铁雪资源网 Design By www.gsvan.com
新来的一个工程师不懂HBase,java不熟,python还行,我建议他那可以考虑用HBase的thrift调用,完成目前的工作。
首先,安装thrift
下载thrift,这里,我用的是thrift-0.7.0-dev.tar.gz 这个版本
tar xzf thrift-0.7.0-dev.tar.gz cd thrift-0.7.0-dev sudo ./configure --with-cpp=no --with-ruby=no sudo make sudo make install
然后,到HBase的源码包里,找到
src/main/resources/org/apache/hadoop/hbase/thrift/
执行
thrift --gen py Hbase.thrift
mv gen-py/hbase/ /usr/lib/python2.4/site-packages/ (根据python版本可能有不同)
我这里写了些调用的脚本,供大家参考
from unittest import TestCase, main 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 ColumnDescriptor, Mutation, BatchMutation class HBaseTester: def __init__(self, netloc, port, table="staftesttable"): self.tableName = table self.transport = TTransport.TBufferedTransport( TSocket.TSocket(netloc, port)) self.protocol = TBinaryProtocol.TBinaryProtocol(self.transport) self.client = Hbase.Client(self.protocol) self.transport.open() tables = self.client.getTableNames() if self.tableName not in tables: self.__createTable() def __del__(self): self.transport.close() def __createTable(self): name = ColumnDescriptor(name='name') foo = ColumnDescriptor(name='foo') self.client.createTable(self.tableName, [name,foo]) def put(self,key,name,foo): name = Mutation(column="name:v", value=name) foo = Mutation(column="foo:v",value=foo) self.client.mutateRow(self.tablename,key,[name,foo]) def scanner(self,column): scanner = client.scannerOpen(self.tablename,"",[column]) r = client.scannerGet(scanner) result= [] while r: print r[0] result.append(r[0]) r = client.scannerGet(scanner) print "Scanner finished" return result class TestHBaseTester(TestCase): def setUp(self): self.writer = HBaseTester("localhost", 9090) def tearDown(self): name = self.writer.tableName client = self.writer.client client.disableTable(name) client.deleteTable(name) def testCreate(self): tableName = self.writer.tableName client = self.writer.client self.assertTrue(self.writer.tableName in client.getTableNames()) columns =['name:','foo:'] for i in client.getColumnDescriptors(tableName): self.assertTrue(i in columns) def testPut(self): self.writer.put("r1","n1","f1") self.writer.put("r2","n2","f2") self.writer.put("r3","n3","") self.writer.scanner("name:") if __name__ == "__main__": main()
以上这篇python 调用HBase的简单实例就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。
标签:
python,hbase
铁雪资源网 Design By www.gsvan.com
广告合作:本站广告合作请联系QQ:858582 申请时备注:广告合作(否则不回)
免责声明:本站文章均来自网站采集或用户投稿,网站不提供任何软件下载或自行开发的软件! 如有用户或公司发现本站内容信息存在侵权行为,请邮件告知! 858582#qq.com
免责声明:本站文章均来自网站采集或用户投稿,网站不提供任何软件下载或自行开发的软件! 如有用户或公司发现本站内容信息存在侵权行为,请邮件告知! 858582#qq.com
铁雪资源网 Design By www.gsvan.com
暂无python 调用HBase的简单实例的评论...