tachyon.master

Class Counters

java.lang.Object

tachyon.master.Counters

All Implemented Interfaces:

Serializable, Comparable<Counters>

public class Counters
extends Object
implements Serializable, Comparable<Counters>

Class to store global counter in master's write head log and checkpoint file.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Counters(int inodeCounter, long editTransactionId, int dependencyCounter) Create a new Counters.

Method Summary

Methods

Modifier and Type	Method and Description
int	compareTo(Counters o)
boolean	equals(Object o)
int	getDependencyCounter()
long	getEditTransactionCounter()
int	getInodeCounter()
int	hashCode()
String	toString()
void	updateDependencyCounter(int dependencyCounter) Update the dependencyCounter.
void	updateEditTransactionCounter(long id) Update the editTransactionId.
void	updateInodeCounter(int inodeCounter) Update the inodeCounter.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Counters

public Counters(int inodeCounter,
        long editTransactionId,
        int dependencyCounter)

Create a new Counters. It contains three counters, the counter for inode's id, the counter for edit transaction's id, and the counter for dependency's id.

Parameters:

inodeCounter - The initial value of the inodeCounter

editTransactionId - The initial value of the editTransactionId

dependencyCounter - The initial value of the dependencyCounter

Method Detail

compareTo

public int compareTo(Counters o)

Specified by:

compareTo in interface Comparable<Counters>

equals

public boolean equals(Object o)

Overrides:

equals in class Object

getDependencyCounter

public int getDependencyCounter()

getEditTransactionCounter

public long getEditTransactionCounter()

getInodeCounter

public int getInodeCounter()

hashCode

public int hashCode()

Overrides:

hashCode in class Object

updateDependencyCounter

public void updateDependencyCounter(int dependencyCounter)

Update the dependencyCounter. Choose the maximum value between the current counter and the parameter.

Parameters:

dependencyCounter - The input dependencyCounter

updateEditTransactionCounter

public void updateEditTransactionCounter(long id)

Update the editTransactionId. Choose the maximum value between the current counter and the parameter.

Parameters:

id - The input editTransactionId

updateInodeCounter

public void updateInodeCounter(int inodeCounter)

Update the inodeCounter. Choose the maximum value between the current counter and the parameter.

Parameters:

inodeCounter - The input inodeCounter

toString

public String toString()

Overrides:

toString in class Object