I use telegraf to collect MQTT data and send the to Influx.
In irregular intervals telegraf stops sending data. The instance is still there but seems to do nothing. When telegraf is restarted everything works again as expected.

System info:

Telegraf v1.7.4 (git: release-1.7 578db7e)
Raspbian GNU/Linux 9 (stretch), Rpi 3
trace.txt

stack trace is attached.