Logging chokes on BlockingIOError: write could not complete without blocking

Question

I recently ported my scripts from 2.x to 3.x. During production runs through automation (rundeck) we are seeing errors caused by the logger not handling blocking I/O. Any ideas how to resolve would be great.

• Ubuntu 18.04.1 LTS
• Python 3.6.7

--- Logging error ---
Traceback (most recent call last):
  File "/usr/lib/python3.6/logging/__init__.py", line 998, in emit
    self.flush()
  File "/usr/lib/python3.6/logging/__init__.py", line 978, in flush
    self.stream.flush()
BlockingIOError: [Errno 11] write could not complete without blocking

Answer 1

I was getting the same error on CI builds. It looks like it was a capacity issue with the output stream. After reducing the log output, the errors went away.