参考 zfno11:& https://ask.hellobi.com/blog/ysfyb/18251
HiveServer是一种可选服务,允许远程客户端可以使用各种编程语言向Hive提交请求并检索结果。
使用Impala 连接hive
安装前需把相关的包卸载干净,然后重新安装对应的版本
pip3 uninstall sasl #运行时报错module 'sasl' has no attribute 'Client',说明该包没有删除干净,需要手动删除文件 pip3 install impyla pip3 install pure-sasl pip3 install thrift_sasl==0.2.1 --no-deps
连接代码:
from impala.dbapi import connect conn = connect(host="xxx.xxx.xx.xxx", port=10000, user="root", auth_mechanism="PLAIN", password='dfghjkl', database="xxx") cur=conn.cursor() cur.execute('SHOW TABLES') for result in cur.fetchall(): print(result)
报错:TypeError: can't concat str to bytes 需要在File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-p
ackages\thrift_sasl\__init__.py"第94行代码
修改源代码:
def _send_message(self, status, body): header = struct.pack(">BI", status, len(body)) self._trans.write(header + body) self._trans.flush()
改为:
def _send_message(self, status, body): header = struct.pack(">BI", status, len(body)) if(type(body) is str): body = body.encode() self._trans.write(header + body) self._trans.flush()
修改之后就OK了。