java.lang.NullPointerException in Mid Server Logs

[ersureshbe]

Hi Team,

Recently, i facing below error from Mid Server Logs. Can you please help me know how to resolve it?

java.lang.NullPointerException

at java.util.concurrent.ConcurrentHashMap.replaceNode(ConcurrentHashMap.java:1106)

at java.util.concurrent.ConcurrentHashMap.remove(ConcurrentHashMap.java:1097)

at org.cometd.common.AbstractClientSession.unregisterSubscriber(AbstractClientSession.java:291)

at org.cometd.common.AbstractClientSession.receive(AbstractClientSession.java:215)

at org.cometd.client.BayeuxClient.failMessage(BayeuxClient.java:990)

at org.cometd.client.BayeuxClient.failMessages(BayeuxClient.java:965)

at org.cometd.client.BayeuxClient.terminate(BayeuxClient.java:894)

at org.cometd.client.BayeuxClient$DisconnectedState.execute(BayeuxClient.java:1507)

at org.cometd.client.BayeuxClient.updateBayeuxClientState(BayeuxClient.java:1082)

at org.cometd.client.BayeuxClient.disconnect(BayeuxClient.java:520)

at org.cometd.client.BayeuxClient.disconnect(BayeuxClient.java:515)

at org.cometd.client.BayeuxClient.disconnect(BayeuxClient.java:567)

at com.snc.glide.amb.AMBClient.disconnectBayeux(AMBClient.java:177)

at com.snc.glide.amb.AMBClient.disconnect(AMBClient.java:149)

at com.service_now.mid.amb.AMBClientProvider.disconnect(AMBClientProvider.java:149)

at com.service_now.mid.amb.AMBClientProvider.connect(AMBClientProvider.java:134)

at com.service_now.mid.amb.AMBClientProvider.executeInLock(AMBClientProvider.java:165)

at com.service_now.mid.amb.AMBClientProvider.lambda$initialize$15(AMBClientProvider.java:48)

at java.lang.Thread.run(Thread.java:745)

[Ankur Bawiskar]

Hi Suresh,

The   null pointer exception is thrown when a code attempts to use null in a case where an object is required. Try adding debug statements in your mid server script include and check at which point is breaking.

Mark Correct if this solves your issue and also hit Like and Helpful if you find my response worthy based on the impact.

Thanks

Ankur

[Ankur Bawiskar]

Hi Suresh,

Any update on this? Can you mark my answer as correct, helpful and hit like if you were able to achieve your requirement. This helps in removing this question from unanswered list and helps others to search similar question quicker. Thanks in advance.

Regards

Ankur

[Ankur Bawiskar]

Hi Suresh,

Any update on this?

Can you mark my answer as correct, helpful and hit like if you were able to achieve the requirement. This helps in removing this question from unanswered list and helps users to learn from your thread. Thanks in advance.

Regards

Ankur

[kiranbahl27]

Hi Ankur We recently implemented CMDB and Discovery into ServiceNow. The midservers are used by discovery and other integration processes. Our The server teams will support the actual servers, but there are software components, such as Java. does ServiceNow upgrade Java or the mid server software