This topic describes the system events of E-MapReduce.

Type Event Description State Level
Flow EMR-110401002 A workflow is completed. Normal Info
Flow EMR-110401003 A workflow is submitted. Normal Info
Flow EMR-110401004 A job is submitted. Normal Info
Flow EMR-110401005 A workflow node is started. Normal Info
Flow EMR-110401006 The status of a workflow node is checked. Normal Info
Flow EMR-110401007 A workflow node is completed. Normal Info
Flow EMR-110401008 A workflow node is stopped. Normal Info
Flow EMR-110401009 A workflow node is canceled. Normal Info
Flow EMR-110401010 A workflow is canceled. Normal Info
Flow EMR-110401011 A workflow is restarted. Normal Info
Flow EMR-110401012 A workflow is resumed. Normal Info
Flow EMR-110401013 A workflow is paused. Normal Info
Flow EMR-110401014 A workflow is stopped. Normal Info
Flow EMR-110401015 A workflow node fails. Normal Info
Flow EMR-110401016 A job fails. Normal Info
Flow EMR-210401001 A workflow fails. Normal Info
Flow EMR-210401003 The startup of a workflow node times out. Normal Info
Flow EMR-210401004 The startup of a job times out. Normal Info
StatusNotification StatusCheck The status of a component is checked. Failed Warn
Maintenance Maintenance:HDFS.DataNode.DataTransferPortUnAvailable The data transmission port of a DataNode is unavailable. Critical Critical
Maintenance Maintenance:HDFS.DataNode.ExitUnexpected A DataNode unexpectedly exits. Critical Critical
Maintenance Maintenance:HDFS.DataNode.IpcPortUnAvailable The IPC port of a DataNode is unavailable. Critical Critical
Maintenance Maintenance:HDFS.DataNode.OOM.UnableToCreateNewNativeThread A DataNode cannot create a native thread due to an Out of Memory (OOM) exception that occurs in the DataNode. Critical Critical
Maintenance Maintenance:HDFS.NameNode.IpcPortUnAvailable The IPC port of the NameNode is unavailable. Critical Critical
Maintenance Maintenance:HDFS.NameNode.LoadFsImageException An exception occurs when the NameNode loads FsImage. Critical Critical
Maintenance Maintenance:HDFS.NameNode.LowAvailableDiskSpaceAndInSafeMode The NameNode is in safe mode due to insufficient disk space. Critical Critical
Maintenance Maintenance:HDFS.NameNode.OOM An OOM exception occurs in the NameNode. Critical Critical
Maintenance Maintenance:HDFS.NameNode.ResourceLow The NameNode does not have sufficient resources. Critical Critical
Maintenance Maintenance:HDFS.NameNode.SyncJournalFailed The NameNode fails to synchronize logs. Critical Critical
Maintenance Maintenance:HDFS.ZKFC.ActiveStandbySwitchOccured ZFKC triggers the NameNode failover. Critical Critical
Maintenance Maintenance:HDFS.ZKFC.TransportLevelExceptionInMonitorHealth A transport layer exception occurs when ZKFC monitors the health status of the NameNode. Critical Critical
Maintenance Maintenance:HDFS.ZKFC.UnableToConnectToQuorum ZKFC cannot connect to ZooKeeper Quorum. Critical Critical
Maintenance Maintenance:HDFS.ZKFC.UnableToStartZKFC ZKFC cannot be started. Critical Critical
Maintenance Maintenance:HIVE.HiveMetaStore.DataBaseCommunicationLinkFailure The communication link of the HiveMetaStore database fails. Critical Critical
Maintenance Maintenance:HIVE.HiveMetaStore.DataBaseConnectionFailed Failed to connect to the HiveMetaStore database. Critical Critical
Maintenance Maintenance:HIVE.HiveMetaStore.DataBaseDiskQuotaUsedup The HiveMetaStore database runs out of disk space. Critical Critical
Maintenance Maintenance:HIVE.HiveMetaStore.JdbcCommunicationException A JDC exception occurs in the HiveMetaStore. Critical Critical
