Fixed COS exainit not being compatible with Python 3.6

Detail name	Value
Changelog Number	21654
Type	Bug
Status	Resolved
Affected Versions	Exasol 8.0.0
Fix Versions	Exasol 8.34.0, Exasol 8.29.9
Resolution Date	2025-04-02

Description

COS initialization procedure was previously not compatible with Python 3.6, which is the version that comes by default when a user installs the python3 package using dnf. As a result the “c4 update cluster” command might fail with error

File "/usr/lib64/python3.6/functools.py", line 477, in lru_cache
  raise TypeError('Expected maxsize to be an integer or None')

Workaround

The workaround was to install the python3.8 package using dnf like this:

sudo dnf install python3.8
sudo su\nyes | ln -s /usr/bin/python3.8 /usr/local/bin/python3
echo 'export PATH=/usr/local/bin/:$PATH' >> ~/.bashrc

Fix

The initialization procedure was made compatible with Python 3.6.