Package org.apache.hadoop.fs

Enum Statistic

java.lang.Object

java.lang.Enum<Statistic>

org.apache.hadoop.fs.Statistic

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<Statistic>

public enum Statistic
extends java.lang.Enum<Statistic>

Statistic which are collected in FileSystem.

Enum Constant Summary

Enum Constants

Enum Constant	Description
BYTES_READ
BYTES_READ_DISTANCE_OF_FIVE_OR_LARGER
BYTES_READ_DISTANCE_OF_ONE_OR_TWO
BYTES_READ_DISTANCE_OF_THREE_OR_FOUR
BYTES_READ_ERASURE_CODED
BYTES_READ_LOCAL_HOST
BYTES_WRITTEN
LARGE_READ_OPS
READ_OPS
REMOTE_READ_TIME_MS
WRITE_OPS

Field Summary

Fields

Modifier and Type	Field	Description
static org.apache.hadoop.thirdparty.com.google.common.collect.ImmutableSet<Statistic>	VALUES

Method Summary

Modifier and Type	Method	Description
static Statistic	fromSymbol(java.lang.String symbol)	Get a statistic from a symbol.
java.lang.String	getDescription()
java.lang.String	getSymbol()
java.lang.String	toString()	The string value is simply the symbol.
static Statistic	valueOf(java.lang.String name)	Returns the enum constant of this type with the specified name.
static Statistic[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

BYTES_READ

public static final Statistic BYTES_READ

BYTES_WRITTEN

public static final Statistic BYTES_WRITTEN

READ_OPS

public static final Statistic READ_OPS

LARGE_READ_OPS

public static final Statistic LARGE_READ_OPS

WRITE_OPS

public static final Statistic WRITE_OPS

BYTES_READ_LOCAL_HOST

public static final Statistic BYTES_READ_LOCAL_HOST

BYTES_READ_DISTANCE_OF_ONE_OR_TWO

public static final Statistic BYTES_READ_DISTANCE_OF_ONE_OR_TWO

BYTES_READ_DISTANCE_OF_THREE_OR_FOUR

public static final Statistic BYTES_READ_DISTANCE_OF_THREE_OR_FOUR

BYTES_READ_DISTANCE_OF_FIVE_OR_LARGER

public static final Statistic BYTES_READ_DISTANCE_OF_FIVE_OR_LARGER

BYTES_READ_ERASURE_CODED

public static final Statistic BYTES_READ_ERASURE_CODED

REMOTE_READ_TIME_MS

public static final Statistic REMOTE_READ_TIME_MS

Field Detail

VALUES

public static final org.apache.hadoop.thirdparty.com.google.common.collect.ImmutableSet<Statistic> VALUES

Method Detail

values

public static Statistic[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (Statistic c : Statistic.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static Statistic valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null

getSymbol

public java.lang.String getSymbol()

fromSymbol

public static Statistic fromSymbol(java.lang.String symbol)

Get a statistic from a symbol.

Parameters:

symbol - statistic to look up

Returns:

the value or null.

getDescription

public java.lang.String getDescription()

toString

public java.lang.String toString()

The string value is simply the symbol. This makes this operation very low cost.

Overrides:

toString in class java.lang.Enum<Statistic>

Returns:

the symbol of this statistic.