I am getting below error while accessing application from one node
ERROR [org.infinispan.interceptors.InvocationContextInterceptor] (default task-64) ISPN000136: Error executing command GetKeyValueCommand, writing keys : org.infinispan.util.concurrent.TimeoutException: ISPN000299: Unable to acquire lock after 15 seconds for key V-HTtf4UgbNiAaKdj9BJJL0TqX8XGd9-3oK_Gc3I and requestor GlobalTransaction:<null>:63:local. Lock is held by GlobalTransaction:<null>:62:local
<!-- change here from REPEATABLE_READ to READ_COMMITTED -->
<transaction locking="OPTIMISTIC" mode="BATCH"/>
<!-- change here from PESSIMISTIC to OPTIMISTIC -->
<file-store passivation="false" purge="false"/>
Root Cause :
A defect or configuration issue in the operating environment is identified as root cause. By default transaction locking in JBoss EAP 7 is "PESSIMISTIC" and locking isolation is "REPEATABLE_READ" , which means that "Pessimistic locking of cache entries effectively ensures that only a single client on a single node ever accesses a given session at any given time." Set the transaction locking as "OPTIMISTIC" and locking isolation as "READ_COMMITTED" so that it will able to serve concurrent requests within the same HTTP session.