org.apache.ignite.events

Class PartitionsStateValidationEvent

java.lang.Object

org.apache.ignite.events.EventAdapter

org.apache.ignite.events.PartitionsStateValidationEvent

All Implemented Interfaces:

Serializable, Comparable<Event>, Event

public class PartitionsStateValidationEvent
extends EventAdapter

Grid partitions validation 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_PARTITIONS_STATE_VALIDATION_FAILED, EventType.EVT_PARTITIONS_STATE_VALIDATION_SUCCEEDED, Serialized Form

Constructor Summary

Constructors

Constructor and Description
PartitionsStateValidationEvent(ClusterNode node, String msg, int type, Map<String,Set<Integer>> parts, org.apache.ignite.internal.processors.affinity.AffinityTopologyVersion topVer) Creates partitions validation event with given parameters.

Method Summary

Modifier and Type	Method and Description
static PartitionsStateValidationEvent	failedEvent(ClusterNode node, Map<String,Set<Integer>> parts, org.apache.ignite.internal.processors.affinity.AffinityTopologyVersion topVer) Creates failed partition validation state event.
Map<String,Set<Integer>>	parts() Gets map of partitions validation result.
static PartitionsStateValidationEvent	succeededEvent(ClusterNode node, org.apache.ignite.internal.processors.affinity.AffinityTopologyVersion topVer) Creates succeeded partition validation state event.
org.apache.ignite.internal.processors.affinity.AffinityTopologyVersion	topVer() Gets topology version.

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

PartitionsStateValidationEvent

public PartitionsStateValidationEvent(ClusterNode node,
                                      String msg,
                                      int type,
                                      Map<String,Set<Integer>> parts,
                                      org.apache.ignite.internal.processors.affinity.AffinityTopologyVersion topVer)

Creates partitions validation event with given parameters.

Parameters:

node - Node that raised this event.

msg - Optional message.

type - Event type.

parts - Map of cache or group names to the set of partition ids which failed validation.

topVer - Topology version on which the validation happened.

Method Detail

failedEvent

public static PartitionsStateValidationEvent failedEvent(ClusterNode node,
                                                         Map<String,Set<Integer>> parts,
                                                         org.apache.ignite.internal.processors.affinity.AffinityTopologyVersion topVer)

Creates failed partition validation state event.

Parameters:

node - Node that raised this event.

parts - Map of cache or group names to the set of partition ids which failed validation.

topVer - Topology version on which the validation failed.

Returns:

Partitions state validation event.

succeededEvent

public static PartitionsStateValidationEvent succeededEvent(ClusterNode node,
                                                            org.apache.ignite.internal.processors.affinity.AffinityTopologyVersion topVer)

Creates succeeded partition validation state event.

Parameters:

node - Node that raised this event.

topVer - Topology version on which the validation succeeded.

Returns:

Partitions state validation event.

parts

public Map<String,Set<Integer>> parts()

Gets map of partitions validation result.

Returns:

Map of cache or group names to the set of partition ids which failed validation.

topVer

public org.apache.ignite.internal.processors.affinity.AffinityTopologyVersion topVer()

Gets topology version.

Returns:

The topology version on which the event was triggered.