Java heap is consumed by org.wildfly.transaction.client.provider.remoting.TransactionClientChannel

Environment

• JBoss Enterprise Application Platform (EAP) 7.x

Issue

• We face OutOfMemoryErrors with high heap consumption in org.wildfly.transaction.client.provider.remoting.TransactionClientChannels peerTransactionMap:

Class Name                                                                             | Shallow Heap | Retained Heap
----------------------------------------------------------------------------------------------------------------------
org.wildfly.transaction.client.provider.remoting.TransactionClientChannel @ 0x641980cd8|           32 | 1,007,952,088
|- peerTransactionMap org.jboss.remoting3._private.IntIndexHashMap @ 0x641980cf8       |           32 | 1,007,952,056
----------------------------------------------------------------------------------------------------------------------

Resolution

• Update to EAP 7.4.5+ and use its updated jboss-client.jar (wildfly-transaction-client-1.1.15.Final-redhat-00001+ specifically is the independent client jar providing the fix)

Root Cause

• cve-2022-0853

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