Question

我想从python连接蜂巢。为了测试，我在Pycharm中创建了以下脚本，并尝试连接配置单元

from pyhive import  hive
import sys
import pandas as pd
import ssl
import thrift_sasl
con=hive.Connection(host="ip_addrs",port=10000,username="hiveuser_test", auth='NOSASL')
cursor = con.cursor()
print(cursor.fetchall())
print(con)

在运行代码时出现以下错误：

C:\Users\username_dim\AppData\Local\Programs\Python\Python36-32\python.exe C:/Users/username_dim/PycharmProjects/untitled1/Test
Traceback (most recent call last):
  File "C:/Users/username_dim/PycharmProjects/untitled1/Test", line 11, in <module>
    con=hive.Connection(host="ip_addres",port=10000,username="hiveuser_test", auth='NOSASL')
  File "C:\Users\username_dim\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pyhive\hive.py", line 198, in __init__
    response = self._client.OpenSession(open_session_req)
  File "C:\Users\username_dim\AppData\Local\Programs\Python\Python36-32\lib\site-packages\TCLIService\TCLIService.py", line 187, in OpenSession
    return self.recv_OpenSession()
  File "C:\Users\username_dim\AppData\Local\Programs\Python\Python36-32\lib\site-packages\TCLIService\TCLIService.py", line 199, in recv_OpenSession
    (fname, mtype, rseqid) = iprot.readMessageBegin()
  File "C:\Users\username_dim\AppData\Local\Programs\Python\Python36-32\lib\site-packages\thrift\protocol\TBinaryProtocol.py", line 148, in readMessageBegin
    name = self.trans.readAll(sz)
  File "C:\Users\username_dim\AppData\Local\Programs\Python\Python36-32\lib\site-packages\thrift\transport\TTransport.py", line 60, in readAll
    chunk = self.read(sz - have)
  File "C:\Users\username_dim\AppData\Local\Programs\Python\Python36-32\lib\site-packages\thrift\transport\TTransport.py", line 162, in read
    self.__rbuf = BufferIO(self.__trans.read(max(sz, self.__rbuf_size)))
  File "C:\Users\username_dim\AppData\Local\Programs\Python\Python36-32\lib\site-packages\thrift\transport\TSocket.py", line 132, in read
    message='TSocket read 0 bytes')
thrift.transport.TTransport.TTransportException: TSocket read 0 bytes
Process finished with exit code 1
Core-site.xml

我曾经配置过hiveserver2

<property>
  <name>hadoop.proxyuser.sqoop2.hosts</name>
  <value>*</value>
</property>
<property>
     <name>hadoop.proxyuser.sqoop2.groups</name>
     <value>*</value>
 </property>
<property>
  <name>hadoop.proxyuser.hiveuser_test.hosts</name>
  <value>*</value>
 </property>
<property>
      <name>hadoop.proxyuser.hiveuser_test.groups</name>
      <value>*</value>
</property>
<property>
     <name>hadoop.proxyuser.server.hosts</name>
     <value>*</value>
</property>
    <property>
      <name>hadoop.proxyuser.server.groups</name>
      <value>*</value>
  </property

> Blockquote

请帮助我纠正错误

Answer 1

cursor.execute（“ SELECT ....”）丢失。这就是为什么您的节俭连接无法读取任何数据async function submit_reset_password_request (request, response) { if(request.session.id) { return response.json({ error: true, message: 'password reset cannot be requested during an sctive session' }); } const { email } = request.body; if(email) { email = email.toLowerCase().trim(); } if(!email) { return response.json({ error: true, message: 'input is required' }); } try { const user_result = await models.Users.findOne({ where: { email } }); if(!user_result) { return response.json({ error: true, message: 'No account found by that email' }); } const user = user_result.dataValues; const request_result = await models.ResetPasswordRequests.findOne({ where: { user_email: user.email } }); if(request_result) { return response.json({ error: true, message: 'A password reset has already been requested for this email' }); } const new_reset_request = await models.ResetPasswordRequests.create({ user_email: user.email }); const reset_request = new_reset_request.dataValues; // send reset request email const host = request.get('host'); const link = host.endsWith('/') ? (host + 'search') : (host + '/search'); const email_subject = 'Epsity - Password reset requested'; const email_html = templateEngine.PasswordReset_EMAIL({ user, reset_request, link }); const email_result = await sendgrid_manager.send_email(null, request.session.you.email, email_subject, email_html); return response.json({ success: true, message: 'A password reset request has been sent to the provided email!' }); } catch(error) { console.log(error); return response.json({ error, message: 'Could not sumbit reset password request...' }); } }

修改后的代码如下。

thrift.transport.TTransport.TTransportException: TSocket read 0 bytes

注意：根据需要替换此行。 select_stmt ='SELECT * FROM t1 LIMIT 10'

将python连接到Hive

1 个答案: