下载网址：
http://mirror.bit.edu.cn/apache/
资料网址
http://hadoop.apache.org/docs/
节点规划：
10.10.1.131 hadoop1
10.10.1.132 hadoop2
10.10.1.133 hadoop3
10.10.1.134 dog
10.10.1.135 cat
10.10.1.136 gangster
一、解压安装
在主节点上做
验证JDK是否安装
[root@hadoop1 ~]# java -version
java version "1.7.0_09-icedtea"
OpenJDK Runtime Environment (rhel-2.3.4.1.el6_3-x86_64)
OpenJDK 64-Bit Server VM (build 23.2-b09, mixed mode)
验证SSH是否安装
[root@hadoop1 ~]# ssh -version
OpenSSH_5.3p1, OpenSSL 1.0.0-fips 29 Mar 2010
Bad escape character 'rsion'.
各节点上都做
[root@hadoop1 ~]#vi /etc/hosts
10.10.1.131 hadoop1
10.10.1.132 hadoop2
10.10.1.133 hadoop3
10.10.1.134 dog
10.10.1.135 cat
10.10.1.136 gangster
[root@hadoop1 ~]# useradd hadoop
[root@hadoop1 ~]# passwd hadoop
[root@hadoop1 ~]# vi /etc/sysconfig/iptables
-A INPUT -s 10.10.1.131 -j ACCEPT
-A INPUT -s 10.10.1.132 -j ACCEPT
-A INPUT -s 10.10.1.133 -j ACCEPT
-A INPUT -s 10.10.1.170 -j ACCEPT
-A INPUT -s 10.10.1.171 -j ACCEPT
-A INPUT -s 10.10.1.172 -j ACCEPT
二、安装hadoop
把下载的hadoop-0.20.2.tar.gz文件上传到/home/hadoop目录下
[hadoop@hadoop1 ~]$ tar xzvf hadoop-0.20.2.tar.gz
-rw-r--r--. 1 hadoop hadoop 44575568 Feb 16 21:34 hadoop-0.20.2.tar.gz
[hadoop@hadoop1 ~]$ cd hadoop-0.20.2
[hadoop@hadoop1 hadoop-0.20.2]$ ll
total 4872
drwxr-xr-x. 2 hadoop hadoop 4096 Feb 16 21:37 bin
-rw-rw-r--. 1 hadoop hadoop 74035 Feb 19 2010 build.xml
drwxr-xr-x. 4 hadoop hadoop 4096 Feb 19 2010 c++
-rw-rw-r--. 1 hadoop hadoop 348624 Feb 19 2010 CHANGES.txt
drwxr-xr-x. 2 hadoop hadoop 4096 Feb 16 21:37 conf
drwxr-xr-x. 13 hadoop hadoop 4096 Feb 19 2010 contrib
drwxr-xr-x. 7 hadoop hadoop 4096 Feb 16 21:37 docs
-rw-rw-r--. 1 hadoop hadoop 6839 Feb 19 2010 hadoop-0.20.2-ant.jar
-rw-rw-r--. 1 hadoop hadoop 2689741 Feb 19 2010 hadoop-0.20.2-core.jar
-rw-rw-r--. 1 hadoop hadoop 142466 Feb 19 2010 hadoop-0.20.2-examples.jar
-rw-rw-r--. 1 hadoop hadoop 1563859 Feb 19 2010 hadoop-0.20.2-test.jar
-rw-rw-r--. 1 hadoop hadoop 69940 Feb 19 2010 hadoop-0.20.2-tools.jar
drwxr-xr-x. 2 hadoop hadoop 4096 Feb 16 21:37 ivy
-rw-rw-r--. 1 hadoop hadoop 8852 Feb 19 2010 ivy.xml
drwxr-xr-x. 5 hadoop hadoop 4096 Feb 16 21:37 lib
drwxr-xr-x. 2 hadoop hadoop 4096 Feb 16 21:37 librecordio
-rw-rw-r--. 1 hadoop hadoop 13366 Feb 19 2010 LICENSE.txt
-rw-rw-r--. 1 hadoop hadoop 101 Feb 19 2010 NOTICE.txt
-rw-rw-r--. 1 hadoop hadoop 1366 Feb 19 2010 README.txt
drwxr-xr-x. 15 hadoop hadoop 4096 Feb 16 21:37 src
drwxr-xr-x. 8 hadoop hadoop 4096 Feb 19 2010 webap
三、配置主节点hadoop用户无密码访问从节点
在MASTER节点上生成MASTER节点的ssh密钥对
[root@hadoop1 ~]#su - hadoop
[hadoop@hadoop1 ~]$ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/hadoop/.ssh/id_rsa):
Created directory '/home/hadoop/.ssh'.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/hadoop/.ssh/id_rsa.
