[jira] [Created] (IGNITE-15343) NullPointerException occurs when restarting ignite client application

["Franco Po (Jira)" <ji...@apache.org>]

Franco Po created IGNITE-15343:
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             Summary: NullPointerException occurs when restarting ignite client application
                 Key: IGNITE-15343
                 URL: https://issues.apache.org/jira/browse/IGNITE-15343
             Project: Ignite
          Issue Type: Bug
            Reporter: Franco Po
         Attachments: failed_startup-ignite_info.1st.attempt.log, failed_startup-ignite_info.2nd.attempt.log, successful_startup-ignite_info.log

I upgraded one of my API backend applications from Apache Ignite 2.6 to GridGain Community Edition 8.8.5 successfully in live environment a couple of months ago. The entire setup is 2 instances of this ignite client application plus a cluster of 2 ignite server instances. A planned maintenance needed to restart the ignite client application. However, it couldn't be started again due to a sequence of below exceptions (see failed_startup-ignite_info.1st.attempt.log, failed_startup-ignite_info.2nd.attempt.log for full log):

1. java.io.IOException: Failed to get acknowledge for message: TcpDiscoveryClientMetricsUpdateMessage [super=TcpDiscoveryAbstractMessage [sndNodeId=null, id=fef7e5e5b71-b588bb65-6fe8-4aff-8f17-4a9e8733369b, verifierNodeId=null, topVer=0, pendingIdx=0, failedNodes=null, isClient=true]]
2. java.net.SocketException: Socket is closed
3. java.lang.NullPointerException: null
4. org.apache.ignite.IgniteCheckedException: Node stopped

I could restart same ignite client applications running in hot standby environment where the ignite server contains no active data (see successful_startup-ignite_info.log).

If anyone can provide insight as to how I can resolve this, that would be greatly appreciated.



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