Package org.apache.hadoop.hdfs.server.blockmanagement

Class BlockPlacementStatusWithUpgradeDomain

java.lang.Object

org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementStatusWithUpgradeDomain

All Implemented Interfaces:

BlockPlacementStatus

@Private
@Evolving
public class BlockPlacementStatusWithUpgradeDomain
extends Object
implements BlockPlacementStatus

An implementation of @see BlockPlacementStatus for

See Also:

• BlockPlacementPolicyWithUpgradeDomain

Constructor Summary

Constructors

Constructor	Description
BlockPlacementStatusWithUpgradeDomain(BlockPlacementStatus parentBlockPlacementStatus, Set<String> upgradeDomains, int numberOfReplicas, int upgradeDomainFactor)

Method Summary

Modifier and Type	Method	Description
int	getAdditionalReplicasRequired()	Return the number of additional replicas needed to ensure the block placement policy is satisfied.
String	getErrorDescription()	Get description info for log or printed in case replicas are failed to meet requirement of placement policy
boolean	isPlacementPolicySatisfied()	Boolean value to identify if replicas of this block satisfy requirement of placement policy

Methods inherited from class java.lang.Object

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

Constructor Details

BlockPlacementStatusWithUpgradeDomain

public BlockPlacementStatusWithUpgradeDomain(BlockPlacementStatus parentBlockPlacementStatus,
 Set<String> upgradeDomains,
 int numberOfReplicas,
 int upgradeDomainFactor)

Parameters:

parentBlockPlacementStatus - the parent class' status

upgradeDomains - the set of upgrade domains of the replicas

numberOfReplicas - the number of replicas of the block

upgradeDomainFactor - the configured upgrade domain factor

Method Details

isPlacementPolicySatisfied

public boolean isPlacementPolicySatisfied()

Description copied from interface: BlockPlacementStatus

Boolean value to identify if replicas of this block satisfy requirement of placement policy

Specified by:

isPlacementPolicySatisfied in interface BlockPlacementStatus

Returns:

if replicas satisfy placement policy's requirement

getErrorDescription

public String getErrorDescription()

Description copied from interface: BlockPlacementStatus

Get description info for log or printed in case replicas are failed to meet requirement of placement policy

Specified by:

getErrorDescription in interface BlockPlacementStatus

Returns:

description in case replicas are failed to meet requirement of placement policy

getAdditionalReplicasRequired

public int getAdditionalReplicasRequired()

Description copied from interface: BlockPlacementStatus

Return the number of additional replicas needed to ensure the block placement policy is satisfied.

Specified by:

getAdditionalReplicasRequired in interface BlockPlacementStatus

Returns:

The number of new replicas needed to satisify the placement policy or zero if no extra are needed