@InterfaceAudience.Private @InterfaceStability.Unstable public abstract class PlacementRule extends Object
| Constructor and Description | 
|---|
| PlacementRule() | 
| Modifier and Type | Method and Description | 
|---|---|
| String | getName()Return the name of the rule. | 
| abstract ApplicationPlacementContext | getPlacementForApp(org.apache.hadoop.yarn.api.records.ApplicationSubmissionContext asc,
                  String user)Return the scheduler queue name the application should be placed in
 wrapped in an  ApplicationPlacementContextobject. | 
| abstract boolean | initialize(ResourceScheduler scheduler)Initialize the rule with the scheduler. | 
| void | setConfig(Object initArg)Set the config based on the passed in argument. | 
public void setConfig(Object initArg)
public String getName()
public abstract boolean initialize(ResourceScheduler scheduler) throws IOException
scheduler - the scheduler using the ruletrue or false The outcome of the
 initialisation, rule dependent response which might not be persisted in
 the rule.IOException - for any errorspublic abstract ApplicationPlacementContext getPlacementForApp(org.apache.hadoop.yarn.api.records.ApplicationSubmissionContext asc, String user) throws org.apache.hadoop.yarn.exceptions.YarnException
ApplicationPlacementContext object.
 A non null return value places the application in a queue,
 a null value means the queue is not yet determined. The
 next PlacementRule in the list maintained in the
 PlacementManager will be executed.asc - The context of the application created on submissionuser - The name of the user submitting the applicationApplicationPlacementContext or
 null if no queue was resolvedorg.apache.hadoop.yarn.exceptions.YarnException - for any error while executing the ruleCopyright © 2008–2023 Apache Software Foundation. All rights reserved.