Maintenance Maintenance:HIVE.HiveMetaStore.MaxQuestionsExceeded The number of queries for the HiveMetaStore exceeds the upper limit. Critical Critical
Maintenance Maintenance:HIVE.HiveMetaStore.MaxUpdatesExceeded The number of updates for the HiveMetaStore exceeds the upper limit. Critical Critical
Maintenance Maintenance:HIVE.HiveMetaStore.MaxUserConnectionExceeded The number of user connections for the HiveMetaStore exceeds the upper limit. Critical Critical
Maintenance Maintenance:HIVE.HiveMetaStore.OomOccured An OOM exception occurs in the HiveMetaStore. Critical Critical
Maintenance Maintenance:HIVE.HiveMetaStore.ParseConfError An error occurs when the HiveMetastore configuration file. Critical Critical
Maintenance Maintenance:HIVE.HiveMetaStore.RequiredTableMissing The required table of the HiveMetaStore is missing. Critical Critical
Maintenance Maintenance:HIVE.HiveMetaStore.hiveServer2PortUnAvailable The HIVE.HiveMetaStore.hiveServer2Port is unavailable. Critical Critical
Maintenance Maintenance:HIVE.HiveServer2.ConnectToZkTimeout The connection between the HiveServer2 and ZooKeeper times out. Critical Critical
Maintenance Maintenance:HIVE.HiveServer2.ErrorParseConf An error occurs when the HiveServer2 configuration is parsed. Critical Critical
Maintenance Maintenance:HIVE.HiveServer2.ErrorStartingHiveServer An error occurs when the HiveServer2 is stated. Critical Critical
Maintenance Maintenance:HIVE.HiveServer2.FailedInitMetaStoreClient The HiveServer2 fails to initialize the MetaStore client. Critical Critical
Maintenance Maintenance:HIVE.HiveServer2.FailedToConnectToMetaStoreServer The HiveServer2 fails to connect to the MetaStoreServer. Critical Critical
Maintenance Maintenance:HIVE.HiveServer2.HiveServer2OOM An OOM exception occurs in the HiveServer2. Critical Critical
Maintenance Maintenance:HOST.OomFoundInVarLogMessage An OOM exception occurs in the host/var/log/message directory. Critical Critical
Maintenance Maintenance:SPARK.SparkHistory.OomOccured An OOM occurs in the SparkHistory. Critical Critical
Maintenance Maintenance:YARN.JobHistory.ExitUnExpectedly The JobHistory service unexpectedly exits. Critical Critical
Maintenance Maintenance:YARN.JobHistory.StartingError An error occurs when the JobHistory service is stat. Critical Critical
Maintenance Maintenance:YARN.NodeManager.DeadNodeDetected One or more dead NodeManagers are detected. Critical Critical
Maintenance Maintenance:YARN.NodeManager.OOM An OOM exception occurs in a NodeManager. Critical Critical
Maintenance Maintenance:YARN.NodeManager.StartingError An error occurs when a NodeManager is started. Critical Critical
Maintenance Maintenance:YARN.NodeManager.UnHealthyForDiskFailed A NodeManager becomes unhealthy due to disk errors. Critical Critical
Maintenance Maintenance:YARN.ResourceManager.ErrorInStarting An error occurs when starting the ResourceManager. Critical Critical
Maintenance Maintenance:YARN.ResourceManager.ErrorInTransitionToActiveMode An error occurs when switching ResourceManager to the Active mode. Critical Critical
Maintenance Maintenance:YARN.ResourceManager.ExitUnexpected The ResourceManager unexpectedly exited. Critical Critical
Maintenance Maintenance:YARN.ResourceManager.OOM An OOM exception occurs in the ResourceManager. Critical Critical
Maintenance Maintenance:YARN.ResourceManager.UnkownHostException An UnkownHostException occurs in the ResourceManager. Critical Critical
Maintenance Maintenance:YARN.ResourceManager.ZKRMStateStoreCannotConnectZK In the YARN service, ZKRMStateStore cannot connect to ZooKeeper. Critical Critical
