HBase Configuration and connection HBase settings under Windows

This article describes the installation of HBase in stand-alone mode in a Linux environment, and the related settings for connecting hbase when developing with eclipse under Windows.

1, install the Linux system (Ubuntu 10.04server) installation, please install the additional open ssh-server. Machine Name: Ubuntu (Cat/etc/hostname, the result is Ubuntu)

2, install Java, set environment variables. Append the following three lines to the end of the/etc/profile.

Exportjava_home= "/home/had/jdk1.6.0_20"

Exportclasspath=.: $CLASSPATH: $JAVA _home/lib

Export path=.: $PATH: $JAVA _home/bin

Where Java_home is pointing to the Java installation directory

3, SSH upload hbase-0.90.4.tar.gz to/home/had directory. Tar xzf hbase-0.90.4.tar.gz Decompression

4, enter hbase-0.90.4 directory, edit Conf/hbase-site.xml file, add in configuration:

<property>

<name>hbase.rootdir</name>

<value>/home/had/hbase-0.90.4/data</value>

</property>

The purpose is to set the data store path in the directory specified by value

5, Linux Ubuntu 10.04 server./etc/hosts

A) Comment out 127.0.1.1 ubuntu.localdomain ubuntu

b Add a line 192.168.128.128 Ubuntu

I. 192.168.128.128 is a native IP

Ii. Ubuntu is the machine name

6, Test HBase:

A) CD hbase-0.90.4

b) bin/start-hbase.sh

c) Bin/hbase Shell

D create ' database ', ' CF '

e) List

f) If successful you can see the following results:

HBase (main): 001:0>list

table                                                                                                                                                                                      

database                                                                                                                                                                                   

1 row (s) in 0.5910 seconds

HBase (Main):002:0>

Http://192.168.128.128:60010/master.jsp This page can also see the appropriate information

7. Windows c:/windows/system32/dirvers/hosts file plus one line:

192.168.128.128 Ubuntu

Enables Windows to resolve Ubuntu to IP addresses 192.168.128.128

8. Open Eclipse, create a new project, copy the Lib directory below hbase-0.90.4 to the project, and add the jar package to the Classpath

9, a new type of hellohbase:

Package demo;


Import java.io.IOException;


Import org.apache.hadoop.conf.Configuration;
Import org.apache.hadoop.hbase.HBaseConfiguration;
Import Org.apache.hadoop.hbase.HColumnDescriptor;
Import Org.apache.hadoop.hbase.HTableDescriptor;
Import Org.apache.hadoop.hbase.client.HBaseAdmin;
Import org.apache.hadoop.hbase.util.Bytes;


public class Hellohbase {
public static void Main (string[] args) throws IOException {
Configuration conf = hbaseconfiguration.create ();
Conf.set ("Hbase.zookeeper.quorum", "192.168.128.128");
Hbaseadmin admin = new hbaseadmin (conf);
Htabledescriptor tabledescriptor = Admin.gettabledescriptor (bytes.tobytes ("Database"));
byte[] name = Tabledescriptor.getname ();
System.out.println (new String (name));
hcolumndescriptor[] columnfamilies = Tabledescriptor.getcolumnfamilies ();
for (Hcolumndescriptor d:columnfamilies) {
System.out.println (D.getnameasstring ());
}
}
}

Run, you should print the following two lines at this time:

Database

Cf

If not, the configuration fails, please check the other settings.

Of these, the 5th, 7 steps and Conf.set in the code ("Hbase.zookeeper.quorum", "192.168.128.128"); Determines whether you can connect hbase on Windows.

Resources:

HBase Official Document: http://hbase.apache.org/book/quickstart.html

HBase Chinese Document: http://www.yankay.com/wp-content/hbase/book.html

Resolve references when other machines are using Eclipse development connection HBase exception: http://hi.baidu.com/laozhenghit/blog/item/987608440c76d5146a63e523.html