Python uses thrift to operate hbase instances

Thrift is a binary communication middleware developed and open-source by facebook. with thrift, we can make full use of the advantages of various languages to compile efficient code. Thrift is a binary communication middleware developed and open-source by facebook. with thrift, we can make full use of the advantages of various languages to compile efficient code.

Thrift paper: http://pan.baidu.com/share/link? Consumer id = 234128 & uk = 3238841275

Install thrift: http://thrift.apache.org/docs/install/ubuntu/

After the installation is complete, go to the hbase directory and find Hbase. thrift.

Hbase-0.94.4/src/main/resources/org/apache/hadoop/hbase/thrift can be found

Thrift -- gen python hbase. thrift will generate the gen-py folder and change it to hbase

Install python's thrift library

Sudo pip install thrift

Start hbase's thrift service: bin/hbase-daemon.sh start thrift default port is 9090

Create an hbase table:

from thrift import Thriftfrom thrift.transport import TSocketfrom thrift.transport import TTransportfrom thrift.protocol import TBinaryProtocol  from hbase import Hbasefrom 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.createTable('test', [contents])  print client.getTableNames()

Run the code. after successful execution, go to the hbase shell and run the command list to check that the test table has been created successfully.

Insert data:

from thrift import Thriftfrom thrift.transport import TSocketfrom thrift.transport import TTransportfrom 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()  row = 'row-key1'  mutations = [Mutation(column="cf:a", value="1")]client.mutateRow('test', row, mutations, None)

Obtain a row of data:

from thrift import Thriftfrom thrift.transport import TSocketfrom thrift.transport import TTransportfrom thrift.protocol import TBinaryProtocol  from hbase import Hbasefrom hbase.ttypes import *  transport = TSocket.TSocket('localhost', 9090)transport = TTransport.TBufferedTransport(transport)  protocol = TBinaryProtocol.TBinaryProtocol(transport)  client = Hbase.Client(protocol)  transport.open()  tableName = 'test'rowKey = 'row-key1'  result = client.getRow(tableName, rowKey, None)print resultfor r in result:    print 'the row is ' , r.row    print 'the values is ' , r.columns.get('cf:a').value

If multiple rows are returned, scan is required:

from thrift import Thriftfrom thrift.transport import TSocketfrom thrift.transport import TTransportfrom thrift.protocol import TBinaryProtocol  from hbase import Hbasefrom hbase.ttypes import *  transport = TSocket.TSocket('localhost', 9090)transport = TTransport.TBufferedTransport(transport)  protocol = TBinaryProtocol.TBinaryProtocol(transport)  client = Hbase.Client(protocol)transport.open()  scan = TScan()tableName = 'test'id = client.scannerOpenWithScan(tableName, scan, None)  result2 = client.scannerGetList(id, 10)  print result2

ScannerGet takes only one row of data at a time:

from thrift import Thriftfrom thrift.transport import TSocketfrom thrift.transport import TTransportfrom thrift.protocol import TBinaryProtocol  from hbase import Hbasefrom hbase.ttypes import *  transport = TSocket.TSocket('localhost', 9090)transport = TTransport.TBufferedTransport(transport)  protocol = TBinaryProtocol.TBinaryProtocol(transport)  client = Hbase.Client(protocol)transport.open()  scan = TScan()tableName = 'test'id = client.scannerOpenWithScan(tableName, scan, None)result = client.scannerGet(id)while result:    print result    result = client.scannerGet(id)