有人可以帮我解决以下错误吗：
3:02:19,562 ERROR [org.springframework.extensions.webscripts.AbstractRuntime] Exception from executeScript - redirecting to status template error: 10021817710 Wrapped Exception (with status template): [CONCURRENT_MAP_GET] Operation Timeout (with no response!): 20000
org.springframework.extensions.webscripts.WebScriptException: 10021817710 Wrapped Exception (with status template): [CONCURRENT_MAP_GET] Operation Timeout (with no response!): 20000
at org.springframework.extensions.webscripts.AbstractWebScript.createStatusException(AbstractWebScript.java:1067)
at org.springframework.extensions.webscripts.DeclarativeWebScript.execute(DeclarativeWebScript.java:171)
at org.alfresco.repo.web.scripts.RepositoryContainer$3.execute(RepositoryContainer.java:422)
at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:450)
at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecute(RepositoryContainer.java:491)
at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecuteAs(RepositoryContainer.java:529)
at org.alfresco.repo.web.scripts.RepositoryContainer.executeScript(RepositoryContainer.java:341)
at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:378)
at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:209)
at org.springframework.extensions.webscripts.servlet.WebScriptServlet.service(WebScriptServlet.java:132)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.alfresco.web.app.servlet.GlobalLocalizationFilter.doFilter(GlobalLocalizationFilter.java:61)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1852)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: com.hazelcast.core.OperationTimeoutException: [CONCURRENT_MAP_GET] Operation Timeout (with no response!): 20000
at com.hazelcast.impl.BaseManager$ResponseQueueCall.waitAndGetResult(BaseManager.java:619)
at com.hazelcast.impl.BaseManager$ResponseQueueCall.getRedoAwareResult(BaseManager.java:641)
at com.hazelcast.impl.BaseManager$ResponseQueueCall.getResult(BaseManager.java:636)
at com.hazelcast.impl.BaseManager$RequestBasedCall.getResultAsObject(BaseManager.java:464)
at com.hazelcast.impl.BaseManager$ResponseQueueCall.getResultAsObject(BaseManager.java:555)
at com.hazelcast.impl.BaseManager$RequestBasedCall.getResultAsObject(BaseManager.java:460)
at com.hazelcast.impl.BaseManager$ResponseQueueCall.getResultAsObject(BaseManager.java:555)
at com.hazelcast.impl.BaseManager$RequestBasedCall.objectCall(BaseManager.java:502)
at com.hazelcast.impl.BaseManager$ResponseQueueCall.objectCall(BaseManager.java:555)
at com.hazelcast.impl.BaseManager$RequestBasedCall.objectCall(BaseManager.java:508)
at com.hazelcast.impl.BaseManager$ResponseQueueCall.objectCall(BaseManager.java:555)
at com.hazelcast.impl.ConcurrentMapManager$MGet.get(ConcurrentMapManager.java:1124)
at com.hazelcast.impl.MProxyImpl$MProxyReal.get(MProxyImpl.java:781)
at com.hazelcast.impl.MProxyImpl.get(MProxyImpl.java:114)
at org.alfresco.repo.lock.mem.AbstractLockStore.get(AbstractLockStore.java:61)
at org.alfresco.enterprise.repo.cluster.lock.HazelcastLockStore.get(HazelcastLockStore.java:60)
at sun.reflect.GeneratedMethodAccessor332.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.alfresco.enterprise.repo.cluster.core.ClusteredObjectProxyFactory$AbstractClusteredObjectProxyInvoker.invoke(ClusteredObjectProxyFactory.java:275)
at com.sun.proxy.$Proxy9.get(Unknown Source)
at org.alfresco.repo.lock.mem.LockableAspectInterceptor.invoke(LockableAspectInterceptor.java:90)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at com.sun.proxy.$Proxy10.hasAspect(Unknown Source)
at sun.reflect.GeneratedMethodAccessor261.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.alfresco.repo.tenant.MultiTNodeServiceInterceptor.invoke(MultiTNodeServiceInterceptor.java:104)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at com.sun.proxy.$Proxy10.hasAspect(Unknown Source)
at sun.reflect.GeneratedMethodAccessor261.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.alfresco.repo.service.StoreRedirectorProxyFactory$RedirectorInvocationHandler.invoke(StoreRedirectorProxyFactory.java:215)
at com.sun.proxy.$Proxy28.hasAspect(Unknown Source)
at org.alfresco.repo.node.MLPropertyInterceptor.getPivotNodeRef(MLPropertyInterceptor.java:324)
