[KAFKA-9442] Kafka connect REST API times out when trying to create a connector

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.3.1
• Component/s: connect

Environment

Kafka - Amazon MSK running version 2.3.1 with only Plaintext configured
Connect - Docker image version : latest (5.4.0) running on Amazon ECS cluster with tasks configured. I have attached a snapshot of the environment variables passed to the image. 

• Assignee: Unassigned
• Reporter: Kedar Shenoy
• Created: 15/Jan/20 23:52
• Updated: 15/Jan/20 23:52

Description

REST API for some resources results in a timeout and there is no exception in the logs. 

Summary of what was done so far:

• Kafka connect docker image running as a ECS service with 2 tasks 
  • Service starts up and creates the 3 topics as expected.
  • There are a few warnings during start up but no errors - logs attached
• REST API 
  • Root resource / returns the connect version.
  • GET call to /connectors returns a empty list as expected.
  • wrong resource e.g. /connectors1 returns a 404 
  • GET call with a wrong id results in a timeout e,g, /connectors/abc where abc does not exist
  • POST call to create a connector config results in timeout
  • POST call to create a connector with some wrong data returns a 400 e.g. providing different values for attribute "name" in top level vs config entry