in ZOOKEEPER-3769 and ZOOKEEPER-3016 the following type of log lines were showing the problem:
03/24/20 11:16:16,297 [WorkerReceiver[myid=1]] ERROR [org.apache.zookeeper.server.NIOServerCnxnFactory] (NIOServerCnxnFactory.java:92) - Thread Thread[WorkerReceiver[myid=1],5,main] died But I am not sure about the logs on 3.4.14. Also there are multiple threads that can die here, not only the WorkerReceiver. But the death of the thread will always be logged by the NIOServerCnxnFactory. Maybe try to grep on "NIOServerCnxnFactory" and on "died". If you find anything, then look for errors / exceptions around this log line to see what happened. On Wed, Apr 22, 2020 at 6:01 PM blb.dev <bla.ibm....@gmail.com> wrote: > Hi, thank you for the response! > > When you say maybe "some internal listener thread in the leader (zoo3) > died" > is there a particular string I could search in the logs to look for that? > > We plan on upgrading - waiting for 3.6.1 as we've had some issues moving to > 3.6.0. > > > > -- > Sent from: http://zookeeper-user.578899.n2.nabble.com/ >