at org.alfresco.repo.node.MLPropertyInterceptor.invoke(MLPropertyInterceptor.java:163)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.alfresco.enterprise.repo.sync.SyncPropertyInterceptor.invoke(SyncPropertyInterceptor.java:150)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.alfresco.repo.node.NodeRefPropertyMethodInterceptor.invoke(NodeRefPropertyMethodInterceptor.java:198)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at com.sun.proxy.$Proxy10.getProperty(Unknown Source)
at sun.reflect.GeneratedMethodAccessor260.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:196)
at com.sun.proxy.$Proxy10.getProperty(Unknown Source)
at org.alfresco.repo.security.person.PersonServiceImpl.getPersonOrNullImpl(PersonServiceImpl.java:552)
at org.alfresco.repo.security.person.PersonServiceImpl.personExists(PersonServiceImpl.java:516)
at org.alfresco.repo.model.Repository.getFullyAuthenticatedPerson(Repository.java:271)
at org.alfresco.repo.web.scripts.RepositoryContainer.addRepoParameters(RepositoryContainer.java:234)
at org.alfresco.repo.web.scripts.RepositoryContainer.getScriptParameters(RepositoryContainer.java:190)
at org.springframework.extensions.webscripts.AbstractWebScript.createScriptParameters(AbstractWebScript.java:669)
at org.springframework.extensions.webscripts.DeclarativeWebScript.execute(DeclarativeWebScript.java:81)
... 27 more
13:02:19,656 WARN [org.alfresco.enterprise.repo.cluster.cache.HazelcastSimpleCache] Can't get value from cluster for cache HazelcastSimpleCache[cacheName=cache.aclSharedCache], key=AclEntity[ ID=718467, version=2538900, aclId=c51ff8f7-b2de-4891-a40d-85a57e66a09e, isLatest=true, aclVersion=1, inherits=true, inheritsFrom=718466, type=2, inheritedAcl=718467, isVersioned=false, requiresVersion=false, aclChangeSet=68236281]
13:02:19,765 WARN [org.alfresco.enterprise.repo.cluster.cache.HazelcastSimpleCache] Can't get value from cluster for cache HazelcastSimpleCache[cacheName=cache.ticketsCache], key=77b86475f7d72a489685c1b27ed4d908c9e8121c
13:02:19,765 WARN [org.alfresco.enterprise.repo.cluster.cache.HazelcastSimpleCache] Can't get value from cluster for cache HazelcastSimpleCache[cacheName=cache.ticketsCache], key=905318b647d82d3b29ec6c41e0f926a3ffc9bba7
13:02:20,124 WARN [org.alfresco.enterprise.repo.cluster.cache.HazelcastSimpleCache] Can't get value from cluster for cache HazelcastSimpleCache[cacheName=cache.ticketsCache], key=662ceb1110e795ae1ca2a3af0c8380bfdc67c495
13:02:20,312 WARN [org.alfresco.enterprise.repo.cluster.cache.HazelcastSimpleCache] Can't get value from cluster for cache HazelcastSimpleCache[cacheName=cache.ticketsCache], key=cb0b43102deb2f15b71625c047d548998677c8dc
13:02:20,624 ERROR [org.springframework.extensions.webscripts.AbstractRuntime] Exception from executeScript - redirecting to status template error: 10021817712 Wrapped Exception (with status template): [CONCURRENT_MAP_GET] Operation Timeout (with no response!): 20000
org.springframework.extensions.webscripts.WebScriptException: 10021817712 Wrapped Exception (with status template): [CONCURRENT_MAP_GET] Operation Timeout (with no response!): 20000
at org.springframework.extensions.webscripts.AbstractWebScript.createStatusException(AbstractWebScript.java:1067)
at org.springframework.extensions.webscripts.DeclarativeWebScript.execute(DeclarativeWebScript.java:171)
at org.alfresco.repo.web.scripts.RepositoryContainer$3.execute(RepositoryContainer.java:422)
at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:450)
at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecute(RepositoryContainer.java:491)
at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecuteAs(RepositoryContainer.java:529)
at org.alfresco.repo.web.scripts.RepositoryContainer.executeScript(RepositoryContainer.java:341)
at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:378)
at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:209)
at org.springframework.extensions.webscripts.servlet.WebScriptServlet.service(WebScriptServlet.java:132)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.alfresco.web.app.servlet.GlobalLocalizationFilter.doFilter(GlobalLocalizationFilter.java:61)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1852)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: com.hazelcast.core.OperationTimeoutException: [CONCURRENT_MAP_GET] Operation Timeout (with no response!): 20000
什么可能导致它们？当此（以及更多）记录在 Alfresco 日志中时，使用 Alfresco Tomcat 的应用程序就会挂起。我对技术不是很熟悉，但是如果需要任何信息我可以尝试提供
仅在数据库服务器上重新启动 SQL 服务和/或（因为并不总是相同）在应用程序服务器上重新启动 Alfresco 服务才能解决问题，但仅持续几天，然后应用程序会因上述情况而挂起错误。
正如 Orçun Çolak 在评论中提到的，异常来自 hazelcast 缓存集群的超时，但这可能不是实际问题，只是症状。我猜想您的数据库服务器和/或 Alfresco jdbc 连接池上的最大连接数已用完。但是，这应该位于集群节点之一的日志中。
如果再次出现问题，请尝试分析数据库服务器。