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stathbase's Introduction

计算 hbase 表的一些 统计信息

QuickStart

注册

修改emr集群， 添加如下配置：

<property>
   <name>hbase.coprocessor.user.region.classes</name>
   <value>org.apache.hadoop.hbase.coprocessor.AggregateImplementation</value>
</property>

打开hbase shell

sudo hbase shell
disable 'your-table-name'
alter 'your-table-name', METHOD => 'table_att', 'coprocessor' => '|org.apache.hadoop.hbase.coprocessor.AggregateImplementation|1001|'
enable 'your-table-name'

运行代码

编译打包后，把jar包 （带有with-dependencies.jar）放到emr主节点上

运行

java -jar stathbase-0.0.1-jar-with-dependencies.jar conf.json

注意

  1. 代码编译环境最好和emr master环境一致，或者代码提交到emr master上执行

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