alluxio.worker.block.management.tier

Class PromoteTask

java.lang.Object

alluxio.worker.block.management.AbstractBlockManagementTask

alluxio.worker.block.management.tier.PromoteTask

All Implemented Interfaces:

BlockManagementTask

public class PromoteTask
extends AbstractBlockManagementTask

A BlockStore management task that is to move blocks to higher tiers. This is to ensure higher tiers are utilized to increase overall performance. A single task may not be enough to complete promotion, so ManagementTaskCoordinator will keep instantiating new promote tasks until no longer needed.

Field Summary

Fields inherited from class alluxio.worker.block.management.AbstractBlockManagementTask

mBlockStore, mEvictorView, mExecutor, mLoadTracker, mMetadataManager, mTransferExecutor

Constructor Summary

Constructors

Constructor and Description
PromoteTask(LocalBlockStore blockStore, BlockMetadataManager metadataManager, BlockMetadataEvictorView evictorView, StoreLoadTracker loadTracker, ExecutorService executor) Creates a new promote task.

Method Summary

Modifier and Type	Method and Description
BlockManagementTaskResult	run() Run management task.

Methods inherited from class java.lang.Object

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

Constructor Detail

PromoteTask

public PromoteTask(LocalBlockStore blockStore,
                   BlockMetadataManager metadataManager,
                   BlockMetadataEvictorView evictorView,
                   StoreLoadTracker loadTracker,
                   ExecutorService executor)

Creates a new promote task.

Parameters:

blockStore - the block store

metadataManager - the meta manager

evictorView - the evictor view

loadTracker - the load tracker

executor - the executor

Method Detail

run

public BlockManagementTaskResult run()

Description copied from interface: BlockManagementTask

Run management task.

Returns:

the task result