cassandra.InvalidRequest: code=2200 [Invalid query] message="Keyspace '' does not exist"
The instructions for creating the 'demo' keyspace are at a page linked from http://planetcassandra.org/getting-started-with-cassandra-and-python/:
To follow this tutorial, you should already have a running Cassandra instance, and have gone through the 10 minute walkthrough here: http://www.PlanetCassandra.org/try-cassandra/
The try-cassandra page has a link for the developer walkthrough (click on "Start Developer Walkthrough"). The developer walk through has a step for creating the 'demo' keyspace:
The keyspace can include operational elements, such as replication factor and data center awareness. Let’s create a keyspace called “demo”. We will include replication strategy class and factor; details that will be covered in a future tutorial.
To create the keyspace “demo”, at the CQL shell prompt, type:
cqlsh> CREATE KEYSPACE demo WITH REPLICATION = { 'class' : 'SimpleStrategy', 'replication_factor' : 1 };
To create the table
use demo;
CREATE TABLE users (
firstname text,
lastname text,
age int,
email text,
city text,
PRIMARY KEY (lastname));
micheal
Updated on June 04, 2022Comments
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micheal almost 2 years
I'm trying to use python driver for cassandra but when I run these three lines in python shell
from cassandra.cluster import Cluster cluster = Cluster() session = cluster.connect('demo')
I get this error
cassandra.InvalidRequest: code=2200 [Invalid query] message="Keyspace 'demo' does not exist"
pip freeze says
cassandra-driver==2.5.0
I checked cqlsh
Connected to Test Cluster at 127.0.0.1:9042. [cqlsh 5.0.1 | Cassandra 2.1.4 | CQL spec 3.2.0 | Native protocol v3] Use HELP for help. cqlsh> describe keyspaces system_traces system cqlsh>
there is no keyspace named 'demo' but I'm just following these two tutorials and they haven't said anything about pre creating keyspace http://planetcassandra.org/getting-started-with-cassandra-and-python/ http://datastax.github.io/python-driver/getting_started.html
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Aaron about 9 yearsGood find, Andy. I also thought that was odd that they didn't include the
CREATE KEYSPACE
statement.