Package org.apache.hadoop.registry.server.services

package org.apache.hadoop.registry.server.services

Basic services for the YARN registry

• The RegistryAdminService extends the shared YARN Registry client with registry setup and (potentially asynchronous) administrative actions.
• The MicroZookeeperService is a transient Zookeeper instance bound to the YARN service lifecycle. It is suitable for testing.
• The AddingCompositeService extends the standard YARN composite service by making its add and remove methods public. It is a utility service used in parts of the codebase

Related Packages

Package	Description
org.apache.hadoop.registry.server	Server-side classes for the registry
org.apache.hadoop.registry.server.dns	DNS Server classes.
org.apache.hadoop.registry.server.integration	This package contains the classes which integrate with the YARN resource manager.

Class	Description
AddingCompositeService	Composite service that exports the add/remove methods.
org.apache.hadoop.registry.server.services.DeleteCompletionCallback	Curator callback for delete operations completing.
org.apache.hadoop.registry.server.services.MicroZookeeperService	This is a small, localhost Zookeeper service instance that is contained in a YARN service...it's been derived from Apache Twill.
org.apache.hadoop.registry.server.services.MicroZookeeperServiceKeys	Service keys for configuring the MicroZookeeperService.
org.apache.hadoop.registry.server.services.RegistryAdminService	Administrator service for the registry.
org.apache.hadoop.registry.server.services.RegistryAdminService.NodeSelector	Comparator used for purge logic
RegistryAdminService.PurgePolicy	Policy to purge entries