[IMPALA-11977] Fix broken imports on Python 3 and Python 3 object model differences

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 4.3.0
• Fix Version/s: Impala 4.3.0
• Component/s: Infrastructure
• Epic Color: ghx-label-1
• Assignee: Joe McDonnell
• Reporter: Joe McDonnell
• Created: 06/Mar/23 19:29
• Updated: 09/Mar/23 17:37
• Resolved: 09/Mar/23 17:37

Description

Several libraries moved in Python 3. For example, urllib2, httplib, Queue, and several others. See: 

https://python-future.org/compatible_idioms.html#urllib-module

https://python-future.org/compatible_idioms.html#http-module

This is also a good time to fix several warnings about object model differences. _nonzero_ is now _bool, metaclasses are specified differently, iterator next() method is deprecated, objects that implement __eq_ should also implement _hash_, etc.

The pylint checks that could be fixed by this would be:

bad-python3-import
eq-without-hash
metaclass-assignment
next-method-called
nonzero-method
comprehension-escape
exception-escape