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https://issues.apache.org/jira/browse/ZOOKEEPER-832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17501964#comment-17501964
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Antonio Antonucci commented on ZOOKEEPER-832:
---------------------------------------------
Hi everybody, I am having a similar issue with kafka_2.13-3.1.0, which includes
zookeeper 3.6.3–6401e4ad2087061bc6b9f80dec2d69f2e3c8660a. OS is Ubuntu 21.10
Two things to highlight:
* 1) The issue I am having is:
INFO Refusing session request for client /192.168.1.163:42230 as it has seen
zxid 0xa25 our last zxid is 0x23 client must try another server
(org.apache.zookeeper.server.ZooKeeperServer)
>> Initially the zookeeper datadir was configured as per default under /tmp.
>> Following this error I have moved the datadir under /opt/zookeeper, deleted
>> all the logs directory content and rebooted the server.
>> Soon after the rebooting, the errror message was:
INFO Refusing session request for client /192.168.1.163:41738 as it has seen
zxid 0xa25 our last zxid is 0x0 client must try another server
(org.apache.zookeeper.server.ZooKeeperServer)
>> However once I started Kafka, the error went back to the original "... it
>> has seen zxid 0xa25 our last zxid is 0x23.. "
>> I don't know how to sort this out
* 2) I have tried to run the ZkWorkarounderMultiThreaded java file, however I
am getting the following errors:
ZkWorkarounderMultiThreaded.java
ZkWorkarounderMultiThreaded.java:40: error: cannot access ACL
zk.create(path, data, Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
^
class file for org.apache.zookeeper.data.ACL not found
ZkWorkarounderMultiThreaded.java:45: error: cannot access Stat
zk.setData(path, data, zk.exists(path, true).getVersion());
^
class file for org.apache.zookeeper.data.Stat not found
ZkWorkarounderMultiThreaded.java:58: error: cannot find symbol
ExecutorService es = Executors.newCachedThreadPool();
^
symbol: class ExecutorService
location: class ZkWorkarounderMultiThreaded
ZkWorkarounderMultiThreaded.java:58: error: cannot find symbol
ExecutorService es = Executors.newCachedThreadPool();
^
symbol: variable Executors
location: class ZkWorkarounderMultiThreaded
4 errors
error: compilation failed
>> I have only included the following lines in the java code, however I guess
>> things have changed with zk 3.6.3?
package core.framework.zookeeper;
import java.io.IOException;
import java.util.Date;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.WatchedEvent;
import org.apache.zookeeper.Watcher;
import org.apache.zookeeper.Watcher.Event.KeeperState;
import org.apache.zookeeper.ZooDefs.Ids;
import org.apache.zookeeper.ZooKeeper;
import org.apache.zookeeper.KeeperException;
>> I don't literally know how to sort this out.
>> Can somebody help me please?
> Invalid session id causes infinite loop during automatic reconnect
> ------------------------------------------------------------------
>
> Key: ZOOKEEPER-832
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-832
> Project: ZooKeeper
> Issue Type: Bug
> Components: server
> Affects Versions: 3.4.5, 3.5.0, 3.4.11
> Environment: All
> Reporter: Ryan Holmes
> Assignee: Mohammad Arshad
> Priority: Critical
> Attachments: ZOOKEEPER-832.patch, ZOOKEEPER-832.patch,
> ZOOKEEPER-832.patch, ZOOKEEPER-832.patch, ZOOKEEPER-832.patch,
> ZOOKEEPER-832.patch, ZOOKEEPER-832.patch, ZOOKEEPER-832.patch,
> ZOOKEEPER-832.patch, ZOOKEEPER-832.patch
>
>
> Steps to reproduce:
> 1.) Connect to a standalone server using the Java client.
> 2.) Stop the server.
> 3.) Delete the contents of the data directory (i.e. the persisted session
> data).
> 4.) Start the server.
> The client now automatically tries to reconnect but the server refuses the
> connection because the session id is invalid. The client and server are now
> in an infinite loop of attempted and rejected connections. While this
> situation represents a catastrophic failure and the current behavior is not
> incorrect, it appears that there is no way to detect this situation on the
> client and therefore no way to recover.
> The suggested improvement is to send an event to the default watcher
> indicating that the current state is "session invalid", similar to how the
> "session expired" state is handled.
> Server log output (repeats indefinitely):
> 2010-08-05 11:48:08,283 - INFO
> [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn$Factory@250] -
> Accepted socket connection from /127.0.0.1:63292
> 2010-08-05 11:48:08,284 - INFO
> [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@751] - Refusing
> session request for client /127.0.0.1:63292 as it has seen zxid 0x44 our last
> zxid is 0x0 client must try another server
> 2010-08-05 11:48:08,284 - INFO
> [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1434] - Closed
> socket connection for client /127.0.0.1:63292 (no session established for
> client)
> Client log output (repeats indefinitely):
> 11:47:17 org.apache.zookeeper.ClientCnxn startConnect INFO line 1000 -
> Opening socket connection to server localhost/127.0.0.1:2181
> 11:47:17 org.apache.zookeeper.ClientCnxn run WARN line 1120 - Session
> 0x12a3ae4e893000a for server null, unexpected error, closing socket
> connection and attempting reconnect
> java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574)
> at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1078)
> 11:47:17 org.apache.zookeeper.ClientCnxn cleanup DEBUG line 1167 - Ignoring
> exception during shutdown input
> java.nio.channels.ClosedChannelException
> at
> sun.nio.ch.SocketChannelImpl.shutdownInput(SocketChannelImpl.java:638)
> at sun.nio.ch.SocketAdaptor.shutdownInput(SocketAdaptor.java:360)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.cleanup(ClientCnxn.java:1164)
> at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1129)
> 11:47:17 org.apache.zookeeper.ClientCnxn cleanup DEBUG line 1174 - Ignoring
> exception during shutdown output
> java.nio.channels.ClosedChannelException
> at
> sun.nio.ch.SocketChannelImpl.shutdownOutput(SocketChannelImpl.java:649)
> at sun.nio.ch.SocketAdaptor.shutdownOutput(SocketAdaptor.java:368)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.cleanup(ClientCnxn.java:1171)
> at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1129)
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