[2011-09-20] HBase configuration

http://hbase.apache.org/book/hadoop.html

2.3. Hadoop
还得自己build Hadoop，不然会因为缺少a durable sync而丢失数据，真贱……
暂时没管

2.3.1. Hadoop Security

2.3.2. dfs.datanode.max.xcievers
暂时没管

http://hbase.apache.org/book/standalone_dist.html
2.4. HBase run modes: Standalone and Distributed
2.4.1. Standalone HBase
没用到

2.4.2. Distributed
2.4.2.1. Pseudo-distributed
没用到

2.4.2.2. Fully-distributed
需要指定NameNode和hbase.cluster.distributed = true

<configuration>
  ...
  <property>
    <name>hbase.rootdir</name>
    <value>hdfs://namenode.example.org:54310/hbase</value>
    <description>The directory shared by RegionServers.
    </description>
  </property>
  <property>
    <name>hbase.cluster.distributed</name>
    <value>true</value>
    <description>The mode the cluster will be in. Possible values are
      false: standalone and pseudo-distributed setups with managed Zookeeper
      true: fully-distributed with unmanaged Zookeeper Quorum (see hbase-env.sh)
    </description>
  </property>
  ...
</configuration>

2.4.2.2.1. regionservers
设置conf/regionservers添加region servers

2.4.2.2.2. ZooKeeper and HBase
设置hbase-site.xml添加

    <property>
      <name>hbase.zookeeper.quorum</name>
      <value>rs1.example.com,rs2.example.com,rs3.example.com,rs4.example.com,rs5.example.com</value>
      <description>Comma separated list of servers in the ZooKeeper Quorum.
      For example, "host1.mydomain.com,host2.mydomain.com,host3.mydomain.com".
      By default this is set to localhost for local and pseudo-distributed modes
      of operation. For a fully-distributed setup, this should be set to a full
      list of ZooKeeper quorum servers. If HBASE_MANAGES_ZK is set in hbase-env.sh
      this is the list of servers which we will start/stop ZooKeeper on.
      </description>

2.4.2.2.3. HDFS Client Configuration
编辑hbase-env.sh添加

export HBASE_CLASSPATH = /home/michael/lib/hadoop-0.20.203.0/conf
export JAVA_HOME=/home/michael/lib/jdk1.6.0_27

2.4.3. Running and Confirming Your Installation
运行bin/start-hbase.sh启动hbase