Package org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity

Class ConfigurationProperties

java.lang.Object

org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ConfigurationProperties

public class ConfigurationProperties
extends java.lang.Object

A trie storage to preprocess and store configuration properties for optimised retrieval. A node is created for every key part delimited by ".". A property entry is stored in a node that matches its next to last key part (which reduces the nodes created). For example: yarn.scheduler.capacity.root.max-applications 100 yarn.scheduler.capacity.root.state RUNNING 4 nodes are created: yarn - scheduler - capacity - root root node will have the two properties set in its values.

Constructor Summary

Constructors

Constructor	Description
ConfigurationProperties(java.util.Map<java.lang.String,java.lang.String> props)	A constructor defined in order to conform to the type used by Configuration.

Method Summary

Modifier and Type	Method	Description
java.util.Map<java.lang.String,java.lang.String>	getPropertiesWithPrefix(java.lang.String prefix)	Filters all properties by a prefix.
java.util.Map<java.lang.String,java.lang.String>	getPropertiesWithPrefix(java.lang.String prefix, boolean fullyQualifiedKey)	Filters all properties by a prefix.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConfigurationProperties

public ConfigurationProperties(java.util.Map<java.lang.String,java.lang.String> props)

A constructor defined in order to conform to the type used by Configuration. It must only be called by String keys and values.

Parameters:

props - properties to store

Method Detail

getPropertiesWithPrefix

public java.util.Map<java.lang.String,java.lang.String> getPropertiesWithPrefix(java.lang.String prefix)

Filters all properties by a prefix. The property keys are trimmed by the given prefix.

Parameters:

prefix - prefix to filter property keys

Returns:

properties matching given prefix

getPropertiesWithPrefix

public java.util.Map<java.lang.String,java.lang.String> getPropertiesWithPrefix(java.lang.String prefix,
                                                                                      boolean fullyQualifiedKey)

Filters all properties by a prefix.

Parameters:

prefix - prefix to filter property keys

fullyQualifiedKey - whether collected property keys are to be trimmed by the prefix, or must be kept as it is

Returns:

properties matching given prefix