Thank you for the reply. I installed libev. However, it throwing a new
exception. I searched online but couldn't find much help.
File "Utils/readDataCassandra.py", line 6, in <module>
from cassandra.io.libevreactor import LibevConnection
File
"/usr/local/lib/python2.7/site-packages/cassandra/io/libevreactor.py", line
17, in <module>
import cassandra.io.libevwrapper as libev
ImportError:
/usr/local/lib/python2.7/site-packages/cassandra/io/libevwrapper.so:
undefined symbol: ev_run
Can you please help me with this?
Regards,
Sundeep
On Sun, Mar 16, 2014 at 8:33 PM, Laing, Michael
<michael.la...@nytimes.com>wrote:
> A possible workaround - not a fix - might be to install libev so the libev
> event loop is used.
>
> See http://datastax.github.io/python-driver/installation.html
>
> Also be sure you are running the latest version: 1.0.2 I believe.
>
> Your ';' is outside of your 'str' - actually shouldn't be a problem tho.
>
> Good luck!
> ml
>
>
> On Sun, Mar 16, 2014 at 8:19 PM, Sundeep Kambhampati <
> satyasunde...@gmail.com> wrote:
>
>> Hi,
>>
>> I am using cassandra-2.0.4.
>>
>> When I execute following python code, I often get an exception mentioned
>> below. Sometimes it works fine but most of the times it throws an error.
>> All the nodes are up and running. Data in second column of table is huge,
>> few thousand characters long and there around 10K rows.
>>
>> Code :
>>
>> from cassandra.cluster import Cluster
>>
>> cluster = Cluster(['10.2.252.0', '10.2.252.1'])
>> session = cluster.connect('test')
>>
>> str = "SELECT * FROM users ";
>> rows = session.execute(str)
>>
>> for user_row in rows:
>> print user_row.f_id, user_row.data
>>
>> cluster.shutdown()
>>
>> Exception:
>>
>> Exception in thread event_loop (most likely raised during interpreter
>> shutdown):
>> Traceback (most recent call last):
>> File "/usr/local/lib/python2.7/threading.py", line 810, in
>> __bootstrap_inner
>> File "/usr/local/lib/python2.7/threading.py", line 763, in run
>> File
>> "/usr/local/lib/python2.7/site-packages/cassandra/io/asyncorereactor.py",
>> line 52, in _run_loop
>> <type 'exceptions.AttributeError'>: __exit__
>>
>>
>> Can someone help me fixing this error?
>>
>> Regards,
>> Sundeep
>>
>
>
