Consumer teardown sometimes result in endless TERMINATE spam

[atamon]

The log messages look like:

{"name":"kafka-cache","hostname":"f03ec9a93ea4","pid":1,"level":20,"msg":"checkTopicExists.event.log { severity: 7,\n  fac: 'TERMINATE',\n  message:\n   '[thrd:kafka:9092/bootstrap]: kafka:9092/bootstrap: Handle is terminating: failed 0 request(s) in retry+outbuf' }","time":"2018-12-10T10:18:48.616Z","v":0}

The full logs involved:
kafka-cache-terminate-spam.txt