org.apache.ignite.internal.processors.cache.persistence.metastorage.pendingtask

Interface DurableBackgroundTask<R>

Type Parameters:

R - Type of the result of the task.

All Superinterfaces:

Serializable

All Known Implementing Classes:

DurableBackgroundCleanupIndexTreeTask, DurableBackgroundCleanupIndexTreeTaskV2

public interface DurableBackgroundTask<R>
extends Serializable

Durable task that should be used to do long operations (e.g. index deletion) in background.

Method Summary

Modifier and Type	Method and Description
void	cancel() Canceling the task.
default DurableBackgroundTask<?>	convertAfterRestoreIfNeeded() Converting the current task to another after restoring from metaStorage.
IgniteInternalFuture<DurableBackgroundTaskResult<R>>	executeAsync(GridKernalContext ctx) Asynchronous task execution.
String	name() Getting the name of the task to identify it.

Method Detail

name

String name()

Getting the name of the task to identify it. Also used as part of a key for storage in a MetaStorage.

Returns:

Task name.

cancel

void cancel()

Canceling the task.

executeAsync

IgniteInternalFuture<DurableBackgroundTaskResult<R>> executeAsync(GridKernalContext ctx)

Asynchronous task execution. Completion of the task execution should be only with the result.

Parameters:

ctx - Kernal context.

Returns:

Future of the tasks.

convertAfterRestoreIfNeeded

default DurableBackgroundTask<?> convertAfterRestoreIfNeeded()

Converting the current task to another after restoring from metaStorage.

Returns:

Converted task.