学习Hbase之quick start

1.2. Quick Start

     Loopback IP

     /etc/hosts should look something like this:
      

vi /etc/hosts

127.0.0.1 localhost
127.0.0.1 ubuntu.ubuntu-domain ubuntu

1.2.1. Download and unpack the latest stable release.（下载和解压稳定版本）

$ tar xfvz hbase-0.94.3-security.tar.gz
$ cd hbase-0.94.3-security

        安装之前，编辑 conf/hbase-site.xml.其中hbase.rootdir，是Hbase写数据的目录
                                           其中hbase.zookeeper.property.dataDir，是ZooKeeper写数据的目录

hbase.rootdir
/data/hbase


hbase.zookeeper.property.dataDir
/data/zookeeper

1.2.2. Start HBase

[root@ZSDDB8 hbase-0.94.3-security]# ./bin/start-hbase.sh
starting master, logging to /root/hbase-0.94.3-security/bin/../logs/hbase-root-master-ZSDDB8.out

这样就算开启了单实例的HBase

         Is java Installed?可以查看http://blog.chinaunix.net/space.php?uid=26446098&do=blog&id=3438622   java7安装方式

1.2.3. Shell Exercises

通过shell连接HBASE

[root@ZSDDB8 hbase-0.94.3-security]# ./bin/hbase shell
HBase Shell; enter 'help' for list of supported commands.
Type "exit" to leave the HBase Shell
Version 0.94.3, r1408904, Wed Nov 14 16:41:36 UTC 2012

hbase(main):001:0>

创建一个表为test且一个列集合为cf。通过list 'test'验证它的创建然后插入一些数据

hbase(main):003:0> create 'test', 'cf'
0 row(s) in 1.2200 seconds
hbase(main):002:0> list 'test'
TABLE
test
1 row(s) in 0.0170 seconds
1 row(s) in 0.0550 seconds
hbase(main):004:0> put 'test', 'row1', 'cf:a', 'value1'
0 row(s) in 0.0560 seconds
hbase(main):005:0> put 'test', 'row2', 'cf:b', 'value2'
0 row(s) in 0.0370 seconds
hbase(main):006:0> put 'test', 'row3', 'cf:c', 'value3'
0 row(s) in 0.0450 seconds

通过执行scan 命令验证刚插入的数据

hbase(main):006:0> scan 'test'
ROW                                     COLUMN+CELL
row1                                   column=cf:a, timestamp=1355386368983, value=value1
row2                                   column=cf:b, timestamp=1355386374028, value=value2
row3                                   column=cf:c, timestamp=1355386377745, value=value3
3 row(s) in 0.0600 seconds

得到一行的数据

hbase(main):007:0> get 'test', 'row1'
COLUMN                                  CELL
cf:a                                   timestamp=1355386368983, value=value1
1 row(s) in 0.0330 seconds

现在disable然后drop掉你的表，就可以清除上面你做的所有操作

hbase(main):008:0> disable 'test'
0 row(s) in 2.0730 seconds

hbase(main):009:0> drop 'test'
0 row(s) in 0.1100 seconds

退出

hbase(main):013:0> exit

1.2.4. Stopping HBase

执行stop-hbase.sh关闭HBase

$ ./bin/stop-hbase.sh
[root@ZSDDB8 hbase-0.94.3-security]# ./bin/stop-hbase.sh
stopping hbase...........

1.2.5. Where to go next
The above described standalone setup is good for testing and experiments only. In the next chapter, , we'll go into depth on the different HBase run modes, system requirements running HBase, and critical configurations setting up a distributed HBase deploy.