'Table info is preserved upon keyspace alter:
Create table
Verify schema
Alter ks
Verify that table metadata is still present
PYTHON-173'

def test_keyspace_alter(self):

    name = self._testMethodName.lower()
    self.session.execute(('CREATE    TABLE    %s.d    (d    INT    PRIMARY    KEY)' % name))
    original_keyspace_meta = self.cluster.metadata.keyspaces[name]
    self.assertEqual(original_keyspace_meta.durable_writes, True)
    self.assertEqual(len(original_keyspace_meta.tables), 1)
    self.session.execute(('ALTER    KEYSPACE    %s    WITH    durable_writes    =    false' % name))
    new_keyspace_meta = self.cluster.metadata.keyspaces[name]
    self.assertNotEqual(original_keyspace_meta, new_keyspace_meta)
    self.assertEqual(new_keyspace_meta.durable_writes, False)
