Viewing the Event List

The event list displays information about all events in a cluster, such as service restart and service termination.

Events are listed in chronological order by default in the event list, with the most recent events displayed at the top.

Table 1 describes various fields for an event.

**Table 1** Event description
Parameter	Description
Event ID	Specifies the ID of an event.
Event Severity	Specifies the event severity. In versions earlier than MRS 3.x, the cluster event level is as follows: Critical Major Minor Suggestion In MRS 3.x or later, the event level of a cluster is as follows: Critical Major Minor Suggestion
Event Name	Name of the generated event.
Generated	Time when the event is generated.
Location	Specifies the detailed information for locating the event,

**Table 2** Icon description
Icon	Description
	Select an interval for refreshing the event list from the drop-down list. Refresh every 30s Refresh every 60s Stop refreshing
	Click to manually refresh the event list.
Advanced Search	Click Advanced Search. In the displayed event search area, set search criteria and click Search to view the information about specified events. Click Reset to clear the search criteria.

Choose Clusters > Active Clusters and click a cluster name to go to the cluster details page.
Click Alarm Management > Events.
Click Export All.
In the displayed dialog box, select the type and click OK.

**Table 3** Common events
Event ID	Event Name
12019	Stop Service
12020	Delete Service
12021	Stop RoleInstance
12022	Delete RoleInstance
12023	Delete Node
12024	Restart Service
12025	Restart RoleInstance
12026	Manager Switchover
12065	Process Restart
12070	Job Running Succeeded
12071	Job Running Failed
12072	Job killed
12086	Agent Restart
14005	NameNode Switchover
14028	HDFS DiskBalancer Task
14029	Active NameNode enters safe mode and generates new Fsimage
17001	Oozie Workflow Execution Failure
17002	Oozie Scheduled Job Execution Failure
18001	ResourceManager Switchover
18004	JobHistoryServer Switchover
19001	HMaster Failover
20003	Hue Failover
24002	Flume Channel Overflow
25001	LdapServer Failover
27000	DBServer Switchover
38003	Adjusts the topic data storage period
43014	Spark Data Skew
43015	Spark SQL Large Query Results
43016	Spark SQL Execution Timeout
43024	Start JDBCServer
43025	Stop JDBCServer
43026	ZooKeeper Connection Succeeded
43027	Zookeeper Connection Failed