Can't connect to unsecured hive. SASL error: TTransportException: Could not start SASL: Error in sasl_client_start (-4) SASL(-4): no mechanism available: Unable to find a callback: 2

[SaucePan1]

This is the code

from pyhive import hive
conn = hive.Connection(host='host_name_with_auth_none' , port=10000, auth='NONE' )
cursor = conn.cursor()
cursor.execute("SHOW TABLES")
for table in cursor.fetchall():
    print table

I get the following error:

---

TTransportException Traceback (most recent call last)
in ()
1 from pyhive import hive
----> 2 conn = hive.Connection(host='host_',port=10000, auth='NONE' )
3
4 cursor = conn.cursor()
5 cursor.execute("SHOW TABLES")

C:\Users\u19m41\AppData\Local\Continuum\Anaconda2\lib\site-packages\pyhive-0.5.0-py2.7.egg\pyhive\hive.pyc in init(self, host, port, username, database, auth, configuration, kerberos_service_name, password, thrift_transport)
157
158 try:
--> 159 self._transport.open()
160 open_session_req = ttypes.TOpenSessionReq(
161 client_protocol=protocol_version,

C:\Users\u19m41\AppData\Local\Continuum\Anaconda2\lib\site-packages\thrift_sasl-0.2.1-py2.7.egg\thrift_sasl_init_.pyc in open(self)
70 if not ret:
71 raise TTransportException(type=TTransportException.NOT_OPEN,
---> 72 message=("Could not start SASL: %s" % self.sasl.getError()))
73
74 # Send initial response

TTransportException: Could not start SASL: Error in sasl_client_start (-4) SASL(-4): no mechanism available: Unable to find a callback: 2

Any idea on why this is happening?

[jingw]

Can you confirm that your HS2's hive.server2.authentication matches what your passing to PyHive's auth parameter?

This is known to work in the Travis build setup, so if there's nothing obvious, you can troubleshoot by comparing your configs with what .travis.yml sets up.

[duniang818]

i encontered the same quetion,and i sure the configuration is mated, but the error is always there.

how can i solve it?

plz help me, thanks.

hive.server2.authentication NONE

cursor = hive.Connection(host='114.55.41.85').cursor()

thrift.transport.TTransport.TTransportException: Could not start SASL: b'Error in sasl_client_start (-4) SASL(-4): no mechanism available: Unable to find a callback: 2'

[duniang818]

@SaucePan1

[SaucePan1]

@jingw Yes I already confirmed this.

I solved the issue using impyla (instead of pyhive), and getting PURE-SASL instead of SASL. This is the issue I opened on impyla: cloudera/impyla#267

[jingw]

I don't know then, sorry. Glad to hear you solved your issue.

[servomac]

I have solved the same issue installing the package libsasl2-modules in Ubuntu.

requirements.txt

PyHive==0.5.0
sasl==0.2.1
thrift==0.10.0
thrift-sasl==0.3.0

Dockerfile

FROM python:3.6

RUN apt-get update && apt-get install -y libsasl2-modules libsasl2-dev

WORKDIR /code
ADD requirements.txt .
RUN pip install -r requirements.txt

[rajnishgarg]

@servomac Thanks a lot.

[dhananjaymehta]

@SaucePan1 I had similar issue, I followed most of the steps suggested here in this thread, i.e set authentication to NONE, had latest version of all the packages (sasl, thrift, pyhive) but still did not work. Seems like only piece missing for me was plain kerberos plugin, so i did -
yum install cyrus-sasl-plain

this was helpful

[srinu989]

Hi Dhananjay

       We are trying to connect hive tables from python ,while connecting facing issues.We are sending our full details please help on this.

we installed python version 2.7.15 and anaconda version 2.7.14
We installed below packages

pip install sasl
pip install thrift
pip install thrift-sasl
pip install PyHive

we written the below code to connect hive tables from python script

from pyhive import hive
conn = hive.Connection(host="172.16.17.196", port=10000, username="mapr", database="default")
cursor = conn.cursor()
cursor.execute("SHOW DATABASES")
for result in cursor.fetchall():
use_result(result)

We are getting below error

==========================

Traceback (most recent call last):
File "", line 1, in
File "C:\Users\mapr\Anaconda2\lib\site-packages\pyhive\hive.py", line 64, in connect
return Connection(*args, **kwargs)
File "C:\Users\mapr\Anaconda2\lib\site-packages\pyhive\hive.py", line 162, in init
self.transport.open()
File "C:\Users\mapr\Anaconda2\lib\site-packages\thrift_sasl_init.py", line 79, in open
message=("Could not start SASL: %s" % self.sasl.getError()))
thrift.transport.TTransport.TTransportException: Could not start SASL: Error in sasl_client_start (-4) SASL(-4): no mechanism available: Unable to find a callback: 2

[ufukomer]

@dhananjaymehta That did not worked for me. Does it require any additional configuration?

[hetspookjee]

Hi Dhananjay

       We are trying to connect hive tables from python ,while connecting facing issues.We are sending our full details please help on this.

we installed python version 2.7.15 and anaconda version 2.7.14
We installed below packages

pip install sasl
pip install thrift
pip install thrift-sasl
pip install PyHive

we written the below code to connect hive tables from python script

from pyhive import hive
conn = hive.Connection(host="172.16.17.196", port=10000, username="mapr", database="default")
cursor = conn.cursor()
cursor.execute("SHOW DATABASES")
for result in cursor.fetchall():
use_result(result)

We are getting below error

==========================

Traceback (most recent call last):
File "", line 1, in
File "C:\Users\mapr\Anaconda2\lib\site-packages\pyhive\hive.py", line 64, in connect
return Connection(*args, **kwargs)
File "C:\Users\mapr\Anaconda2\lib\site-packages\pyhive\hive.py", line 162, in init
self.transport.open() File "C:\Users\mapr\Anaconda2\lib\site-packages\thrift_sasl__init_.py", line 79, in open
message=("Could not start SASL: %s" % self.sasl.getError()))
thrift.transport.TTransport.TTransportException: Could not start SASL: Error in sasl_client_start (-4) SASL(-4): no mechanism available: Unable to find a callback: 2

I'm not sure if it was the exact same error but I got a similar one and solved it by installing SASL manually through this:

Download unofficial from: https://www.lfd.uci.edu/~gohlke/pythonlibs/#sasl
(via https://stackoverflow.com/questions/26505882/unable-to-install-sasl-0-1-3-python-package-on-windows-machine/35985464)

[wenjunxiao]

This may be sasl's problem, I use https://blog.csdn.net/wenjun_xiao/article/details/104458940 to solve this problem

[cdarlint]

Thanks @wenjunxiao

sasl package needs to find a plugin folder named "sasl2"
which possibly located in site-packages/sasl or Library/bin
and needs to be defined in windows registry string
SOFTWARE\Carnegie Mellon\Project Cyrus\SASL Library\SearchPath
another option is to copy sasl2 into C:\CMU\bin\

refer to https://github.com/cyrusimap/cyrus-sasl/blob/master/lib/common.c#L2472