Public

Decide whether deleting the specified replica of the block still makes the block
conform to the conf

chooseReplicaToDelete

chooseTarget

useDelHint

Add localMachine and related nodes to excludedNodes for next replica choosing.
In sub class, we can 

addToExcludedNodes

adjustSetsWithChosenReplica

Choose a datanode from the given scope with specified storage type.

chooseDataNode

chooseFromNextRack

Choose one node from the rack that localMachine is on. if no such node is
available, choose one node

chooseLocalRack

Choose localMachine as the target. if localMachine is not available, choose a
node on the same rack

chooseLocalStorage

Randomly choose numOfReplicas targets from the given scope.

chooseRandom

Choose numOfReplicas nodes from the racks that localMachine is NOT on. if not
enough nodes are avail

chooseRemoteRack

Calculate the maximum number of replicas to allocate per rack. It also limits
the total number of re

getMaxNodesPerRack

Return a pipeline of nodes. The pipeline is formed finding a shortest path that
starts from the writ

getPipeline

getRequiredStorageTypes

initialize

logNodeIsNotChosen

Pick up replica node set for deleting replica as over-replicated. First set
contains replica nodes o

pickupReplicaSet

splitNodesWithRack

If the given storage is a good target, add it to the result list and update the
set of excluded node

addIfIsGoodTarget

isGoodTarget

SimpleDateFormat

Start an intent from android

Wraps either an existing OutputStream or an existing Writerand provides
convenience methods for prin

java.io.PrintWriter

 KeyStore is responsible for maintaining cryptographic keys and their owners. 
The type of the syste

java.security.KeyStore

This class generates cryptographically secure pseudo-random numbers. It is best
to invoke SecureRand

java.security.SecureRandom

An exception that indicates a failed JDBC operation. It provides the following
information about pro

java.sql.SQLException

The base class for all formats. This is an abstract base class which specifies
the protocol for clas

java.text.Format

Provides an abstract class to be subclassed to create an HTTP servlet suitable
for a Web site. A sub

javax.servlet.http.HttpServlet

getSupportFragmentManager

getExternalFilesDir

findViewById

/**
   * Choose one node from the rack that <i>localMachine</i> is on.
   * if no such node is available, choose one node from the rack where
   * a second replica is on.
   * if still no such node is available, choose a random node 
   * in the cluster.
   * @return the chosen node
   */

// no local machine, so choose a random machine

// find the next replica and retry with its rack

"Failed to choose from local rack (location = "

"), retry with the rack of the next replica (location = "

"); the second replica is not found, retry choosing randomly"

//the second replica is not found, randomly choose one from the network

"); the second replica is not found, retry choosing ramdomly"

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

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

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