@Test public void testPerform() throws Exception { PowerMockito.mockStatic(HostComponentSummary.class); final ServicesUpCheck servicesUpCheck = new ServicesUpCheck(); servicesUpCheck.clustersProvider = new Provider<Clusters>() { @Override public Clusters get() { return clusters; } }; servicesUpCheck.ambariMetaInfo = new Provider<AmbariMetaInfo>() { @Override public AmbariMetaInfo get() { return ambariMetaInfo; } }; Host host1 = Mockito.mock(Host.class); Host host2 = Mockito.mock(Host.class); Host host3 = Mockito.mock(Host.class); Mockito.when(host1.getMaintenanceState(Mockito.anyLong())).thenReturn(MaintenanceState.OFF); Mockito.when(host2.getMaintenanceState(Mockito.anyLong())).thenReturn(MaintenanceState.OFF); Mockito.when(host3.getMaintenanceState(Mockito.anyLong())).thenReturn(MaintenanceState.OFF); final Cluster cluster = Mockito.mock(Cluster.class); Mockito.when(cluster.getClusterId()).thenReturn(1L); Mockito.when(cluster.getCurrentStackVersion()).thenReturn(new StackId("HDP", "2.2")); Mockito.when(clusters.getCluster("cluster")).thenReturn(cluster); Mockito.when(clusters.getHostById(Long.valueOf(1))).thenReturn(host1); Mockito.when(clusters.getHostById(Long.valueOf(2))).thenReturn(host2); Mockito.when(clusters.getHostById(Long.valueOf(3))).thenReturn(host3); final Service hdfsService = Mockito.mock(Service.class); final Service tezService = Mockito.mock(Service.class); final Service amsService = Mockito.mock(Service.class); HashMap<String, Service> clusterServices = new HashMap<String, Service>(); clusterServices.put("HDFS", hdfsService); clusterServices.put("TEZ", tezService); clusterServices.put("AMBARI_METRICS", amsService); Mockito.when(hdfsService.getName()).thenReturn("HDFS"); Mockito.when(tezService.getName()).thenReturn("TEZ"); Mockito.when(amsService.getName()).thenReturn("AMBARI_METRICS"); Mockito.when(hdfsService.isClientOnlyService()).thenReturn(false); Mockito.when(tezService.isClientOnlyService()).thenReturn(true); Mockito.when(amsService.isClientOnlyService()).thenReturn(false); Mockito.when(cluster.getServices()).thenReturn(clusterServices); Mockito.when(ambariMetaInfo.getComponent(Mockito.anyString(), Mockito.anyString(), Mockito.anyString(), Mockito.anyString())).thenAnswer(new Answer<ComponentInfo>() { @Override public ComponentInfo answer(InvocationOnMock invocation) throws Throwable { ComponentInfo anyInfo = Mockito.mock(ComponentInfo.class); if (invocation.getArguments().length > 3 && "DATANODE".equals(invocation.getArguments()[3])) { Mockito.when(anyInfo.getCardinality()).thenReturn("1+"); } else { Mockito.when(anyInfo.getCardinality()).thenReturn(null); } return anyInfo; } }); Map<String, ServiceComponent> hdfsComponents = new HashMap<String, ServiceComponent>(); ServiceComponent nameNode = Mockito.mock(ServiceComponent.class); Mockito.when(nameNode.getName()).thenReturn("NAMENODE"); Mockito.when(nameNode.isClientComponent()).thenReturn(false); Mockito.when(nameNode.isVersionAdvertised()).thenReturn(true); Mockito.when(nameNode.isMasterComponent()).thenReturn(true); ServiceComponent dataNode = Mockito.mock(ServiceComponent.class); Mockito.when(dataNode.getName()).thenReturn("DATANODE"); Mockito.when(dataNode.isClientComponent()).thenReturn(false); Mockito.when(dataNode.isVersionAdvertised()).thenReturn(true); Mockito.when(dataNode.isMasterComponent()).thenReturn(false); ServiceComponent zkfc = Mockito.mock(ServiceComponent.class); Mockito.when(zkfc.getName()).thenReturn("ZKFC"); Mockito.when(zkfc.isClientComponent()).thenReturn(false); Mockito.when(zkfc.isVersionAdvertised()).thenReturn(false); Mockito.when(zkfc.isMasterComponent()).thenReturn(false); hdfsComponents.put("NAMENODE", nameNode); hdfsComponents.put("DATANODE", dataNode); hdfsComponents.put("ZKFC", zkfc); Mockito.when(hdfsService.getServiceComponents()).thenReturn(hdfsComponents); Map<String, ServiceComponent> tezComponents = new HashMap<String, ServiceComponent>(); ServiceComponent tezClient = Mockito.mock(ServiceComponent.class); Mockito.when(tezClient.getName()).thenReturn("TEZ_CLIENT"); Mockito.when(tezClient.isClientComponent()).thenReturn(true); Mockito.when(tezClient.isVersionAdvertised()).thenReturn(true); tezComponents.put("TEZ_CLIENT", tezClient); Mockito.when(tezService.getServiceComponents()).thenReturn(tezComponents); Map<String, ServiceComponent> amsComponents = new HashMap<String, ServiceComponent>(); ServiceComponent metricsCollector = Mockito.mock(ServiceComponent.class); Mockito.when(metricsCollector.getName()).thenReturn("METRICS_COLLECTOR"); Mockito.when(metricsCollector.isClientComponent()).thenReturn(false); Mockito.when(metricsCollector.isVersionAdvertised()).thenReturn(false); ServiceComponent metricsMonitor = Mockito.mock(ServiceComponent.class); Mockito.when(metricsMonitor.getName()).thenReturn("METRICS_MONITOR"); Mockito.when(metricsMonitor.isClientComponent()).thenReturn(false); Mockito.when(metricsMonitor.isVersionAdvertised()).thenReturn(false); amsComponents.put("METRICS_COLLECTOR", metricsCollector); amsComponents.put("METRICS_MONITOR", metricsMonitor); Mockito.when(amsService.getServiceComponents()).thenReturn(amsComponents); final HostComponentSummary hcsNameNode = Mockito.mock(HostComponentSummary.class); final HostComponentSummary hcsDataNode1 = Mockito.mock(HostComponentSummary.class); final HostComponentSummary hcsDataNode2 = Mockito.mock(HostComponentSummary.class); final HostComponentSummary hcsDataNode3 = Mockito.mock(HostComponentSummary.class); final HostComponentSummary hcsZKFC = Mockito.mock(HostComponentSummary.class); final HostComponentSummary hcsTezClient = Mockito.mock(HostComponentSummary.class); final HostComponentSummary hcsMetricsCollector = Mockito.mock(HostComponentSummary.class); final HostComponentSummary hcsMetricsMonitor = Mockito.mock(HostComponentSummary.class); Mockito.when(hcsNameNode.getHostId()).thenReturn(Long.valueOf(1)); Mockito.when(hcsDataNode1.getHostId()).thenReturn(Long.valueOf(1)); Mockito.when(hcsDataNode2.getHostId()).thenReturn(Long.valueOf(2)); Mockito.when(hcsDataNode3.getHostId()).thenReturn(Long.valueOf(3)); Mockito.when(hcsZKFC.getHostId()).thenReturn(Long.valueOf(1)); Mockito.when(hcsTezClient.getHostId()).thenReturn(Long.valueOf(2)); Mockito.when(hcsMetricsCollector.getHostId()).thenReturn(Long.valueOf(1)); Mockito.when(hcsMetricsMonitor.getHostId()).thenReturn(Long.valueOf(1)); List<HostComponentSummary> allHostComponentSummaries = new ArrayList<HostComponentSummary>(); allHostComponentSummaries.add(hcsNameNode); allHostComponentSummaries.add(hcsDataNode1); allHostComponentSummaries.add(hcsDataNode2); allHostComponentSummaries.add(hcsDataNode3); allHostComponentSummaries.add(hcsZKFC); allHostComponentSummaries.add(hcsTezClient); allHostComponentSummaries.add(hcsMetricsCollector); allHostComponentSummaries.add(hcsMetricsMonitor); Mockito.when(HostComponentSummary.getHostComponentSummaries("HDFS", "NAMENODE")).thenReturn(Arrays.asList(hcsNameNode)); Mockito.when(HostComponentSummary.getHostComponentSummaries("HDFS", "DATANODE")).thenReturn(Arrays.asList(hcsDataNode1, hcsDataNode2, hcsDataNode3)); Mockito.when(HostComponentSummary.getHostComponentSummaries("HDFS", "ZKFC")).thenReturn(Arrays.asList(hcsZKFC)); Mockito.when(HostComponentSummary.getHostComponentSummaries("TEZ", "TEZ_CLIENT")).thenReturn(Arrays.asList(hcsTezClient)); Mockito.when(HostComponentSummary.getHostComponentSummaries("AMBARI_METRICS", "METRICS_COLLECTOR")).thenReturn(Arrays.asList(hcsMetricsCollector)); Mockito.when(HostComponentSummary.getHostComponentSummaries("AMBARI_METRICS", "METRICS_MONITOR")).thenReturn(Arrays.asList(hcsMetricsMonitor)); for (HostComponentSummary hcs : allHostComponentSummaries) { Mockito.when(hcs.getDesiredState()).thenReturn(State.INSTALLED); Mockito.when(hcs.getCurrentState()).thenReturn(State.STARTED); } PrerequisiteCheck check = new PrerequisiteCheck(null, null); servicesUpCheck.perform(check, new PrereqCheckRequest("cluster")); Assert.assertEquals(PrereqCheckStatus.PASS, check.getStatus()); Mockito.when(hcsNameNode.getDesiredState()).thenReturn(State.STARTED); Mockito.when(hcsDataNode1.getDesiredState()).thenReturn(State.STARTED); check = new PrerequisiteCheck(null, null); servicesUpCheck.perform(check, new PrereqCheckRequest("cluster")); Assert.assertEquals(PrereqCheckStatus.PASS, check.getStatus()); Mockito.when(hcsZKFC.getCurrentState()).thenReturn(State.INSTALLED); Mockito.when(hcsMetricsCollector.getCurrentState()).thenReturn(State.INSTALLED); Mockito.when(hcsMetricsMonitor.getCurrentState()).thenReturn(State.INSTALLED); check = new PrerequisiteCheck(null, null); servicesUpCheck.perform(check, new PrereqCheckRequest("cluster")); Assert.assertEquals(PrereqCheckStatus.PASS, check.getStatus()); Mockito.when(hcsNameNode.getCurrentState()).thenReturn(State.INSTALLED); Mockito.when(hcsDataNode1.getCurrentState()).thenReturn(State.INSTALLED); check = new PrerequisiteCheck(null, null); servicesUpCheck.perform(check, new PrereqCheckRequest("cluster")); Assert.assertEquals(PrereqCheckStatus.FAIL, check.getStatus()); Mockito.when(hcsNameNode.getCurrentState()).thenReturn(State.STARTED); Mockito.when(hcsDataNode1.getCurrentState()).thenReturn(State.INSTALLED); check = new PrerequisiteCheck(null, null); servicesUpCheck.perform(check, new PrereqCheckRequest("cluster")); Assert.assertEquals(PrereqCheckStatus.PASS, check.getStatus()); Mockito.when(hcsNameNode.getCurrentState()).thenReturn(State.STARTED); Mockito.when(hcsDataNode1.getCurrentState()).thenReturn(State.INSTALLED); Mockito.when(hcsDataNode2.getCurrentState()).thenReturn(State.INSTALLED); check = new PrerequisiteCheck(null, null); servicesUpCheck.perform(check, new PrereqCheckRequest("cluster")); Assert.assertEquals(PrereqCheckStatus.FAIL, check.getStatus()); Assert.assertTrue(check.getFailReason().indexOf("50%") > -1); Mockito.when(host1.getMaintenanceState(Mockito.anyLong())).thenReturn(MaintenanceState.ON); Mockito.when(host3.getMaintenanceState(Mockito.anyLong())).thenReturn(MaintenanceState.ON); check = new PrerequisiteCheck(null, null); servicesUpCheck.perform(check, new PrereqCheckRequest("cluster")); Assert.assertEquals(PrereqCheckStatus.PASS, check.getStatus()); Mockito.when(hcsNameNode.getCurrentState()).thenReturn(State.INSTALLED); Mockito.when(hcsDataNode1.getCurrentState()).thenReturn(State.STARTED); Mockito.when(hcsDataNode2.getCurrentState()).thenReturn(State.STARTED); Mockito.when(host1.getMaintenanceState(Mockito.anyLong())).thenReturn(MaintenanceState.OFF); Mockito.when(host3.getMaintenanceState(Mockito.anyLong())).thenReturn(MaintenanceState.OFF); check = new PrerequisiteCheck(null, null); servicesUpCheck.perform(check, new PrereqCheckRequest("cluster")); Assert.assertEquals(PrereqCheckStatus.FAIL, check.getStatus()); Mockito.when(host1.getMaintenanceState(Mockito.anyLong())).thenReturn(MaintenanceState.ON); check = new PrerequisiteCheck(null, null); servicesUpCheck.perform(check, new PrereqCheckRequest("cluster")); Assert.assertEquals(PrereqCheckStatus.FAIL, check.getStatus()); }
