Package org.apache.hadoop.yarn.server.timelineservice.storage.application

Enum ApplicationColumnFamily

java.lang.Object

java.lang.Enum<ApplicationColumnFamily>

org.apache.hadoop.yarn.server.timelineservice.storage.application.ApplicationColumnFamily

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<ApplicationColumnFamily>, ColumnFamily<ApplicationTable>

public enum ApplicationColumnFamily
extends java.lang.Enum<ApplicationColumnFamily>
implements ColumnFamily<ApplicationTable>

Represents the application table column families.

Enum Constant Summary

Enum Constants

Enum Constant	Description
CONFIGS	Configurations are in a separate column family for two reasons: a) the size of the config values can be very large and b) we expect that config values are often separately accessed from other metrics and info columns.
INFO	Info column family houses known columns, specifically ones included in columnfamily filters.
METRICS	Metrics have a separate column family, because they have a separate TTL.

Method Summary

Modifier and Type	Method	Description
byte[]	getBytes()	Keep a local copy if you need to avoid overhead of repeated cloning.
static ApplicationColumnFamily	valueOf(java.lang.String name)	Returns the enum constant of this type with the specified name.
static ApplicationColumnFamily[]	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, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

INFO

public static final ApplicationColumnFamily INFO

Info column family houses known columns, specifically ones included in columnfamily filters.

CONFIGS

public static final ApplicationColumnFamily CONFIGS

Configurations are in a separate column family for two reasons: a) the size of the config values can be very large and b) we expect that config values are often separately accessed from other metrics and info columns.

METRICS

public static final ApplicationColumnFamily METRICS

Metrics have a separate column family, because they have a separate TTL.

Method Detail

values

public static ApplicationColumnFamily[] 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 (ApplicationColumnFamily c : ApplicationColumnFamily.values())
    System.out.println(c);

Returns:

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

valueOf

public static ApplicationColumnFamily 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

getBytes

public byte[] getBytes()

Description copied from interface: ColumnFamily

Keep a local copy if you need to avoid overhead of repeated cloning.

Specified by:

getBytes in interface ColumnFamily<ApplicationTable>

Returns:

a clone of the byte representation of the column family.