Re: Zookeeper logging “exception causing close of session 0x0” infinitely in logs

Check this thread. Not sure if it is the same case. you could also enable trace and see if you can find more information. http://zookeeper-user.578899.n2.nabble.com/chatty-error-Exception-causing-close-of-session-0x0-due-to-java-io-IOException-Len-error-1835955314-td7198695.html

Zookeeper logging “exception causing close of session 0x0” infinitely in logs

We have a cluster of 3 kafka+zookeeper. Only on one of our zookeeper servers we are seeing these logs infinitely getting written in zookeeper.out log file WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCxn@1033] - Exception causing close of session 0x0 due to java.io.Exception INFO [NIO