新來的一個工程師不懂HBase，java不熟，python還行，我建議他那可以考慮用HBase的thrift調用，完成目前的工作。
首先，安裝thrift
下載thrift，這里，我用的是thrift-0.7.0-dev.tar.gz 這個版本
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tar xzf thrift-0.7.0-dev.tar.gzcd thrift-0.7.0-devsudo ./configure --with-cpp=no --with-ruby=nosudo makesudo make install |
然后，到HBase的源碼包里，找到
src/main/resources/org/apache/hadoop/hbase/thrift/
執行
thrift --gen py Hbase.thrift
mv gen-py/hbase/ /usr/lib/python2.4/site-packages/ (根據python版本可能有不同)
我這里寫了些調用的腳本，供大家參考
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from unittest import TestCase, mainfrom thrift import Thriftfrom thrift.transport import TSocketfrom thrift.transport import TTransportfrom thrift.protocol import TBinaryProtocolfrom hbase import Hbasefrom hbase.ttypes import ColumnDescriptor, Mutation, BatchMutationclass 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() |
以上這篇python 調用HBase的簡單實例就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支持服務器之家。
