org.apache.cassandra.repair

Class Validator

java.lang.Object

org.apache.cassandra.repair.Validator

All Implemented Interfaces:

java.lang.Runnable

public class Validator
extends java.lang.Object
implements java.lang.Runnable

Handles the building of a merkle tree for a column family. Lifecycle: 1. prepare() - Initialize tree with samples. 2. add() - 0 or more times, to add hashes to the tree. 3. complete() - Enqueues any operations that were blocked waiting for a valid tree.

Field Summary

Fields

Modifier and Type	Field and Description
RepairJobDesc	desc
int	gcBefore
java.net.InetAddress	initiator

Constructor Summary

Constructors

Constructor and Description
Validator(RepairJobDesc desc, java.net.InetAddress initiator, int gcBefore)
Validator(RepairJobDesc desc, java.net.InetAddress initiator, int gcBefore, boolean evenTreeDistribution)

Method Summary

Modifier and Type	Method and Description
void	add(UnfilteredRowIterator partition) Called (in order) for every row present in the CF.
void	complete() Registers the newly created tree for rendezvous in Stage.ANTIENTROPY.
void	completeTree()
void	fail() Called when some error during the validation happened.
boolean	findCorrectRange(Token t)
void	prepare(ColumnFamilyStore cfs, MerkleTrees tree)
void	run() Called after the validation lifecycle to respond with the now valid tree.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

desc

public final RepairJobDesc desc

initiator

public final java.net.InetAddress initiator

gcBefore

public final int gcBefore

Constructor Detail

Validator

public Validator(RepairJobDesc desc,
                 java.net.InetAddress initiator,
                 int gcBefore)

Validator

public Validator(RepairJobDesc desc,
                 java.net.InetAddress initiator,
                 int gcBefore,
                 boolean evenTreeDistribution)

Method Detail

prepare

public void prepare(ColumnFamilyStore cfs,
                    MerkleTrees tree)

add

public void add(UnfilteredRowIterator partition)

Called (in order) for every row present in the CF. Hashes the row, and adds it to the tree being built.

Parameters:

row - Row to add hash

findCorrectRange

public boolean findCorrectRange(Token t)

complete

public void complete()

Registers the newly created tree for rendezvous in Stage.ANTIENTROPY.

completeTree

public void completeTree()

fail

public void fail()

Called when some error during the validation happened. This sends RepairStatus to inform the initiator that the validation has failed. The actual reason for failure should be looked up in the log of the host calling this function.

run

public void run()

Called after the validation lifecycle to respond with the now valid tree. Runs in Stage.ANTIENTROPY.

Specified by:

run in interface java.lang.Runnable