alluxio.master.file.meta

Class InodeCounter

java.lang.Object

java.lang.Number

java.util.concurrent.atomic.LongAdder

alluxio.master.file.meta.InodeCounter

All Implemented Interfaces:

Checkpointed, Serializable

public final class InodeCounter
extends LongAdder
implements Checkpointed

A checkpointed long adder.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
InodeCounter()

Method Summary

Modifier and Type	Method and Description
CheckpointName	getCheckpointName()
void	restoreFromCheckpoint(CheckpointInputStream input) Restores state from a checkpoint.
void	writeToCheckpoint(OutputStream output) Writes a checkpoint of all state to the given output stream.

Methods inherited from class java.util.concurrent.atomic.LongAdder

add, decrement, doubleValue, floatValue, increment, intValue, longValue, reset, sum, sumThenReset, toString

Methods inherited from class java.lang.Number

byteValue, shortValue

Methods inherited from class java.lang.Object

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

Constructor Detail

InodeCounter

public InodeCounter()

Method Detail

getCheckpointName

public CheckpointName getCheckpointName()

Specified by:

getCheckpointName in interface Checkpointed

Returns:

a name for this checkpointed class

writeToCheckpoint

public void writeToCheckpoint(OutputStream output)
                       throws IOException,
                              InterruptedException

Description copied from interface: Checkpointed

Writes a checkpoint of all state to the given output stream. Implementations should make an effort to throw InterruptedException if they get interrupted while running.

Specified by:

writeToCheckpoint in interface Checkpointed

Parameters:

output - the output stream to write to

Throws:

IOException

InterruptedException

restoreFromCheckpoint

public void restoreFromCheckpoint(CheckpointInputStream input)
                           throws IOException

Description copied from interface: Checkpointed

Restores state from a checkpoint.

Specified by:

restoreFromCheckpoint in interface Checkpointed

Parameters:

input - an input stream with checkpoint data

Throws:

IOException