Your public key has been saved in /home/hadoop/.ssh/id_rsa.pub.
The key fingerprint is:
b9:5c:48:74:25:33:ac:9f:11:c9:77:5e:02:43:3b:ba hadoop@hadoop1.cfzq.com
The key's randomart image is:
+--[ RSA 2048]----+
| .o=+=. |
| . .=+.oo .|
| .. ooo o |
| ..o.. .. |
| S.oo |
| . oo. |
| o E |
| |
| |
+-----------------+
把公钥拷贝到各SLAVE节点上
[hadoop@hadoop1 .ssh]$ scp id_rsa.pub hadoop@hadoop2:~/master-key
The authenticity of host 'hadoop2 (10.10.1.132)' can't be established.
RSA key fingerprint is f9:47:3e:59:39:10:cd:7d:a4:5c:0d:ab:df:1f:14:21.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'hadoop2,10.10.1.132' (RSA) to the list of known hosts.
hadoop@hadoop2's password:
id_rsa.pub 100% 405 0.4KB/s 00:00
[hadoop@hadoop1 .ssh]$ scp id_rsa.pub hadoop@hadoop3:~/master-key
The authenticity of host 'hadoop3 (10.10.1.133)' can't be established.
RSA key fingerprint is f9:47:3e:59:39:10:cd:7d:a4:5c:0d:ab:df:1f:14:21.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'hadoop3,10.10.1.133' (RSA) to the list of known hosts.
hadoop@hadoop3's password:
id_rsa.pub 100% 405 0.4KB/s 00:00
[hadoop@hadoop1 .ssh]$ scp id_rsa.pub hadoop@cat:~/master-key
The authenticity of host 'cat (10.10.1.171)' can't be established.
RSA key fingerprint is f9:47:3e:59:39:10:cd:7d:a4:5c:0d:ab:df:1f:14:21.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'cat,10.10.1.171' (RSA) to the list of known hosts.
hadoop@cat's password:
id_rsa.pub 100% 405 0.4KB/s 00:00
[hadoop@hadoop1 .ssh]$ scp id_rsa.pub hadoop@dog:~/master-key
The authenticity of host 'dog (10.10.1.170)' can't be established.
RSA key fingerprint is f9:47:3e:59:39:10:cd:7d:a4:5c:0d:ab:df:1f:14:21.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'dog,10.10.1.170' (RSA) to the list of known hosts.
hadoop@dog's password:
id_rsa.pub 100% 405 0.4KB/s 00:00
[hadoop@hadoop1 .ssh]$ scp id_rsa.pub hadoop@gangster:~/master-key
The authenticity of host 'gangster (10.10.1.172)' can't be established.
RSA key fingerprint is f9:47:3e:59:39:10:cd:7d:a4:5c:0d:ab:df:1f:14:21.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'gangster,10.10.1.172' (RSA) to the list of known hosts.
