[KAFKA-6893] Processors created after acceptor started which can cause in a brief refusal to accept connections

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.1.0
• Fix Version/s: 1.1.1
• Assignee: Rajini Sivaram
• Reporter: Ryan P
• Created: 10/May/18 18:58
• Updated: 20/Jun/18 18:33
• Resolved: 10/May/18 21:23

Description

The acceptor starts before the the processor threads are actually created which creates a very small window in which connections to the broker will fail. When the acceptor takes on a new connection an illegal arithmetic exception is thrown as shown below. 

 

Exception: / by zero
at kafka.network.Acceptor.run(SocketServer.scala:391)
at java.lang.Thread.run(Thread.java:748)
[2018-05-09 15:34:05,153] ERROR Error while accepting connection (kafka.network.Acceptor)
java.lang.ArithmeticException: / by zero
at kafka.network.Acceptor.run(SocketServer.scala:391)
at java.lang.Thread.run(Thread.java:748)
[2018-05-09 15:34:05,153] ERROR Error while accepting connection (kafka.network.Acceptor)
java.lang.ArithmeticException: / by zero
at kafka.network.Acceptor.run(SocketServer.scala:391)
at java.lang.Thread.run(Thread.java:748)
[2018-05-09 15:34:05,153] INFO Awaiting socket connections on lontkfk02.mwam.local:9093. (kafka.network.Acceptor)
[2018-05-09 15:34:05,268] INFO [SocketServer brokerId=2] Started 2 acceptor threads (kafka.network.SocketServer)

 

 

Issue Links

• is duplicated by: KAFKA-6982 java.lang.ArithmeticException: / by zero
• links to: GitHub Pull Request #4999