Paul Chandler created CASSANDRA-16641:
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Summary: Cassandra 4.0 with python 2.7 on Ubuntu
Key: CASSANDRA-16641
URL: https://issues.apache.org/jira/browse/CASSANDRA-16641
Project: Cassandra
Issue Type: Bug
Reporter: Paul Chandler
We have been testing with 4.0~beta2 in our setup for a few weeks and all has
gone very smoothly, however when tried to install 4.0~rc1 we ran into problems
with python versions.
We are on Ubuntu 16.04.7 LTS so use apt to install Cassandra, and this now
gives the following error:
{{The following packages have unmet dependencies:}}{{ cassandra : Depends:
python3 (>= 3.6) but 3.5.1-3 is to be installed}}{{E: Unable to correct
problems, you have held broken packages.}}
Looking at the apt packaging the requirement for python has changed from 2.7 to
3.6 between beta4 and rc1.
I have found https://issues.apache.org/jira/browse/CASSANDRA-16396 which says
it needed to be python 3.6, however reading this ticket this seems to imply 2.7
is still supported https://issues.apache.org/jira/browse/CASSANDRA-15659
Also the code for for cqlsh says it supports 2.7 as well:
[https://github.com/apache/cassandra/blob/b0c50c10dbc443a05662b111a971a65cafa258d5/bin/cqlsh#L65]
All our clusters are currently on Ubuntu 16.04 which does not come with python
3.6, so this is going to be a major pain to upgrade them to 4.0, as I don't
want to install it via a third party PPA if I can help it.
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