Package org.apache.hadoop.util

Class ReadWriteDiskValidator

java.lang.Object

org.apache.hadoop.util.ReadWriteDiskValidator

All Implemented Interfaces:

DiskValidator

public class ReadWriteDiskValidator
extends java.lang.Object
implements DiskValidator

ReadWriteDiskValidator is the class to check a directory by to create a file, write some bytes into it, read back, and verify if they are identical. Read time and write time are recorded and put into an ReadWriteDiskValidatorMetrics.

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	NAME

Constructor Summary

Constructors

Constructor	Description
ReadWriteDiskValidator()

Method Summary

Modifier and Type	Method	Description
void	checkStatus(java.io.File dir)	Check the status of a file/dir.

Methods inherited from class java.lang.Object

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

Field Detail

NAME

public static final java.lang.String NAME

See Also:

Constant Field Values

Constructor Detail

ReadWriteDiskValidator

public ReadWriteDiskValidator()

Method Detail

checkStatus

public void checkStatus(java.io.File dir)
                 throws DiskChecker.DiskErrorException

Description copied from interface: DiskValidator

Check the status of a file/dir.

Specified by:

checkStatus in interface DiskValidator

Parameters:

dir - a file/dir

Throws:

DiskChecker.DiskErrorException - if any disk error