Maintenance Maintenance:YARN.TimelineServer.ErrorInStarting An error occurs when the TimelineServer. Critical Critical
Maintenance Maintenance:YARN.TimelineServer.ExistUnexpectedly The TimelineServer unexpectedly exits. Critical Critical
Maintenance Maintenance:ZOOKEEPER.UnableToRunQuorumServer The ZooKeeper cannot run QuorumServer. Critical Critical
Maintenance Agent:Maintenance.EcmAgentTimeout The EcmAgent remains disconnected for a long time. Critical Critical
Maintenance Maintenance:ZOOKEEPER.LeaderPortUnAvailable The LeaderPort of Zookeeper is unavailable. Critical Critical
Maintenance Maintenance:ZOOKEEPER.ClientPortUnAvailable The ClientPort of Zookeeper is unavailable. Critical Critical
Maintenance Maintenance:YARN.NodeManager.UnHealthyNodesExist One or more unhealthy nodes exist in YARN. Critical Critical
Maintenance Maintenance:YARN.ResourceManager.ActiveStandbySwitch A failover occurs in the ResourceManager. Critical Critical
Maintenance Maintenance:YARN.ResourceManager.PortUnAvailable The service port of the ResourceManager is unavailable. Critical Critical
Maintenance Maintenance:STORM.Nimbus.ThriftPortUnAvailable The STORM.Nimbus.ThriftPort is unavailable. Critical Critical
Exception Agent:EcmAgentHeartbeatExpired The heartbeat message of EcmAgent expires. Critical Critical
Maintenance Maintenance:HDFS.DataNode.FailueVolumes One or more damaged disks exist in the DataNode. Critical Critical
Maintenance Maintenance:HDFS.JournalNode.RpcPortUnAvailable The RPC port of the JournalNode is unavailable. Critical Critical
Maintenance Maintenance:HDFS.NameNode.ActiveStandbySwitch A failover occurs in the NameNode. Critical Critical
Maintenance Maintenance:HDFS.NameNode.BlockCapacityNearUsedUp The block capacity of the NameNode is running out. Critical Critical
Maintenance Maintenance:HBASE.HMaster.IpcPortUnAvailable The IPC port of the HBASE.HMaster is unavailable. Critical Critical
Maintenance Maintenance:HBASE.HRegionServer.IpcPortUnAvailable The IPC port of the HBASE.HRegionServer is unavailable. Critical Critical
Maintenance Maintenance:HBASE.ThriftServer.ServicePortUnAvailable The service port of the HBASE.ThriftServer is unavailable. Critical Critical
Maintenance Maintenance:HUE.OozieAdminPortUnAvailable The management port of Oozie is unavailable. Critical Critical
Maintenance Maintenance:HUE.PortUnAvailable The service port of HUE is unavailable. Critical Critical
Maintenance Maintenance:HDFS.NameNode.InSafeMode The NameNode remains in security mode for a long time. Critical Critical
Maintenance Maintenance:HDFS.NameNode.MissingBlock Data block is missing in HDFS. Critical Critical
Maintenance Maintenance:HIVE.HiveMetaStore.PortUnAvailable The port of the HIVE.HiveMetaStore is unavailable. Critical Critical
Scaling Scaling:ScalingActivity:Failed The auto scaling fails. Normal Critical
Scaling Scaling:ScalingActivity:Timeout The auto scaling times out. Normal Critical
Scaling Scaling:ScalingActivity:Rejected The auto scaling is rejected. Normal Critical
Maintenance Maintenance:HOST.HighMemoryUsage The memory usage is high. Critical Critical
Maintenance Maintenance:HOST.LowDiskForMntDisk The available space of /mnt/disk1 is too low. Critical Critical
Maintenance Maintenance:HOST.LowRootfsDisk The disk space available for the root file system is too low. Critical Critical
Maintenance Maintenance:HIVE.HiveServer2.CannotConnectByAnyURIsProvided Unable to connect to HiveServer2 by using the provided URIs. Critical Critical