How to use
chooseRemoteRack
method
in
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault

Best Java code snippets using org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseRemoteRack (Showing top 3 results out of 315)

chooseRemoteRack(1, dn0, excludedNodes, blocksize, maxNodesPerRack,
  results, avoidStaleNodes, storageTypes);
if (--numOfReplicas == 0) {
final DatanodeDescriptor dn1 = results.get(1).getDatanodeDescriptor();
if (clusterMap.isOnSameRack(dn0, dn1)) {
 chooseRemoteRack(1, dn0, excludedNodes, blocksize, maxNodesPerRack,
   results, avoidStaleNodes, storageTypes);
} else if (newBlock){

chooseRemoteRack(1, dn0, excludedNodes, blocksize, maxNodesPerRack,
  results, avoidStaleNodes, storageTypes);
if (--numOfReplicas == 0) {
final DatanodeDescriptor dn1 = results.get(1).getDatanodeDescriptor();
if (clusterMap.isOnSameRack(dn0, dn1)) {
 chooseRemoteRack(1, dn0, excludedNodes, blocksize, maxNodesPerRack,
   results, avoidStaleNodes, storageTypes);
} else if (newBlock){

chooseRemoteRack(1, dn0, excludedNodes, blocksize, maxNodesPerRack,
  results, avoidStaleNodes, storageTypes);
if (--numOfReplicas == 0) {
final DatanodeDescriptor dn1 = results.get(1).getDatanodeDescriptor();
if (clusterMap.isOnSameRack(dn0, dn1)) {
 chooseRemoteRack(1, dn0, excludedNodes, blocksize, maxNodesPerRack,
   results, avoidStaleNodes, storageTypes);
} else if (newBlock){

Javadoc

Choose numOfReplicas nodes from the racks that localMachine is NOT on. if not enough nodes are available, choose the remaining ones from the local rack

Popular methods of BlockPlacementPolicyDefault

chooseReplicaToDelete
Decide whether deleting the specified replica of the block still makes the block conform to the conf
chooseTarget
useDelHint
Check if we can use delHint.
addToExcludedNodes
Add localMachine and related nodes to excludedNodes for next replica choosing. In sub class, we can
adjustSetsWithChosenReplica
chooseDataNode
Choose a datanode from the given scope with specified storage type.
chooseFromNextRack
chooseLocalRack
Choose one node from the rack that localMachine is on. if no such node is available, choose one node
chooseLocalStorage
Choose localMachine as the target. if localMachine is not available, choose a node on the same rack
chooseRandom
Randomly choose numOfReplicas targets from the given scope.
getMaxNodesPerRack
Calculate the maximum number of replicas to allocate per rack. It also limits the total number of re
getPipeline
Return a pipeline of nodes. The pipeline is formed finding a shortest path that starts from the writ

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How to use chooseRemoteRackmethodin org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault

Best Java code snippets using org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseRemoteRack (Showing top 3 results out of 315)

How to use
chooseRemoteRack
method
in
org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault