[hadoop@hadoop-master hadoop-2.7.5]$ sbin/stop-all.sh
This script is Deprecated. Instead use stop-dfs.sh and stop-yarn.sh
Stopping namenodes on [hadoop-master]
hadoop-master: stopping namenode
slave1: stopping datanode
Stopping secondary namenodes [0.0.0.0]
0.0.0.0: stopping secondarynamenode
stopping yarn daemons
stopping resourcemanager
slave1: stopping nodemanager
no proxyserver to stop
2.5.8 创建HDFS
# hdfs dfs -mkdir /user
# hdfs dfs -mkdir /user/test22
2.5.9 拷贝input文件到HDFS目录下
# hdfs dfs -put etc/hadoop/*.sh /user/test22/input
查看
# hdfs dfs -ls /user/test22/input
2.5.10 执行hadoop job
统计单词的例子，此时的output是hdfs中的目录，hdfs dfs -ls可查看
# hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.5.jar wordcount /user/test22/input output
确认执行结果
# hdfs dfs -cat output/*
2.5.11 查看错误日志
注：日志在salve1的*.log中而不是在master或*.out中
2.6 Q&A
1. hdfs dfs -put 报错如下，解决关闭master&salve防火墙
hdfs.DFSClient: Exception in createBlockOutputStream
java.net.NoRouteToHostException: No route to host