python链接hbase

安装HBase

HBase是一个构建在HDFS上的分布式列存储系统,主要用于海量结构化数据存储。这里,咱们的目标只是为Python访问HBase提供一个基本的环境,故直接下载二进制包,采用单机安装。下载后解压,修改配置文件,而后能够直接启动HBase了。所用系统版本为ubuntu14.04。php

下载

wget https://mirrors.tuna.tsinghua.edu.cn/apache/hbase/1.2.4/hbase-1.2.4-bin.tar.gz tar zxvf hbase-1.2.4-bin.tar.gz

 

配置

修改hbase-env.sh,设置JAVA_HOME。java

export JAVA_HOME=/usr/lib/jvm/java-8-oracle

 

修改hbase-site.xml,设置存储数据的根目录。python

<configuration> <property> <name>hbase.rootdir</name> <value>file:///home/mi/work/hbase/data</value> </property> </configuration>

启动git

bin/start-hbase.sh  # 启动 bin/hbase shell # 进入hbase交互shell

 

安装Thrift

安装好HBase以后,还需安装Thrift,由于其余语言调用HBase时,须要经过Thrift进行链接。sql

安装Thrift依赖

sudo apt-get install automake bison flex g++ git libboost1.55 libevent-dev libssl-dev libtool make pkg-config
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PS: libboost1.55-all-dev,在个人ubuntu14.04上安装有点问题,因此装的是libboost1.55。shell

编译安装

下载源码,解压后进行编译安装。Thrift下载地址apache

tar zxf thrift-0.10.0.tar.gz cd thrift-0.10.0/ ./configure --with-cpp --with-boost --with-python --without-csharp --with-java --without-erlang --without-perl --with-php --without-php_extension --without-ruby --without-haskell --without-go make # 编译耗时较长 sudo make install

 

参考文档: 
https://thrift.apache.org/docs/install/debianhttps://thrift.apache.org/docs/BuildingFromSourceubuntu

启动HBase的Thrift服务

bin/hbase-daemon.sh start thrift

 

检查系统进程ruby

能够看到ThriftServer已成功启动,而后咱们就能够使用多种语言,经过Thrift来访问HBase了。~/work/hbase/hbase-1.2.4/conf$ jps 3009 ThriftServer 4184 HMaster 5932 Jps 733 Main

Python操做HBase

下面以Python为例来演示如何访问HBase。bash

安装依赖包

sudo pip install thrift sudo pip install hbase-thrift

Demo程序

from thrift import Thrift from thrift.transport import TSocket from thrift.transport import TTransport from thrift.protocol import TBinaryProtocol from hbase import Hbase from hbase.ttypes import * transport = TSocket.TSocket('localhost', 9090) transport = TTransport.TBufferedTransport(transport) protocol = TBinaryProtocol.TBinaryProtocol(transport) client = Hbase.Client(protocol) transport.open() contents = ColumnDescriptor(name='cf:', maxVersions=1) # client.deleteTable('test') client.createTable('test', [contents]) print client.getTableNames() # insert data transport.open() row = 'row-key1' mutations = [Mutation(column="cf:a", value="1")] client.mutateRow('test', row, mutations) # get one row tableName = 'test' rowKey = 'row-key1' result = client.getRow(tableName, rowKey) print result for r in result: print 'the row is ', r.row print 'the values is ', r.columns.get('cf:a').value

执行结果:

['test'] [TRowResult(columns={'cf:a': TCell(timestamp=1488617173254, value='1')}, row='row-key1')] the row is row-key1 the values is 1
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