hadoop@gangster's password:
id_rsa.pub 100% 405 0.4KB/s 00:00
在各SLAVE节点上：
[hadoop@hadoop2 ~]$ mkdir .ssh
[hadoop@hadoop2 ~]$ chmod 700 .ssh/
[hadoop@hadoop2 ~]$ mv master-key .ssh/authorized_keys
[hadoop@hadoop2 ~]$ cd .ssh/
[hadoop@hadoop2 .ssh]$ chmod 600 authorized_keys
[hadoop@hadoop3 ~]$ mkdir .ssh
[hadoop@hadoop3 ~]$ chmod 700 .ssh/
[hadoop@hadoop3 ~]$ mv master-key .ssh/authorized_keys
[hadoop@hadoop3 ~]$ cd .ssh/
[hadoop@hadoop3 .ssh]$ chmod 600 authorized_keys
[hadoop@dog ~]$ mkdir .ssh
[hadoop@dog ~]$ chmod 700 .ssh/
[hadoop@dog ~]$ mv master-key .ssh/authorized_keys
[hadoop@dog ~]$ cd .ssh/
[hadoop@dog .ssh]$ chmod 600 authorized_keys
[hadoop@cat ~]$ mkdir .ssh
[hadoop@cat ~]$ chmod 700 .ssh/
[hadoop@cat ~]$ mv master-key .ssh/authorized_keys
[hadoop@cat ~]$ cd .ssh/
[hadoop@cat .ssh]$ chmod 600 authorized_keys
[hadoop@gangster ~]$ mkdir .ssh
[hadoop@gangster ~]$ chmod 700 .ssh/
[hadoop@gangster ~]$ mv master-key .ssh/authorized_keys
[hadoop@gangster ~]$ cd .ssh/
[hadoop@gangster .ssh]$ chmod 600 authorized_keys
在MASTER节点上测试主节点无口令访问各从节点
[hadoop@hadoop1 .ssh]$ ssh hadoop2
Last login: Sat Feb 15 19:35:21 2014 from hadoop1
[hadoop@hadoop2 ~]$ exit
logout
Connection to hadoop2 closed.
[hadoop@hadoop1 .ssh]$ ssh hadoop3
Last login: Sat Feb 15 21:57:38 2014 from hadoop1
[hadoop@hadoop3 ~]$ exit
logout
Connection to hadoop3 closed.
[hadoop@hadoop1 .ssh]$ ssh cat
Last login: Sat Feb 15 14:33:50 2014 from hadoop1
[hadoop@cat ~]$ exit
logout
Connection to cat closed.
[hadoop@hadoop1 .ssh]$ ssh dog
Last login: Sun Feb 16 20:41:19 2014 from hadoop1
[hadoop@dog ~]$ exit
logout
Connection to dog closed.
[hadoop@hadoop1 .ssh]$ ssh gangster
Last login: Sat Feb 15 18:03:45 2014 from hadoop1
[hadoop@gangster ~]$ exit
logout
Connection to gangster closed.
二、配置运行参数
几个主要参数要进行配置
1.fs.default.name
2.Hadoop.tmp.dir
3.mapred.job.tracker
4.dfs.name.dir
5.dfs.data.dir
6.dfs.http.address
[root@hadoop1 ~]# su - hadoop
[hadoop@hadoop1 ~]$ cd hadoop-0.20.2/conf/
[hadoop@hadoop1 conf]$ vi hadoop-env.sh
export JAVA_HOME=/usr/lib/jvm/java-1.7.0-openjdk.x86_64
export HADOOP_LOG_DIR=/var/log/hadoop
在各节点：
[hadoop@hadoop1 ~]# chmod 777 /var/log/hadoop
[hadoop@hadoop2 ~]# chmod 777 /var/log/hadoop
[hadoop@hadoop3 ~]# chmod 777 /var/log/hadoop
测试JAVA_HOME设置是否正确
[hadoop@hadoop1 bin]$ ./hadoop version
Hadoop 0.20.2
Subversion https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.20 -r 911707
Compiled by chrisdo on Fri Feb 19 08:07:34 UTC 2010
[hadoop@hadoop1 conf]$ vi core-site.xml
<configuration>
<property>
##配置地址和端口
<name>fs.default.name</name>
<value>hdfs://10.10.1.131:9000</value>
</property>
</configuration>
hdfs-site.xml中
dfs.http.address提供web页面显示的地址和端口默认是50070，ip是namenode的ip
dfs.data.dir是datanode机器上data数据存放的位置，没有则放到core-site.xml的tmp目录中
dfs.name.dir是namenode机器上name数据存放的位置，没有则放到core-site.xml的tmp目录中
[hadoop@hadoop1 hadoop-0.20.2]$ pwd
/home/hadoop/hadoop-0.20.2
[hadoop@hadoop1 hadoop-0.20.2]$ mkdir data
[hadoop@hadoop1 hadoop-0.20.2]$ mkdir name
[hadoop@hadoop1 hadoop-0.20.2]$ mkdir tmp
[hadoop@hadoop1 conf]$ vi hdfs-site.xml
<configuration>
<property>
<name>dfs.name.dir</name>
<value>/home/hadoop/hadoop-0.20.2/name</value>
</property>
<property>
<name>dfs.data.dir</name>
<value>/home/hadoop/hadoop-0.20.2/data</value>
</property>
<property>
<name>dfs.http.address</name>
<value>10.10.1.131:50071</value>
</property>
<property>
<name>dfs.replication</name>
<value>2</value>
<description>The actual number of relications can be specified when the file is created.</description>
</property>
</configuration>
[hadoop@hadoop1 conf]$ vi mapred-site.xml
<configuration>
<property>
<name>mapred.job.tracker</name>
<value>10.10.1.131:9001</value>
<description>The host and port that the MapReduce job tracker runs at.</description>
</property>
[hadoop@hadoop1 conf]$ vi masters
hadoop1
[hadoop@hadoop1 conf]$ vi slaves
hadoop2
hadoop3
四、向各datanodes节点复制hadoop
[hadoop@hadoop1 ~]$ pwd
/home/hadoop
[hadoop@hadoop1 ~]$ scp -r hadoop-0.20.2 hadoop2:/home/hadoop/.
