未安装Python Cassandra驱动程序，或者没有安装PYTHONPATH

Question

我在cassandra 2.2.10中运行cqlsh时出现以下错误？有人可以帮我渡过这个障碍：

[root@rac1 site-packages]# $CASSANDRA_PATH/bin/cqlsh

Python Cassandra driver not installed, or not on PYTHONPATH. You might try “pip install cassandra-driver”.

Python: /usr/local/bin/python Module load path: [‘/opt/cassandra/apache-cassandra-2.2.10/bin/../lib/six-1.7.3-py2.py3-none-any.zip’, ‘/opt/cassandra/apache-cassandra-2.2.10/bin/../lib/futures-2.1.6-py2.py3-none-any.zip’, ‘/opt/cassandra/apache-cassandra-2.2.10/bin/../lib/cassandra-driver-internal-only-3.5.0.post0-d8d0456.zip/cassandra-driver-3.5.0.post0-d8d0456’, ‘/opt/cassandra/apache-cassandra-2.2.10/bin’, ‘/usr/local/lib/python2.7/site-packages’, ‘/usr/local/lib/python27.zip’, ‘/usr/local/lib/python2.7’, ‘/usr/local/lib/python2.7/plat-linux2’, ‘/usr/local/lib/python2.7/lib-tk’, ‘/usr/local/lib/python2.7/lib-old’, ‘/usr/local/lib/python2.7/lib-dynload’]

Error: can’t decompress data; zlib not available

Answer 1

卡桑德拉使用在一个zip文件中树捆绑蟒蛇的驱动程序。如果您的Python运行时不是用zlib支持构建的，则它不能使用PYTHONPATH中的zip压缩文件。按照建议直接安装驱动程序（pip install），或者在路径中放置正确配置的Python运行时。