org.apache.cassandra.dht
Class BootStrapper

java.lang.Object
  extended by org.apache.cassandra.dht.BootStrapper

public class BootStrapper
extends java.lang.Object

This class handles the bootstrapping responsibilities for the local endpoint. - bootstrapTokenVerb asks the most-loaded node what Token to use to split its Range in two. - streamRequestVerb tells source nodes to send us the necessary Ranges - source nodes send streamInitiateVerb to us to say "get ready to receive data" [if there is data to send] - when we have everything set up to receive the data, we send streamInitiateDoneVerb back to the source nodes and they start streaming - when streaming is complete, we send streamFinishedVerb to the source so it can clean up on its end


Nested Class Summary
static class BootStrapper.BootstrapTokenVerbHandler
           
 
Field Summary
protected  java.net.InetAddress address
           
protected  Token token
           
protected  TokenMetadata tokenMetadata
           
 
Constructor Summary
BootStrapper(AbstractReplicationStrategy rs, java.net.InetAddress address, Token token, TokenMetadata tmd)
           
 
Method Summary
static Token getBalancedToken(TokenMetadata metadata, java.util.Map<java.net.InetAddress,java.lang.Double> load)
           
static Token getBootstrapToken(TokenMetadata metadata, java.util.Map<java.net.InetAddress,java.lang.Double> load)
          if initialtoken was specified, use that.
 void startBootstrap()
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

address

protected final java.net.InetAddress address

token

protected final Token token

tokenMetadata

protected final TokenMetadata tokenMetadata
Constructor Detail

BootStrapper

public BootStrapper(AbstractReplicationStrategy rs,
                    java.net.InetAddress address,
                    Token token,
                    TokenMetadata tmd)
Method Detail

startBootstrap

public void startBootstrap()
                    throws java.io.IOException
Throws:
java.io.IOException

getBootstrapToken

public static Token getBootstrapToken(TokenMetadata metadata,
                                      java.util.Map<java.net.InetAddress,java.lang.Double> load)
                               throws java.io.IOException
if initialtoken was specified, use that. otherwise, pick a token to assume half the load of the most-loaded node.

Throws:
java.io.IOException

getBalancedToken

public static Token getBalancedToken(TokenMetadata metadata,
                                     java.util.Map<java.net.InetAddress,java.lang.Double> load)


Copyright © 2010 The Apache Software Foundation