Package org.apache.hadoop.tools.dynamometer

Class BlockPlacementPolicyAlwaysSatisfied

java.lang.Object

org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy

org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault

org.apache.hadoop.tools.dynamometer.BlockPlacementPolicyAlwaysSatisfied

public class BlockPlacementPolicyAlwaysSatisfied
extends org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault

A BlockPlacementPolicy which always considered itself satisfied. This avoids the issue that the Dynamometer NameNode will complain about blocks being under-replicated because they're not being put on distinct racks.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy

org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy.NotEnoughReplicasException

Field Summary

Fields inherited from class org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault

clusterMap, considerLoad, considerLoadFactor, heartbeatInterval, host2datanodeMap, tolerateHeartbeatMultiplier

Fields inherited from class org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy

LOG

Constructor Summary

Constructors

Constructor	Description
BlockPlacementPolicyAlwaysSatisfied()

Method Summary

Modifier and Type	Method	Description
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementStatus	verifyBlockPlacement(org.apache.hadoop.hdfs.protocol.DatanodeInfo[] locs, int numberOfReplicas)

Methods inherited from class org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault

addToExcludedNodes, chooseDataNode, chooseDataNode, chooseFavouredNodes, chooseLocalOrFavoredStorage, chooseLocalRack, chooseLocalStorage, chooseLocalStorage, chooseRandom, chooseRandom, chooseRemoteRack, chooseReplicasToDelete, chooseReplicaToDelete, chooseTarget, chooseTarget, chooseTargetInOrder, getExcludeSlowNodesEnabled, getMaxNodesPerRack, getMinBlocksForWrite, initialize, isMovable, pickupReplicaSet, setExcludeSlowNodesEnabled, setMinBlocksForWrite

Methods inherited from class org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy

adjustSetsWithChosenReplica, getDatanodeInfo, getRack, splitNodesWithRack

Methods inherited from class java.lang.Object

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

Constructor Detail

BlockPlacementPolicyAlwaysSatisfied

public BlockPlacementPolicyAlwaysSatisfied()

Method Detail

verifyBlockPlacement

public org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementStatus verifyBlockPlacement(org.apache.hadoop.hdfs.protocol.DatanodeInfo[] locs,
                                                                                               int numberOfReplicas)

Overrides:

verifyBlockPlacement in class org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault