[KAFKA-3547] Broker does not disconnect client on unknown request

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.9.0.0, 0.9.0.1
• Fix Version/s: 0.10.0.0
• Component/s: core
• Assignee: Grant Henke
• Reporter: Magnus Edenhill
• Created: 12/Apr/16 07:45
• Updated: 11/May/16 09:58
• Resolved: 12/Apr/16 15:18

Description

A regression in 0.9.0 causes the broker to not close a client connection when receiving an unsupported request.

Two effects of this are:

• the client is not informed that the request was not supported (even though a closed connection is a blunt indication it is infact some indication), the request will (hopefully) just time out on the client after some time, stalling sub-sequent operations.
• the broker leaks the connection until the connection reaper brings it down or the client closes the connection

Issue Links

• duplicates: KAFKA-3593 kafka.network.Processor throws ArrayIndexOutOfBoundsException