Mikhail Geyer questions

• How to sort In Elasticsearch by parent and nested fields at the same time?
• When Kafka send acknowledgement if acks=all and all replicas are healthy?
• @MockBean and @Autowired of the same service in one test class
• How Python reads a file when it was deleted after being opened
• Difference between subprocess.Popen preexec_fn and start_new_session in python

Mikhail Geyer answers