pyhive的基本使用

安装

yum -y install cyrus-sasl cyrus-sasl-devel cyrus-sasl-lib  # 解决报错：sasl/sasl.h: No such file or directory

pip install sasl

pip install thrift

pip install thrift_sasl

pip install pyhive

pyhive的两种基本使用方式：同步方式和异步方式：

１、同步DB　API

from pyhive import presto
cursor = presto.connect('localhost').cursor()
cursor.execute('SELECT * FROM my_awesome_data LIMIT 10')
print cursor.fetchone()
print cursor.fetchall()

２、异步DB　API

from pyhive import hive
from TCLIService.ttypes import TOperationState
cursor = hive.connect('localhost').cursor()
cursor.execute('SELECT * FROM my_awesome_data LIMIT 10', async=True)

status = cursor.poll().operationState
while status in (TOperationState.INITIALIZED_STATE, TOperationState.RUNNING_STATE):
    logs = cursor.fetch_logs()
    for message in logs:
        print（message）
    # 可随时取消异步查询
    # cursor.cancel()
status = cursor.poll().operationState

print（cursor.fetchall()）