Thanks Jonathan,
So it looks like the python bindings are using a deprecated non framed
protocol. Leaving that problem aside for a moment I changed the server to work
in non framed mode and now get a different error:
v...@vs001:~/apache-cassandra-0.7.0-beta3/interface/gen-py/cassandra$
Cassandra-remote -h localhost:9160 describe_keyspace systemTraceback (most
recent call last):
File "/usr/local/bin/Cassandra-remote", line 5, in <module>
pkg_resources.run_script('python-cassandra==0.6.1', 'Cassandra-remote')
File "/usr/lib/python2.6/dist-packages/pkg_resources.py", line 461, in
run_script
self.require(requires)[0].run_script(script_name, ns)
File "/usr/lib/python2.6/dist-packages/pkg_resources.py", line 1194, in
run_script
execfile(script_filename, namespace, namespace)
File
"/usr/local/lib/python2.6/dist-packages/python_cassandra-0.6.1-py2.6.egg/EGG-INFO/scripts/Cassandra-remote",
line 204, in <module>
pp.pprint(client.describe_keyspace(args[0],))
File
"/usr/local/lib/python2.6/dist-packages/python_cassandra-0.6.1-py2.6.egg/cassandra/Cassandra.py",
line 1006, in describe_keyspace
return self.recv_describe_keyspace()
File
"/usr/local/lib/python2.6/dist-packages/python_cassandra-0.6.1-py2.6.egg/cassandra/Cassandra.py",
line 1030, in recv_describe_keyspace
raise TApplicationException(TApplicationException.MISSING_RESULT,
"describe_keyspace failed: unknown result");
thrift.Thrift.TApplicationException: describe_keyspace failed: unknown result
Any ideas?
Cheers,
Andrew
-----Original Message-----
From: Jonathan Ellis [mailto:[email protected]]
Sent: 09 November 2010 17:56
To: user
Subject: Re: Cassandra - python communication problem
You're using an unframed transport to talk to a framed server, or vice versa.
On Tue, Nov 9, 2010 at 11:47 AM, Dr. Andrew Perella <[email protected]> wrote:
> Hi,
>
>
>
> I have been trying to connect to Cassandra 0.7.0-beta3 via python to no
> avail:
>
>
>
> v...@vs001:~/apache-cassandra-0.7.0-beta3/interface/gen-py/cassandra$
> Cassandra-remote -h localhost:9160 describe_keyspace system
>
> Traceback (most recent call last):
>
> File "/usr/local/bin/Cassandra-remote", line 5, in <module>
>
> pkg_resources.run_script('python-cassandra==0.6.1', 'Cassandra-remote')
>
> File "/usr/lib/python2.6/dist-packages/pkg_resources.py", line 461, in
> run_script
>
> self.require(requires)[0].run_script(script_name, ns)
>
> File "/usr/lib/python2.6/dist-packages/pkg_resources.py", line 1194, in
> run_script
>
> execfile(script_filename, namespace, namespace)
>
> File
> "/usr/local/lib/python2.6/dist-packages/python_cassandra-0.6.1-py2.6.egg/EGG-INFO/scripts/Cassandra-remote",
> line 204, in <module>
>
> pp.pprint(client.describe_keyspace(args[0],))
>
> File
> "/usr/local/lib/python2.6/dist-packages/python_cassandra-0.6.1-py2.6.egg/cassandra/Cassandra.py",
> line 1006, in describe_keyspace
>
> return self.recv_describe_keyspace()
>
> File
> "/usr/local/lib/python2.6/dist-packages/python_cassandra-0.6.1-py2.6.egg/cassandra/Cassandra.py",
> line 1017, in recv_describe_keyspace
>
> (fname, mtype, rseqid) = self._iprot.readMessageBegin()
>
> File
> "/usr/local/lib/python2.6/dist-packages/Thrift-0.2.0-py2.6-linux-x86_64.egg/thrift/protocol/TBinaryProtocol.py",
> line 126, in readMessageBegin
>
> sz = self.readI32()
>
> File
> "/usr/local/lib/python2.6/dist-packages/Thrift-0.2.0-py2.6-linux-x86_64.egg/thrift/protocol/TBinaryProtocol.py",
> line 203, in readI32
>
> buff = self.trans.readAll(4)
>
> File
> "/usr/local/lib/python2.6/dist-packages/Thrift-0.2.0-py2.6-linux-x86_64.egg/thrift/transport/TTransport.py",
> line 58, in readAll
>
> chunk = self.read(sz-have)
>
> File
> "/usr/local/lib/python2.6/dist-packages/Thrift-0.2.0-py2.6-linux-x86_64.egg/thrift/transport/TTransport.py",
> line 155, in read
>
> self.__rbuf = StringIO(self.__trans.read(max(sz, self.DEFAULT_BUFFER)))
>
> File
> "/usr/local/lib/python2.6/dist-packages/Thrift-0.2.0-py2.6-linux-x86_64.egg/thrift/transport/TSocket.py",
> line 94, in read
>
> raise TTransportException(type=TTransportException.END_OF_FILE,
> message='TSocket read 0 bytes')
>
> thrift.transport.TTransport.TTransportException: TSocket read 0 bytes
>
>
>
> I get similar errors for all queries.
>
>
>
> I cannot work out what is going wrong here. Can anyone help? (I need many of
> the functions only added in 0.7)
>
>
>
> Best Regards,
>
> Andrew
>
>
>
>
>
> This e-mail is confidential and may be privileged. It may be read, copied
> and used only by the intended recipient. No communication sent by e-mail to
> or from Eutechnyx is intended to give rise to contractual or other legal
> liability, apart from liability which cannot be excluded under English law.
>
> This email has been scanned for all known viruses by www.epagency.net.
>
> www.eutechnyx.com Eutechnyx Limited. Registered in England No: 2172322
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com
This email has been scanned for all known viruses by the Email Protection
Agency.
This e-mail is confidential and may be privileged. It may be read, copied and
used only by the intended recipient. No communication sent by e-mail to or from
Eutechnyx is intended to give rise to contractual or other legal liability,
apart from liability which cannot be excluded under English law.
This email has been scanned for all known viruses by the Email Protection
Agency. http://www.epagency.net
www.eutechnyx.com Eutechnyx Limited. Registered in England No: 2172322
