org.apache.ignite.events

Class JobEvent

java.lang.Object

org.apache.ignite.events.EventAdapter

org.apache.ignite.events.JobEvent

All Implemented Interfaces:

Serializable, Comparable<Event>, Event

public class JobEvent
extends EventAdapter

Grid job event.

Grid events are used for notification about what happens within the grid. Note that by design Ignite keeps all events generated on the local node locally and it provides APIs for performing a distributed queries across multiple nodes:

• IgniteEvents.remoteQuery(org.apache.ignite.lang.IgnitePredicate, long, int...) - asynchronously querying events occurred on the nodes specified, including remote nodes.
• IgniteEvents.localQuery(org.apache.ignite.lang.IgnitePredicate, int...) - querying only local events stored on this local node.
• IgniteEvents.localListen(org.apache.ignite.lang.IgnitePredicate, int...) - listening to local grid events (events from remote nodes not included).

User can also wait for events using method IgniteEvents.waitForLocal(org.apache.ignite.lang.IgnitePredicate, int...).

Events and Performance

Note that by default all events in Ignite are enabled and therefore generated and stored by whatever event storage SPI is configured. Ignite can and often does generate thousands events per seconds under the load and therefore it creates a significant additional load on the system. If these events are not needed by the application this load is unnecessary and leads to significant performance degradation.

It is highly recommended to enable only those events that your application logic requires by using IgniteConfiguration.getIncludeEventTypes() method in Ignite configuration. Note that certain events are required for Ignite's internal operations and such events will still be generated but not stored by event storage SPI if they are disabled in Ignite configuration.

See Also:

EventType.EVT_JOB_CANCELLED, EventType.EVT_JOB_FAILED, EventType.EVT_JOB_FAILED_OVER, EventType.EVT_JOB_FINISHED, EventType.EVT_JOB_MAPPED, EventType.EVT_JOB_QUEUED, EventType.EVT_JOB_REJECTED, EventType.EVT_JOB_RESULTED, EventType.EVT_JOB_STARTED, EventType.EVT_JOB_TIMEDOUT, EventType.EVTS_JOB_EXECUTION, Serialized Form

Constructor Summary

Constructors

Constructor and Description
JobEvent() No-arg constructor.
JobEvent(ClusterNode node, String msg, int type) Creates job event with given parameters.

Method Summary

Modifier and Type	Method and Description
IgniteUuid	jobId() Gets job ID.
void	jobId(IgniteUuid jobId) Sets job ID.
@Nullable ComputeJobResultPolicy	resultPolicy() Gets job result policy.
void	resultPolicy(@Nullable ComputeJobResultPolicy resPlc) Sets job result policy.
String	shortDisplay() Gets a shortened version of toString() result.
String	taskClassName() Gets name of task class that triggered this event.
void	taskClassName(String taskClsName) Sets name of the task class that triggered this event.
String	taskName() Gets name of the task that triggered the event.
void	taskName(String taskName) Sets name of the task that triggered this event.
ClusterNode	taskNode() Get node where parent task of the job has originated.
void	taskNode(ClusterNode taskNode) Sets node where parent task of the job has originated.
IgniteUuid	taskSessionId() Gets task session ID of the task that triggered this event.
void	taskSessionId(IgniteUuid sesId) Sets task session ID of the task that triggered this event.
UUID	taskSubjectId() Gets task subject ID.
void	taskSubjectId(UUID taskSubjId) Sets task subject ID.
String	toString()

Methods inherited from class org.apache.ignite.events.EventAdapter

compareTo, equals, hashCode, id, localOrder, message, message, name, node, node, timestamp, type, type

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

JobEvent

public JobEvent()

No-arg constructor.

JobEvent

public JobEvent(ClusterNode node,
                String msg,
                int type)

Creates job event with given parameters.

Parameters:

node - Node.

msg - Optional message.

type - Event type.

Method Detail

shortDisplay

public String shortDisplay()

Gets a shortened version of toString() result. Suitable for humans to read.

Specified by:

shortDisplay in interface Event

Overrides:

shortDisplay in class EventAdapter

Returns:

Shortened version of toString() result.

taskName

public String taskName()

Gets name of the task that triggered the event.

Returns:

Name of the task that triggered the event.

taskClassName

public String taskClassName()

Gets name of task class that triggered this event.

Returns:

Name of task class that triggered the event.

taskSessionId

public IgniteUuid taskSessionId()

Gets task session ID of the task that triggered this event.

Returns:

Task session ID of the task that triggered the event.

jobId

public IgniteUuid jobId()

Gets job ID.

Returns:

Job ID.

taskName

public void taskName(String taskName)

Sets name of the task that triggered this event.

Parameters:

taskName - Task name to set.

taskClassName

public void taskClassName(String taskClsName)

Sets name of the task class that triggered this event.

Parameters:

taskClsName - Task class name to set.

taskSessionId

public void taskSessionId(IgniteUuid sesId)

Sets task session ID of the task that triggered this event.

Parameters:

sesId - Task session ID to set.

jobId

public void jobId(IgniteUuid jobId)

Sets job ID.

Parameters:

jobId - Job ID to set.

taskNode

public ClusterNode taskNode()

Get node where parent task of the job has originated.

Returns:

Node where parent task of the job has originated.

taskNode

public void taskNode(ClusterNode taskNode)

Sets node where parent task of the job has originated.

Parameters:

taskNode - Node where parent task of the job has originated.

taskSubjectId

public UUID taskSubjectId()

Gets task subject ID.

Returns:

Task subject ID.

taskSubjectId

public void taskSubjectId(UUID taskSubjId)

Sets task subject ID.

Parameters:

taskSubjId - Task subject ID.

resultPolicy

@Nullable
public @Nullable ComputeJobResultPolicy resultPolicy()

Gets job result policy. Not null for EventType.EVT_JOB_RESULTED and EventType.EVT_JOB_FAILED_OVER event types.

Returns:

Result policy.

resultPolicy

public void resultPolicy(@Nullable
                         @Nullable ComputeJobResultPolicy resPlc)

Sets job result policy.

Parameters:

resPlc - New result policy.

toString

public String toString()

Overrides:

toString in class EventAdapter