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From "Erik Forsberg (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-8339) Reading columns marked as type different than default validation class from CQL causes errors
Date Wed, 19 Nov 2014 09:34:33 GMT
Erik Forsberg created CASSANDRA-8339:
----------------------------------------

             Summary: Reading columns marked as type different than default validation class
from CQL causes errors
                 Key: CASSANDRA-8339
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8339
             Project: Cassandra
          Issue Type: Bug
            Reporter: Erik Forsberg
            Assignee: Tyler Hobbs


As [discussed on users mailing list|http://www.mail-archive.com/user%40cassandra.apache.org/msg39251.html]
I'm having trouble reading data from a table created via thrift, where some columns are marked
as having a validator different than the default one.

Minimal working example:

{noformat}
#!/usr/bin/env python

# Run this in virtualenv with pycassa and cassandra-driver installed via pip
import pycassa
import cassandra
import calendar
import traceback
import time
from uuid import uuid4

keyspace = "badcql"

sysmanager = pycassa.system_manager.SystemManager("localhost")
sysmanager.create_keyspace(keyspace, strategy_options={'replication_factor':'1'})
sysmanager.create_column_family(keyspace, "Users", key_validation_class=pycassa.system_manager.LEXICAL_UUID_TYPE,
                                comparator_type=pycassa.system_manager.ASCII_TYPE,
                                default_validation_class=pycassa.system_manager.UTF8_TYPE)
sysmanager.create_index(keyspace, "Users", "username", pycassa.system_manager.UTF8_TYPE)
sysmanager.create_index(keyspace, "Users", "email", pycassa.system_manager.UTF8_TYPE)
sysmanager.alter_column(keyspace, "Users", "default_account_id", pycassa.system_manager.LEXICAL_UUID_TYPE)
sysmanager.create_index(keyspace, "Users", "active", pycassa.system_manager.INT_TYPE)
sysmanager.alter_column(keyspace, "Users", "date_created", pycassa.system_manager.LONG_TYPE)

pool = pycassa.pool.ConnectionPool(keyspace, ['localhost:9160'])
cf = pycassa.ColumnFamily(pool, "Users")

user_uuid = uuid4()

cf.insert(user_uuid, {'username':'test_username', 'auth_method':'ldap', 'email':'test@example.com',
'active':1, 
                      'date_created':long(calendar.timegm(time.gmtime())), 'default_account_id':uuid4()})

from cassandra.cluster import Cluster
cassandra_cluster = Cluster(["localhost"])
cassandra_session = cassandra_cluster.connect(keyspace)
print "username", cassandra_session.execute('SELECT value from "Users" where key = %s and
column1 = %s', (user_uuid, 'username',))
print "email", cassandra_session.execute('SELECT value from "Users" where key = %s and column1
= %s', (user_uuid, 'email',))
try:
    print "default_account_id", cassandra_session.execute('SELECT value from "Users" where
key = %s and column1 = %s', (user_uuid, 'default_account_id',))
except Exception as e:
    print "Exception trying to get default_account_id", traceback.format_exc()
    cassandra_session = cassandra_cluster.connect(keyspace)

try:
    print "active", cassandra_session.execute('SELECT value from "Users" where key = %s and
column1 = %s', (user_uuid, 'active',))
except Exception as e:
    print "Exception trying to get active", traceback.format_exc()
    cassandra_session = cassandra_cluster.connect(keyspace)

try:
    print "date_created", cassandra_session.execute('SELECT value from "Users" where key =
%s and column1 = %s', (user_uuid, 'date_created',))
except Exception as e:
    print "Exception trying to get date_created", traceback.format_exc()
    
{noformat}



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