public class AvailableSpaceBlockPlacementPolicy
extends org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault
| Constructor and Description | 
|---|
| AvailableSpaceBlockPlacementPolicy() | 
| Modifier and Type | Method and Description | 
|---|---|
| protected org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor | chooseDataNode(String scope,
              Collection<org.apache.hadoop.net.Node> excludedNode)Choose a datanode from the given scope. | 
| protected org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor | chooseDataNode(String scope,
              Collection<org.apache.hadoop.net.Node> excludedNode,
              org.apache.hadoop.fs.StorageType type)Choose a datanode from the given scope with specified
 storage type. | 
| protected DatanodeStorageInfo | chooseLocalStorage(org.apache.hadoop.net.Node localMachine,
                  Set<org.apache.hadoop.net.Node> excludedNodes,
                  long blocksize,
                  int maxNodesPerRack,
                  List<DatanodeStorageInfo> results,
                  boolean avoidStaleNodes,
                  EnumMap<org.apache.hadoop.fs.StorageType,Integer> storageTypes,
                  boolean fallbackToLocalRack)Choose localMachine as the target. | 
| protected int | compareDataNode(org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor a,
               org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor b,
               boolean isBalanceLocal)Compare the two data nodes. | 
| void | initialize(org.apache.hadoop.conf.Configuration conf,
          org.apache.hadoop.hdfs.server.blockmanagement.FSClusterStats stats,
          org.apache.hadoop.net.NetworkTopology clusterMap,
          org.apache.hadoop.hdfs.server.blockmanagement.Host2NodesMap host2datanodeMap)Used to setup a BlockPlacementPolicy object. | 
addToExcludedNodes, chooseFavouredNodes, chooseLocalOrFavoredStorage, chooseLocalRack, chooseLocalStorage, chooseRandom, chooseRandom, chooseRemoteRack, chooseReplicasToDelete, chooseReplicaToDelete, chooseTarget, chooseTarget, chooseTargetInOrder, getExcludeSlowNodesEnabled, getMaxNodesPerRack, isMovable, pickupReplicaSet, setExcludeSlowNodesEnabled, verifyBlockPlacementpublic void initialize(org.apache.hadoop.conf.Configuration conf,
                       org.apache.hadoop.hdfs.server.blockmanagement.FSClusterStats stats,
                       org.apache.hadoop.net.NetworkTopology clusterMap,
                       org.apache.hadoop.hdfs.server.blockmanagement.Host2NodesMap host2datanodeMap)
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyinitialize in class org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefaultconf - the configuration objectstats - retrieve cluster status from hereclusterMap - cluster topologyprotected org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor chooseDataNode(String scope, Collection<org.apache.hadoop.net.Node> excludedNode, org.apache.hadoop.fs.StorageType type)
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefaultchooseDataNode in class org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefaultprotected DatanodeStorageInfo chooseLocalStorage(org.apache.hadoop.net.Node localMachine, Set<org.apache.hadoop.net.Node> excludedNodes, long blocksize, int maxNodesPerRack, List<DatanodeStorageInfo> results, boolean avoidStaleNodes, EnumMap<org.apache.hadoop.fs.StorageType,Integer> storageTypes, boolean fallbackToLocalRack) throws org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy.NotEnoughReplicasException
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefaultchooseLocalStorage in class org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefaultorg.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy.NotEnoughReplicasExceptionprotected org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor chooseDataNode(String scope, Collection<org.apache.hadoop.net.Node> excludedNode)
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefaultchooseDataNode in class org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefaultprotected int compareDataNode(org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor a,
                              org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor b,
                              boolean isBalanceLocal)
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