@Override public void perform(PrerequisiteCheck prerequisiteCheck, PrereqCheckRequest request) throws AmbariException { final String clusterName = request.getClusterName(); final Cluster cluster = clustersProvider.get().getCluster(clusterName); List<String> errorMessages = new ArrayList<String>(); Set<String> failedServiceNames = new HashSet<String>(); StackId stackId = cluster.getCurrentStackVersion(); for (Map.Entry<String, Service> serviceEntry : cluster.getServices().entrySet()) { final Service service = serviceEntry.getValue(); if (service.isClientOnlyService()) { continue; } Map<String, ServiceComponent> serviceComponents = service.getServiceComponents(); for (Map.Entry<String, ServiceComponent> component : serviceComponents.entrySet()) { ServiceComponent serviceComponent = component.getValue(); if (serviceComponent.isClientComponent()) { continue; } if (!serviceComponent.isVersionAdvertised()) { continue; } List<HostComponentSummary> hostComponentSummaries = HostComponentSummary.getHostComponentSummaries( service.getName(), serviceComponent.getName()); if (hostComponentSummaries.isEmpty()) { continue; } boolean checkThreshold = false; if (!serviceComponent.isMasterComponent()) { ComponentInfo componentInfo = ambariMetaInfo.get().getComponent(stackId.getStackName(), stackId.getStackVersion(), serviceComponent.getServiceName(), serviceComponent.getName()); String cardinality = componentInfo.getCardinality(); if (null != cardinality && (cardinality.equals("ALL") || cardinality.matches("[1-9].*"))) { checkThreshold = true; } } if (checkThreshold) { int total = hostComponentSummaries.size(); int up = 0; int down = 0; for (HostComponentSummary summary : hostComponentSummaries) { if (isConsideredDown(cluster, serviceComponent, summary)) { down++; } else { up++; } } if ((float) down / total > SLAVE_THRESHOLD) { failedServiceNames.add(service.getName()); String message = MessageFormat.format( "{0}: {1} out of {2} {3} are started; there should be {4,number,percent} started before upgrading.", service.getName(), up, total, serviceComponent.getName(), SLAVE_THRESHOLD); errorMessages.add(message); } } else { for (HostComponentSummary summary : hostComponentSummaries) { if (isConsideredDown(cluster, serviceComponent, summary)) { failedServiceNames.add(service.getName()); String message = MessageFormat.format("{0}: {1} (in {2} on host {3})", service.getName(), serviceComponent.getName(), summary.getCurrentState(), summary.getHostName()); errorMessages.add(message); break; } } } } } if (!errorMessages.isEmpty()) { prerequisiteCheck.setFailedOn(new LinkedHashSet<String>(failedServiceNames)); prerequisiteCheck.setStatus(PrereqCheckStatus.FAIL); prerequisiteCheck.setFailReason( "The following Service Components should be in a started state. Please invoke a service Stop and full Start and try again. " + StringUtils.join(errorMessages, ", ")); } }
ServicesUpCheck extends AbstractCheckDescriptor { @Override public void perform(PrerequisiteCheck prerequisiteCheck, PrereqCheckRequest request) throws AmbariException { final String clusterName = request.getClusterName(); final Cluster cluster = clustersProvider.get().getCluster(clusterName); List<String> errorMessages = new ArrayList<String>(); Set<String> failedServiceNames = new HashSet<String>(); StackId stackId = cluster.getCurrentStackVersion(); for (Map.Entry<String, Service> serviceEntry : cluster.getServices().entrySet()) { final Service service = serviceEntry.getValue(); if (service.isClientOnlyService()) { continue; } Map<String, ServiceComponent> serviceComponents = service.getServiceComponents(); for (Map.Entry<String, ServiceComponent> component : serviceComponents.entrySet()) { ServiceComponent serviceComponent = component.getValue(); if (serviceComponent.isClientComponent()) { continue; } if (!serviceComponent.isVersionAdvertised()) { continue; } List<HostComponentSummary> hostComponentSummaries = HostComponentSummary.getHostComponentSummaries( service.getName(), serviceComponent.getName()); if (hostComponentSummaries.isEmpty()) { continue; } boolean checkThreshold = false; if (!serviceComponent.isMasterComponent()) { ComponentInfo componentInfo = ambariMetaInfo.get().getComponent(stackId.getStackName(), stackId.getStackVersion(), serviceComponent.getServiceName(), serviceComponent.getName()); String cardinality = componentInfo.getCardinality(); if (null != cardinality && (cardinality.equals("ALL") || cardinality.matches("[1-9].*"))) { checkThreshold = true; } } if (checkThreshold) { int total = hostComponentSummaries.size(); int up = 0; int down = 0; for (HostComponentSummary summary : hostComponentSummaries) { if (isConsideredDown(cluster, serviceComponent, summary)) { down++; } else { up++; } } if ((float) down / total > SLAVE_THRESHOLD) { failedServiceNames.add(service.getName()); String message = MessageFormat.format( "{0}: {1} out of {2} {3} are started; there should be {4,number,percent} started before upgrading.", service.getName(), up, total, serviceComponent.getName(), SLAVE_THRESHOLD); errorMessages.add(message); } } else { for (HostComponentSummary summary : hostComponentSummaries) { if (isConsideredDown(cluster, serviceComponent, summary)) { failedServiceNames.add(service.getName()); String message = MessageFormat.format("{0}: {1} (in {2} on host {3})", service.getName(), serviceComponent.getName(), summary.getCurrentState(), summary.getHostName()); errorMessages.add(message); break; } } } } } if (!errorMessages.isEmpty()) { prerequisiteCheck.setFailedOn(new LinkedHashSet<String>(failedServiceNames)); prerequisiteCheck.setStatus(PrereqCheckStatus.FAIL); prerequisiteCheck.setFailReason( "The following Service Components should be in a started state. Please invoke a service Stop and full Start and try again. " + StringUtils.join(errorMessages, ", ")); } } }
ServicesUpCheck extends AbstractCheckDescriptor { @Override public void perform(PrerequisiteCheck prerequisiteCheck, PrereqCheckRequest request) throws AmbariException { final String clusterName = request.getClusterName(); final Cluster cluster = clustersProvider.get().getCluster(clusterName); List<String> errorMessages = new ArrayList<String>(); Set<String> failedServiceNames = new HashSet<String>(); StackId stackId = cluster.getCurrentStackVersion(); for (Map.Entry<String, Service> serviceEntry : cluster.getServices().entrySet()) { final Service service = serviceEntry.getValue(); if (service.isClientOnlyService()) { continue; } Map<String, ServiceComponent> serviceComponents = service.getServiceComponents(); for (Map.Entry<String, ServiceComponent> component : serviceComponents.entrySet()) { ServiceComponent serviceComponent = component.getValue(); if (serviceComponent.isClientComponent()) { continue; } if (!serviceComponent.isVersionAdvertised()) { continue; } List<HostComponentSummary> hostComponentSummaries = HostComponentSummary.getHostComponentSummaries( service.getName(), serviceComponent.getName()); if (hostComponentSummaries.isEmpty()) { continue; } boolean checkThreshold = false; if (!serviceComponent.isMasterComponent()) { ComponentInfo componentInfo = ambariMetaInfo.get().getComponent(stackId.getStackName(), stackId.getStackVersion(), serviceComponent.getServiceName(), serviceComponent.getName()); String cardinality = componentInfo.getCardinality(); if (null != cardinality && (cardinality.equals("ALL") || cardinality.matches("[1-9].