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

Interface BlockPlacementStatus

All Known Implementing Classes:

BlockPlacementStatusDefault, BlockPlacementStatusWithNodeGroup, BlockPlacementStatusWithUpgradeDomain

@Private
@Evolving
public interface BlockPlacementStatus

Method Summary

Modifier and Type	Method	Description
int	getAdditionalReplicasRequired()	Return the number of additional replicas needed to ensure the block placement policy is satisfied.
java.lang.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

Method Detail

isPlacementPolicySatisfied

boolean isPlacementPolicySatisfied()

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

Returns:

if replicas satisfy placement policy's requirement

getErrorDescription

java.lang.String getErrorDescription()

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

Returns:

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

getAdditionalReplicasRequired

int getAdditionalReplicasRequired()

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

Returns:

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