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AttilaDonath Member since 2016 9 posts
Cognizant
Posted: 3 years ago
Last activity: 2 years 11 months ago
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Errors on JBoss server: PRESENCECLEANER_DAEMON, ConcurrentModificationException

Hi,

I have a Pega 7.3 installed on a JBoss server (7.0 EAP).
It generally works, but I have a lot of errors which stacktrace end with lines like these:

Caused by: com.pega.pegarules.pub.PRException: Failed to execute Resource Adapter function: PRESENCECLEANER_DAEMON {ExecutionDelay=18, NodeID=e326d698c9e20b4dce52b25451054687, ClientID=PegaRULES-PresenceS
essionStateTrackerDaemon}
From: (unknown) 
        at com.pega.pegarules.session.internal.async.BatchUtils.callRAClient(BatchUtils.java:136)
        at com.pega.pegarules.session.internal.presence.PresenceSessionStateTrackerDaemon.requeueETierInvocation(PresenceSessionStateTrackerDaemon.java:176)
        ... 164 more
Caused by: java.util.ConcurrentModificationException
        at java.util.HashMap$HashIterator.nextNode(HashMap.java:1437)
        at java.util.HashMap$EntryIterator.next(HashMap.java:1471)
        at java.util.HashMap$EntryIterator.next(HashMap.java:1469)
        at java.util.HashMap.putMapEntries(HashMap.java:511)
        at java.util.HashMap.putAll(HashMap.java:784)
        at com.pega.pegarules.resadap.RAClient.execute(RAClient.java:213)
        at com.pega.pegarules.session.internal.async.BatchUtils.callRAClient(BatchUtils.java:132)
        ... 165 more

I have seen many ConcurrentModificationException issues and solutions listed on PDN, but they look different, the PRESENCECLEANER_DAEMON part do not appear in them.

Has anyone encountered this error before? What could be the root cause of it and what is the possible fix?

Best regards,
Attila

***Updated by moderator: Lochan to add SR details***

System Administration SR Created
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