*"))) { checkThreshold = true; } } if (checkThreshold) { int total = hostComponentSummaries.size(); int up = 0; int down = 0; for (HostComponentSummary summary : hostComponentSummaries) { if (isConsideredDown(cluster, serviceComponent, summary)) { down++; } else { up++; } } if ((float) down / total > SLAVE_THRESHOLD) { failedServiceNames.add(service.getName()); String message = MessageFormat.format( "{0}: {1} out of {2} {3} are started; there should be {4,number,percent} started before upgrading.", service.getName(), up, total, serviceComponent.getName(), SLAVE_THRESHOLD); errorMessages.add(message); } } else { for (HostComponentSummary summary : hostComponentSummaries) { if (isConsideredDown(cluster, serviceComponent, summary)) { failedServiceNames.add(service.getName()); String message = MessageFormat.format("{0}: {1} (in {2} on host {3})", service.getName(), serviceComponent.getName(), summary.getCurrentState(), summary.getHostName()); errorMessages.add(message); break; } } } } } if (!errorMessages.isEmpty()) { prerequisiteCheck.setFailedOn(new LinkedHashSet<String>(failedServiceNames)); prerequisiteCheck.setStatus(PrereqCheckStatus.FAIL); prerequisiteCheck.setFailReason( "The following Service Components should be in a started state. Please invoke a service Stop and full Start and try again. " + StringUtils.join(errorMessages, ", ")); } } ServicesUpCheck(); }
ServicesUpCheck extends AbstractCheckDescriptor { @Override public void perform(PrerequisiteCheck prerequisiteCheck, PrereqCheckRequest request) throws AmbariException { final String clusterName = request.getClusterName(); final Cluster cluster = clustersProvider.get().getCluster(clusterName); List<String> errorMessages = new ArrayList<String>(); Set<String> failedServiceNames = new HashSet<String>(); StackId stackId = cluster.getCurrentStackVersion(); for (Map.Entry<String, Service> serviceEntry : cluster.getServices().entrySet()) { final Service service = serviceEntry.getValue(); if (service.isClientOnlyService()) { continue; } Map<String, ServiceComponent> serviceComponents = service.getServiceComponents(); for (Map.Entry<String, ServiceComponent> component : serviceComponents.entrySet()) { ServiceComponent serviceComponent = component.getValue(); if (serviceComponent.isClientComponent()) { continue; } if (!serviceComponent.isVersionAdvertised()) { continue; } List<HostComponentSummary> hostComponentSummaries = HostComponentSummary.getHostComponentSummaries( service.getName(), serviceComponent.getName()); if (hostComponentSummaries.isEmpty()) { continue; } boolean checkThreshold = false; if (!serviceComponent.isMasterComponent()) { ComponentInfo componentInfo = ambariMetaInfo.get().getComponent(stackId.getStackName(), stackId.getStackVersion(), serviceComponent.getServiceName(), serviceComponent.getName()); String cardinality = componentInfo.getCardinality(); if (null != cardinality && (cardinality.equals("ALL") || cardinality.matches("[1-9].*"))) { checkThreshold = true; } } if (checkThreshold) { int total = hostComponentSummaries.size(); int up = 0; int down = 0; for (HostComponentSummary summary : hostComponentSummaries) { if (isConsideredDown(cluster, serviceComponent, summary)) { down++; } else { up++; } } if ((float) down / total > SLAVE_THRESHOLD) { failedServiceNames.add(service.getName()); String message = MessageFormat.format( "{0}: {1} out of {2} {3} are started; there should be {4,number,percent} started before upgrading.", service.getName(), up, total, serviceComponent.getName(), SLAVE_THRESHOLD); errorMessages.add(message); } } else { for (HostComponentSummary summary : hostComponentSummaries) { if (isConsideredDown(cluster, serviceComponent, summary)) { failedServiceNames.add(service.getName()); String message = MessageFormat.format("{0}: {1} (in {2} on host {3})", service.getName(), serviceComponent.getName(), summary.getCurrentState(), summary.getHostName()); errorMessages.add(message); break; } } } } } if (!errorMessages.isEmpty()) { prerequisiteCheck.setFailedOn(new LinkedHashSet<String>(failedServiceNames)); prerequisiteCheck.setStatus(PrereqCheckStatus.FAIL); prerequisiteCheck.setFailReason( "The following Service Components should be in a started state. Please invoke a service Stop and full Start and try again. " + StringUtils.join(errorMessages, ", ")); } } ServicesUpCheck(); @Override void perform(PrerequisiteCheck prerequisiteCheck, PrereqCheckRequest request); }
ServicesUpCheck extends AbstractCheckDescriptor { @Override public void perform(PrerequisiteCheck prerequisiteCheck, PrereqCheckRequest request) throws AmbariException { final String clusterName = request.getClusterName(); final Cluster cluster = clustersProvider.get().getCluster(clusterName); List<String> errorMessages = new ArrayList<String>(); Set<String> failedServiceNames = new HashSet<String>(); StackId stackId = cluster.getCurrentStackVersion(); for (Map.Entry<String, Service> serviceEntry : cluster.getServices().entrySet()) { final Service service = serviceEntry.getValue(); if (service.isClientOnlyService()) { continue; } Map<String, ServiceComponent> serviceComponents = service.getServiceComponents(); for (Map.Entry<String, ServiceComponent> component : serviceComponents.entrySet()) { ServiceComponent serviceComponent = component.getValue(); if (serviceComponent.isClientComponent()) { continue; } if (!serviceComponent.isVersionAdvertised()) { continue; } List<HostComponentSummary> hostComponentSummaries = HostComponentSummary.getHostComponentSummaries( service.getName(), serviceComponent.getName()); if (hostComponentSummaries.isEmpty()) { continue; } boolean checkThreshold = false; if (!serviceComponent.isMasterComponent()) { ComponentInfo componentInfo = ambariMetaInfo.get().getComponent(stackId.getStackName(), stackId.getStackVersion(), serviceComponent.getServiceName(), serviceComponent.getName()); String cardinality = componentInfo.getCardinality(); if (null != cardinality && (cardinality.equals("ALL") || cardinality.matches("[1-9].*"))) { checkThreshold = true; } } if (checkThreshold) { int total = hostComponentSummaries.size(); int up = 0; int down = 0; for (HostComponentSummary summary : hostComponentSummaries) { if (isConsideredDown(cluster, serviceComponent, summary)) { down++; } else { up++; } } if ((float) down / total > SLAVE_THRESHOLD) { failedServiceNames.add(service.getName()); String message = MessageFormat.format( "{0}: {1} out of {2} {3} are started; there should be {4,number,percent} started before upgrading.", service.getName(), up, total, serviceComponent.getName(), SLAVE_THRESHOLD); errorMessages.add(message); } } else { for (HostComponentSummary summary : hostComponentSummaries) { if (isConsideredDown(cluster, serviceComponent, summary)) { failedServiceNames.add(service.getName()); String message = MessageFormat.format("{0}: {1} (in {2} on host {3})", service.getName(), serviceComponent.getName(), summary.getCurrentState(), summary.getHostName()); errorMessages.add(message); break; } } } } } if (!errorMessages.isEmpty()) { prerequisiteCheck.setFailedOn(new LinkedHashSet<String>(failedServiceNames)); prerequisiteCheck.setStatus(PrereqCheckStatus.FAIL); prerequisiteCheck.setFailReason( "The following Service Components should be in a started state. Please invoke a service Stop and full Start and try again. " + StringUtils.join(errorMessages, ", ")); } } ServicesUpCheck(); @Override void perform(PrerequisiteCheck prerequisiteCheck, PrereqCheckRequest request);  }