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

Best Java code snippets using org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.getPipeline (Showing top 6 results out of 315)

return getPipeline(
  (writer != null && writer instanceof DatanodeDescriptor) ? writer
    : localNode,

 return getPipeline(writer,
   results.toArray(new DatanodeStorageInfo[results.size()]));
} catch (NotEnoughReplicasException nr) {

return getPipeline(
  (writer != null && writer instanceof DatanodeDescriptor) ? writer
    : localNode,

return getPipeline(
  (writer != null && writer instanceof DatanodeDescriptor) ? writer
    : localNode,

 return getPipeline(writer,
   results.toArray(new DatanodeStorageInfo[results.size()]));
} catch (NotEnoughReplicasException nr) {

 return getPipeline(writer,
   results.toArray(new DatanodeStorageInfo[results.size()]));
} catch (NotEnoughReplicasException nr) {

Javadoc

Return a pipeline of nodes. The pipeline is formed finding a shortest path that starts from the writer and traverses all nodes This is basically a traveling salesman problem.

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

Best Java code snippets using org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.getPipeline (Showing top 6 results out of 315)

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