[hadoop@hadoop1 ~]$ scp -r hadoop-0.20.2 hadoop3:/home/hadoop/.
五、格式化分布式文件系统
在namenode上
[hadoop@hadoop1 bin]$ pwd
/home/hadoop/hadoop-0.20.2/bin
[hadoop@hadoop1 bin]$ ./hadoop namenode -format
14/02/18 20:23:24 INFO namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = hadoop1.cfzq.com/10.10.1.131
STARTUP_MSG: args = [-format]
STARTUP_MSG: version = 0.20.2
STARTUP_MSG: build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.20 -r 911707; compiled by 'chrisdo' on Fri Feb 19 08:07:34 UTC 2010
************************************************************/
14/02/18 20:23:38 INFO namenode.FSNamesystem: fsOwner=hadoop,hadoop
14/02/18 20:23:38 INFO namenode.FSNamesystem: supergroup=supergroup
14/02/18 20:23:38 INFO namenode.FSNamesystem: isPermissionEnabled=true
14/02/18 20:23:39 INFO common.Storage: Image file of size 96 saved in 0 seconds.
14/02/18 20:23:39 INFO common.Storage: Storage directory /home/hadoop/hadoop-0.20.2/data has been successfully formatted.
14/02/18 20:23:39 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at hadoop1.cfzq.com/10.10.1.131
************************************************************/
六、启动守护进程
[hadoop@hadoop1 bin]$ pwd
/home/hadoop/hadoop-0.20.2/bin
[hadoop@hadoop1 bin]$ ./start-all.sh
starting namenode, logging to /var/log/hadoop/hadoop-hadoop-namenode-hadoop1.cfzq.com.out
hadoop3: starting datanode, logging to /var/log/hadoop/hadoop-hadoop-datanode-hadoop3.cfzq.com.out
hadoop2: starting datanode, logging to /var/log/hadoop/hadoop-hadoop-datanode-hadoop2.cfzq.com.out
hadoop1: starting secondarynamenode, logging to /var/log/hadoop/hadoop-hadoop-secondarynamenode-hadoop1.cfzq.com.out
starting jobtracker, logging to /var/log/hadoop/hadoop-hadoop-jobtracker-hadoop1.cfzq.com.out
hadoop3: starting tasktracker, logging to /var/log/hadoop/hadoop-hadoop-tasktracker-hadoop3.cfzq.com.out
hadoop2: starting tasktracker, logging to /var/log/hadoop/hadoop-hadoop-tasktracker-hadoop2.cfzq.com.out
在各节点上检查进程启动情况
[hadoop@hadoop1 bin]$ /usr/lib/jvm/java-1.7.0-openjdk.x86_64/bin/jps
30042 Jps
29736 NameNode
29885 SecondaryNameNode
29959 JobTracker
[hadoop@hadoop2 conf]$ jps
13437 TaskTracker
13327 DataNode
13481 Jps
[hadoop@hadoop3 ~]$ jps
12117 Jps
11962 DataNode
12065 TaskTracker
七、检测hadoop群集
[hadoop@hadoop1 hadoop-0.20.2]$ pwd
/home/hadoop/hadoop-0.20.2
[hadoop@hadoop1 hadoop-0.20.2]$ mkdir input
[hadoop@hadoop1 hadoop-0.20.2]$ cd input
[hadoop@hadoop1 input]$ echo "hello world" >test1.txt
[hadoop@hadoop1 input]$ echo "hello hadoop" >test2.txt
[hadoop@hadoop1 input]$ ll
total 8
-rw-rw-r--. 1 hadoop hadoop 12 Feb 18 09:32 test1.txt
-rw-rw-r--. 1 hadoop hadoop 13 Feb 18 09:33 test2.txt
把input目录下的文件拷贝到hadoop系统里面去
[hadoop@hadoop1 input]$ cd ../bin/
[hadoop@hadoop1 bin]$ pwd
/home/hadoop/hadoop-0.20.2/bin
[hadoop@hadoop1 bin]$ ./hadoop dfs -put ../input in
