bcfbe54d76
There is actually only one query ID associated with each prepared statement, and it is written as a short_string. That is, it's a short length followed by a string. This was misinterpreted as a short ID and a 16 byte md5 id.
DataStax Python Driver for Apache Cassandra (Beta)
A Python client driver for Apache Cassandra. This driver works exclusively with the Cassandra Query Language v3 (CQL3) and Cassandra's native protocol. As such, only Cassandra 1.2+ is supported.
Warning
This driver is currently under heavy development, so the API and layout of packages, modules, classes, and functions are subject to change. There may also be serious bugs, so usage in a production environment is not recommended at this time.
- JIRA
- Mailing List
- IRC: #datastax-drivers on irc.freenode.net (you can use freenode's web-based client)
- API Documentation
Features to be Added
- C extension for encoding/decoding messages
- Connection pool metrics
- Authentication/security feature support
- Twisted, gevent support
- Python 3 support
- IPv6 Support
Installation
A package hasn't been put on pypi yet, so for now, run:
$ sudo pip install futures # install dependency $ sudo python setup.py install
libev support
The driver currently uses Python's asyncore module for
its default event loop. For better performance, libev is
also supported through the pyev python wrapper.
If you're on Linux, you should be able to install libev through a package manager. For example, on Debian/Ubuntu:
$ sudo apt-get install libev
and then install pyev as follows:
$ sudo pip install pyev
If successful, you should be able to use the libev event loop by doing the following
>>> from cassandra.io.libevreactor import LibevConnection >>> from cassandra.cluster import Cluster >>> cluster = Cluster() >>> cluster.connection_class = LibevConnection >>> session = cluster.connect()
License
Copyright 2013, DataStax
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.