lovecanopy / hadoop

Hadoop.hdfs.hbase

Hadoop

Hadoop.hdfs.hbase

常见问题

Hadoop伪分布式安装

http://www.cnblogs.com/fabulousyoung/p/4074197.html http://www.cnblogs.com/lanxuezaipiao/p/3525554.html

常用API

http://hadoop.apache.org/docs/r1.2.1/api/index.html

HbaseAPI

https://hbase.apache.org/apidocs/index.html

Hadoop管理页面

http://192.168.2.6:60010/master-status

eclipse远程开发hbase是报 unknown host错误

1.首先配置好Zookeeper的configuration信息 configuration = HBaseConfiguration.create();
configuration.set("hbase.zookeeper.quorum", "192.168.2.6"); configuration.set("hbase.zookeeper.property.clientPort", "2181"); configuration.set("hbase.master", "192.168.2.6:54311"); 2.若Hbase在linux，eclipse在Windows 类似异常信息如下：java.net.UnknownHostException: unknown host: master 解决办法如下：在C:\WINDOWS\system32\drivers\etc\hosts文件中添加如下信息 192.168.2.34 master

eclipse远程访问hdfs时，路径应像如下设置，否则无法连接

private String rootPath=new String("hdfs://192.168.2.6:9000/"); coreSys=FileSystem.get(URI.create(rootPath), conf); Path demoDir=new Path(rootPath+"/user/root/demoDir");

执行mapreduce时，注意运行时指定参数

hdfs://192.168.2.6:9000/user/root/input/* hdfs://192.168.2.6:9000/user/root/output