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python 操作hive pyhs2方式

yipeiwu_com6年前 (2020-03-06)Python基础

使用kerberos时

import pyhs2

class HiveClient:
  # 初始化
  def __init__(self, db_host, user, password, database, port=10000, authMechanism="PLAIN", configuration=None):
    self.conn = pyhs2.connect(host=db_host,
                 port=port,
                 authMechanism=authMechanism,
                 user=user,
                 password=password,
                 database=database,
                 configuration=configuration,
                 )

  # 查询方法
  def query(self, sql):
    with self.conn.cursor() as cursor:
      cursor.execute(sql)
      return cursor.fetch()

  def close(self):
    self.conn.close()


def getHiveData(sql):
  config = {"mapreduce.job.queuename": "default", 'krb_host': 'hiveserve2ip', 'krb_service': 'hive'}
  hive_client = HiveClient(db_host='hiveserve2ip', port=10000, user='user@kdc.com', password='hive', database='dw.usee',
               authMechanism='KERBEROS', configuration=config)
  print sql
  result = hive_client.query(sql)
  return result

Could not start SASL: Error in sasl_client_start (-1) SASL(-1)

安装

yum install cyrus-sasl-plain cyrus-sasl-devel cyrus-sasl-gssapi

pyhs2 安装 sasl问题

yum install cyrus-sasl-devel 
yum install cyrus-sasl-lib 
yum install libgsasl-devel 
yum install saslwrapper

对接superset hive kerberos

SQLAlchemy URI

hive://herverser2ip:10000/db

扩展连接参数

{
  "metadata_params": {},
  "engine_params": {
    "connect_args": {
    "auth": "KERBEROS",
        "kerberos_service_name": "hive",
    "username" : "user@KDC.COM"
    }
  }
}

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