dfs参数：指示进行分布式文件系统的操作
-put参数：把操作系统的文件输入到分布式文件系统
../input参数：操作系统的文件目录
in参数：分布式文件系统的文件目录
[hadoop@hadoop1 bin]$ ./hadoop dfs -ls ./in/*
-rw-r--r-- 2 hadoop supergroup 12 2014-02-18 10:11 /user/hadoop/in/test1.txt
-rw-r--r-- 2 hadoop supergroup 13 2014-02-18 10:11 /user/hadoop/in/test2.txt
/user/hadoop/in表示用户hadoop的根目录下in目录，而非操作系统的目录。
-ls参数：分布式文件系统中列出目录文件
[hadoop@hadoop1 hadoop-0.20.2]$ pwd
/home/hadoop/hadoop-0.20.2
[hadoop@hadoop1 hadoop-0.20.2]$ bin/hadoop jar ../hadoop-0.20.2-examples.jar wordcount in out
14/02/18 11:15:58 INFO input.FileInputFormat: Total input paths to process : 2
14/02/18 11:15:59 INFO mapred.JobClient: Running job: job_201402180923_0001
14/02/18 11:16:00 INFO mapred.JobClient: map 0% reduce 0%
14/02/18 11:16:07 INFO mapred.JobClient: map 50% reduce 0%
14/02/18 11:16:10 INFO mapred.JobClient: map 100% reduce 0%
14/02/18 11:16:19 INFO mapred.JobClient: map 100% reduce 100%
14/02/18 11:16:21 INFO mapred.JobClient: Job complete: job_201402180923_0001
14/02/18 11:16:21 INFO mapred.JobClient: Counters: 17
14/02/18 11:16:21 INFO mapred.JobClient: Job Counters
14/02/18 11:16:21 INFO mapred.JobClient: Launched reduce tasks=1
14/02/18 11:16:21 INFO mapred.JobClient: Launched map tasks=2
14/02/18 11:16:21 INFO mapred.JobClient: Data-local map tasks=2
14/02/18 11:16:21 INFO mapred.JobClient: FileSystemCounters
14/02/18 11:16:21 INFO mapred.JobClient: FILE_BYTES_READ=55
14/02/18 11:16:21 INFO mapred.JobClient: HDFS_BYTES_READ=25
14/02/18 11:16:21 INFO mapred.JobClient: FILE_BYTES_WRITTEN=180
14/02/18 11:16:21 INFO mapred.JobClient: HDFS_BYTES_WRITTEN=25
14/02/18 11:16:21 INFO mapred.JobClient: Map-Reduce Framework
14/02/18 11:16:21 INFO mapred.JobClient: Reduce input groups=3
14/02/18 11:16:21 INFO mapred.JobClient: Combine output records=4
14/02/18 11:16:21 INFO mapred.JobClient: Map input records=2
14/02/18 11:16:21 INFO mapred.JobClient: Reduce shuffle bytes=61
14/02/18 11:16:21 INFO mapred.JobClient: Reduce output records=3
14/02/18 11:16:21 INFO mapred.JobClient: Spilled Records=8
14/02/18 11:16:21 INFO mapred.JobClient: Map output bytes=41
14/02/18 11:16:21 INFO mapred.JobClient: Combine input records=4
14/02/18 11:16:21 INFO mapred.JobClient: Map output records=4
14/02/18 11:16:21 INFO mapred.JobClient: Reduce input records=4
14/02/18 11:16:21 INFO mapred.JobClient: Reduce input records=4
jar参数：提交作业
wordount参数：功能为wordcount
in参数：原始数据位置
out参数：输出数据位置
[hadoop@hadoop1 hadoop-0.20.2]$ bin/hadoop dfs -ls
Found 4 items
drwxr-xr-x - hadoop supergroup 0 2014-02-18 09:52 /user/hadoop/in
drwxr-xr-x - hadoop supergroup 0 2014-02-18 11:16 /user/hadoop/out
[hadoop@hadoop1 hadoop-0.20.2]$ bin/hadoop dfs -ls ./out
Found 2 items
drwxr-xr-x - hadoop supergroup 0 2014-02-18 11:15 /user/hadoop/out/_logs
-rw-r--r-- 2 hadoop supergroup 25 2014-02-18 11:16 /user/hadoop/out/part-r-00000
