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

<?xml version="1.0"?>

<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

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

we'll go into depth on the different HBase run modes, system requirements

running HBase, and critical configurations setting up a distributed HBase deploy.