Package org.elasticsearch.upgrades

Class SystemIndexMigrationExecutor

java.lang.Object

org.elasticsearch.persistent.PersistentTasksExecutor<SystemIndexMigrationTaskParams>

org.elasticsearch.upgrades.SystemIndexMigrationExecutor

public class SystemIndexMigrationExecutor
extends PersistentTasksExecutor<SystemIndexMigrationTaskParams>

Starts the process of migrating system indices. See SystemIndexMigrator for the actual migration logic.

Field Summary

Fields inherited from class org.elasticsearch.persistent.PersistentTasksExecutor

NO_NODE_FOUND

Constructor Summary

Constructors

Constructor	Description
SystemIndexMigrationExecutor(Client client, ClusterService clusterService, SystemIndices systemIndices, MetadataUpdateSettingsService metadataUpdateSettingsService, MetadataCreateIndexService metadataCreateIndexService, IndexScopedSettings indexScopedSettings)

Method Summary

Modifier and Type	Method	Description
protected AllocatedPersistentTask	createTask(long id, String type, String action, TaskId parentTaskId, PersistentTasksCustomMetadata.PersistentTask<SystemIndexMigrationTaskParams> taskInProgress, Map<String,String> headers)	Creates a AllocatedPersistentTask for communicating with task manager
PersistentTasksCustomMetadata.Assignment	getAssignment(SystemIndexMigrationTaskParams params, Collection<DiscoveryNode> candidateNodes, ClusterState clusterState)	Returns the node id where the params has to be executed,
static List<NamedWriteableRegistry.Entry>	getNamedWriteables()
protected void	nodeOperation(AllocatedPersistentTask task, SystemIndexMigrationTaskParams params, PersistentTaskState state)	This operation will be executed on the executor node.

Methods inherited from class org.elasticsearch.persistent.PersistentTasksExecutor

getDescription, getExecutor, getTaskName, selectLeastLoadedNode, validate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SystemIndexMigrationExecutor

public SystemIndexMigrationExecutor(Client client,
 ClusterService clusterService,
 SystemIndices systemIndices,
 MetadataUpdateSettingsService metadataUpdateSettingsService,
 MetadataCreateIndexService metadataCreateIndexService,
 IndexScopedSettings indexScopedSettings)

Method Details

nodeOperation

protected void nodeOperation(AllocatedPersistentTask task,
 SystemIndexMigrationTaskParams params,
 PersistentTaskState state)

Description copied from class: PersistentTasksExecutor

This operation will be executed on the executor node.

NOTE: The nodeOperation has to throw an exception, trigger task.markAsCompleted() or task.completeAndNotifyIfNeeded() methods to indicate that the persistent task has finished.

Specified by:

nodeOperation in class PersistentTasksExecutor<SystemIndexMigrationTaskParams>

createTask

protected AllocatedPersistentTask createTask(long id,
 String type,
 String action,
 TaskId parentTaskId,
 PersistentTasksCustomMetadata.PersistentTask<SystemIndexMigrationTaskParams> taskInProgress,
 Map<String,String> headers)

Description copied from class: PersistentTasksExecutor

Creates a AllocatedPersistentTask for communicating with task manager

Overrides:

createTask in class PersistentTasksExecutor<SystemIndexMigrationTaskParams>

getAssignment

public PersistentTasksCustomMetadata.Assignment getAssignment(SystemIndexMigrationTaskParams params,
 Collection<DiscoveryNode> candidateNodes,
 ClusterState clusterState)

Description copied from class: PersistentTasksExecutor

Returns the node id where the params has to be executed,

The default implementation returns the least loaded data node from amongst the collection of candidate nodes

Overrides:

getAssignment in class PersistentTasksExecutor<SystemIndexMigrationTaskParams>

getNamedWriteables

public static List<NamedWriteableRegistry.Entry> getNamedWriteables()