如何从jupyter笔记本的hdfs中读取大表作为Dataframe？脚本通过docker映像启动。
图书馆：
sasl==0.2.1
节俭==0.11.0
节俭sasl==0.4a1
异丙基==0.16.2

from impala.dbapi import connect 
from impala.util import as_pandas

impala_conn = connect(host='hostname', port=21050,
auth_mechanism='GSSAPI', 
                      timeout=100000, use_ssl=True, ca_cert=None, 
                      ldap_user=None, ldap_password=None, 
                      kerberos_service_name='impala')

这很管用。

import pandas as pd
df = pd.read_sql("select id, crt_mnemo from demo_db.stg_deals_opn LIMIT 100", impala_conn)
print(df)

这不管用。操作挂起，不给出错误。

import pandas as pd
df = pd.read_sql("select id, crt_mnemo from demo_db.stg_deals_opn LIMIT 1000", impala_conn)
print(df)