[hadoop@hadoop1 hadoop-0.20.2]$ bin/hadoop dfs -cat ./out/part-r-00000
hadoop 1
hello 2
world 1
八、通过WEB了解hadoop的活动
[hadoop@hadoop1 bin]$ netstat -all |grep :5
getnameinfo failed
tcp 0 0 *:57195 *:* LISTEN
tcp 0 0 hadoop1:ssh 10.10.1.198:58000 ESTABLISHED
tcp 0 0 *:50030 *:* LISTEN
tcp 0 0 *:50070 *:* LISTEN
tcp 0 0 *:59420 *:* LISTEN
tcp 0 0 *:50849 *:* LISTEN
tcp 0 0 *:50090 *:* LISTEN
---监控jobtracker
http://10.10.1.131:50030/jobtracker.jsp
hadoop1 Hadoop Map/Reduce Administration
Quick Links
Scheduling Info
Running Jobs
Completed Jobs
Failed Jobs
Local Logs
State: INITIALIZING
Started: Mon Feb 17 21:33:23 CST 2014
Version: 0.20.2, r911707
Compiled: Fri Feb 19 08:07:34 UTC 2010 by chrisdo
Identifier: 201402172133
--------------------------------------------------------------------------------
Cluster Summary (Heap Size is 117.94 MB/888.94 MB)
Maps Reduces Total Submissions Nodes Map Task Capacity Reduce Task Capacity Avg. Tasks/Node Blacklisted Nodes
0 0 0 0 0 0 - 0
--------------------------------------------------------------------------------
Scheduling Information
Queue Name Scheduling Information
default N/A
--------------------------------------------------------------------------------
Filter (Jobid, Priority, User, Name)
Example: 'user:smith 3200' will filter by 'smith' only in the user field and '3200' in all fields
--------------------------------------------------------------------------------
Running Jobs
none
--------------------------------------------------------------------------------
Completed Jobs
none
--------------------------------------------------------------------------------
Failed Jobs
none
--------------------------------------------------------------------------------
Local Logs
Log directory, Job Tracker History
--------------------------------------------------------------------------------
Hadoop, 2014.
---监控HDFS
http://10.10.1.131:50070/dfshealth.jsp
NameNode 'hadoop1:9000'
Started: Mon Feb 17 12:35:22 CST 2014
Version: 0.20.2, r911707
Compiled: Fri Feb 19 08:07:34 UTC 2010 by chrisdo
Upgrades: There are no upgrades in progress.
Browse the filesystem
Namenode Logs
--------------------------------------------------------------------------------
Cluster Summary
1 files and directories, 0 blocks = 1 total. Heap Size is 117.94 MB / 888.94 MB (13%)
Configured Capacity : 0 KB
DFS Used : 0 KB
Non DFS Used : 0 KB
DFS Remaining : 0 KB
DFS Used% : 100 %
DFS Remaining% : 0 %
Live Nodes : 0
Dead Nodes : 0
There are no datanodes in the cluster
--------------------------------------------------------------------------------
NameNode Storage:
Storage Directory Type State
/tmp/hadoop-hadoop/dfs/name IMAGE_AND_EDITS Active
--------------------------------------------------------------------------------
Hadoop, 2014.