Anyone?

 


Sent: Saturday, July 30, 2022 at 9:14 PM
From: pod...@gmx.com
To: users@kafka.apache.org
Subject: An existing connection was forcibly closed by the remote host

 
Hi,
 
I start to learn Kafka and.. I have first problem.
I started Zookeeper, I started Kafka - both on localhost. Seems all is fine. 
But when I try to execute command:
 
zookeeper-shell.bat localhost:2181 ls /brokers/ids
 
I get error:
 
Connecting to localhost:2181
WATCHER::
WatchedEvent state:SyncConnected type:None path:null
[0]
[2022-07-30 19:54:22,524] ERROR Exiting JVM with code 0 
(org.apache.zookeeper.util.ServiceUtils)
 
And in Zookeeper:
 
[2022-07-30 19:54:53,335] INFO Expiring session 0x10000190aa20001, timeout of 
30000ms exceeded (org.apache.zookeeper.server.ZooKeeperServer)
[2022-07-30 19:58:05,393] WARN Close of session 0x10000190aa20002 
(org.apache.zookeeper.server.NIOServerCnxn)
java.io.IOException: An existing connection was forcibly closed by the remote 
host
        at java.base/sun.nio.ch.SocketDispatcher.read0(Native Method)
        at java.base/sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43)
        at java.base/sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:276)
        at java.base/sun.nio.ch.IOUtil.read(IOUtil.java:245)
        at java.base/sun.nio.ch.IOUtil.read(IOUtil.java:223)
        at 
java.base/sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:358)
        at 
org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:324)
        at 
org.apache.zookeeper.server.NIOServerCnxnFactory$IOWorkRequest.doWork(NIOServerCnxnFactory.java:522)
        at 
org.apache.zookeeper.server.WorkerService$ScheduledWorkRequest.run(WorkerService.java:154)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)
 
 
server.properties:
listeners=PLAINTEXT://localhost:9092
advertised.listeners=PLAINTEXT://localhost:9092
 
zookeeper.connection.timeout.ms=18000
 
zookeeper.properties:
clientPort=2181
maxSessionTimeout=18000
 
What can be the reason?

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