A bug: impala.error.HiveServer2Error: Invalid query handle: 284e18bfc37e4cd7:ea75d31a00000000

[#1]

from impala.dbapi import connect
import pandas as pd
class IMPALA:
    def __init__(self, host, port, user, db):
        self.host = host
        self.port = port
        self.user = user
        self.db = db

    def __GetConnect(self😞
        if not self.db:
            raise (NameError, "没有设置数据库信息")
        self.conn = connect(host=self.host, port=self.port, user=self.user, database=self.db)

        cur = self.conn.cursor()
        if not cur:
            raise (NameError, "连接数据库失败")
        else:
            return cur

    def ExecQuery(self, sql):
        cur = self.__GetConnect()
        cur.execute(sql)
        resList = cur.fetchall()
        self.conn.close()
        return resList

    def ExecNonQuery(self, sql):
        cur = self.__GetConnect()
        cur.execute(sql)
        self.conn.commit()
        self.conn.close()
user = IMPALA('172.17.200.112', 21050, 'q_cluster', 'rawdata')
sql = 'select count(DISTINCT(user_id)) as cnt from events where date = CURRENT_DATE() /*SA(production)*/'
re = user.ExecQuery(sql)
print(re)

When  'cur.execute(sql)' this line is executed, an error is reported：
impala.error.HiveServer2Error: Invalid query handle: 284e18bfc37e4cd7:ea75d31a00000000

[#2]

Hi 

I think you can try out below two options:

1.  Increase idle_session_timeout value in impala

2.  Rewrite the script to open Impala connection just before Impala related commands will be invoked.

[#3]

Hi 

Could you elaborate on how to write the queries with  idle_session_timeout value? I am facing the same error? In the GitHub https://github.com/cloudera/impyla/issues/278, it says there is not way we can set it up in the connection and would need to put it in query. Thanks.