Question

如何在Python中访问HBase的数据

Answer 1

Python连接HBase时需要先加载Thrift和HBase的相关包，之后创建与HBase的连接并进行后续操作，具体代码如下：
# -*- coding: utf-8 -*-
import sys
reload(sys)
sys.setdefaultencoding('utf-8')
from thrift.transport.TSocket import TSocket
from thrift.transport.TTransport import TBufferedTransport
from thrift.protocol import TBinaryProtocol
from hbase import Hbase
from hbase.ttypes import *
import pymongo
import hashlib
import time
from datetime import datetime

class HBaseOperator():
def __init__(self):
self.host = "ip_address"
self.port = 9090
self.transport = TBufferedTransport(TSocket(self.host, self.port))
self.transport.open()
self.protocol = TBinaryProtocol.TBinaryProtocol(self.transport)
self.client = Hbase.Client(self.protocol)

def __del__(self):
self.transport.close()

def getAllTablesInfo(self):
#get table info
listTables = self.client.getTableNames()
print "="*40
print "Show all tables information...."

for tableName in listTables:
print "TableName:" + tableName
print " "
listColumns = self.client.getColumnDescriptors(tableName)
print listColumns
print " "

listTableRegions = self.client.getTableRegions(tableName)
print listTableRegions
print "+"*40