]hadoop <format|start|stop|destroy>"
	exit -1
fi

if [ $1 == "format" ]; then
	echo "format hdfs..."
	$HADOOP_HOME/bin/hdfs namenode -format
elif [ $1 == "start" ]; then
    echo "hadoop cluster start ..."
	$HADOOP_HOME/sbin/start-dfs.sh
	$HADOOP_HOME/sbin/start-yarn.sh
elif [ $1 == "stop" ]; then
    echo "hadoop cluster stop ..."
	$HADOOP_HOME/sbin/stop-dfs.sh
	$HADOOP_HOME/sbin/stop-yarn.sh
elif [ $1 == "destroy" ]; then
    echo "destroy hadoop cluster ..."
	$HADOOP_HOME/sbin/stop-dfs.sh
	$HADOOP_HOME/sbin/stop-yarn.sh
	rm -rf $HOME/data/hadoop/*
	rm -rf $HOME/logs/hadoop/*
	for host in ${hosts[@]}; do
    	echo "destroy node $host ..."
		ssh alex@$host "rm -rf $HOME/data/hadoop/*"
		ssh alex@$host "rm -rf $HOME/logs/hadoop/*"
	done
else
	echo "invalid command"
fi