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

Best Java code snippets using org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.splitNodesWithRack (Showing top 4 results out of 315)

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private void myMethod () {
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}

@Override
public boolean isMovable(Collection<DatanodeInfo> locs,
  DatanodeInfo source, DatanodeInfo target) {
 final Map<String, List<DatanodeInfo>> rackMap = new HashMap<>();
 final List<DatanodeInfo> moreThanOne = new ArrayList<>();
 final List<DatanodeInfo> exactlyOne = new ArrayList<>();
 splitNodesWithRack(locs, locs, rackMap, moreThanOne, exactlyOne);
 return notReduceNumOfGroups(moreThanOne, source, target);
}

splitNodesWithRack(availableReplicas, delCandidates, rackMap, moreThanOne,
  exactlyOne);

splitNodesWithRack(candidates, rackMap, moreThanOne, exactlyOne);

splitNodesWithRack(candidates, rackMap, moreThanOne, exactlyOne);

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.
chooseRemoteRack
Choose numOfReplicas nodes from the racks that localMachine is NOT on. if not enough nodes are avail
getMaxNodesPerRack
Calculate the maximum number of replicas to allocate per rack. It also limits the total number of re

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

Best Java code snippets using org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.splitNodesWithRack (Showing top 4 results out of 315)

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