Package org.apache.hadoop.yarn.server.resourcemanager.reservation.planning

Class TryManyReservationAgents

java.lang.Object

org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.TryManyReservationAgents

All Implemented Interfaces:

ReservationAgent

public class TryManyReservationAgents
extends java.lang.Object
implements ReservationAgent

A planning algorithm that invokes several other planning algorithms according to a given order. If one of the planners succeeds, the allocation it generates is returned.

Field Summary

Fields inherited from interface org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.ReservationAgent

DEFAULT_GREEDY_FAVOR_EARLY_ALLOCATION, FAVOR_EARLY_ALLOCATION

Constructor Summary

Constructors

Constructor	Description
TryManyReservationAgents(java.util.List<ReservationAgent> algs)

Method Summary

Modifier and Type	Method	Description
boolean	createReservation(org.apache.hadoop.yarn.api.records.ReservationId reservationId, java.lang.String user, Plan plan, org.apache.hadoop.yarn.api.records.ReservationDefinition contract)	Create a reservation for the user that abides by the specified contract
boolean	deleteReservation(org.apache.hadoop.yarn.api.records.ReservationId reservationId, java.lang.String user, Plan plan)	Delete an user reservation
void	init(org.apache.hadoop.conf.Configuration conf)	Init configuration.
boolean	updateReservation(org.apache.hadoop.yarn.api.records.ReservationId reservationId, java.lang.String user, Plan plan, org.apache.hadoop.yarn.api.records.ReservationDefinition contract)	Update a reservation for the user that abides by the specified contract

Methods inherited from class java.lang.Object

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

Constructor Detail

TryManyReservationAgents

public TryManyReservationAgents(java.util.List<ReservationAgent> algs)

Method Detail

createReservation

public boolean createReservation(org.apache.hadoop.yarn.api.records.ReservationId reservationId,
                                 java.lang.String user,
                                 Plan plan,
                                 org.apache.hadoop.yarn.api.records.ReservationDefinition contract)
                          throws PlanningException

Description copied from interface: ReservationAgent

Create a reservation for the user that abides by the specified contract

Specified by:

createReservation in interface ReservationAgent

Parameters:

reservationId - the identifier of the reservation to be created.

user - the user who wants to create the reservation

plan - the Plan to which the reservation must be fitted

contract - encapsulates the resources the user requires for his session

Returns:

whether the create operation was successful or not

Throws:

PlanningException - if the session cannot be fitted into the plan

updateReservation

public boolean updateReservation(org.apache.hadoop.yarn.api.records.ReservationId reservationId,
                                 java.lang.String user,
                                 Plan plan,
                                 org.apache.hadoop.yarn.api.records.ReservationDefinition contract)
                          throws PlanningException

Description copied from interface: ReservationAgent

Update a reservation for the user that abides by the specified contract

Specified by:

updateReservation in interface ReservationAgent

Parameters:

reservationId - the identifier of the reservation to be updated

user - the user who wants to create the session

plan - the Plan to which the reservation must be fitted

contract - encapsulates the resources the user requires for his reservation

Returns:

whether the update operation was successful or not

Throws:

PlanningException - if the reservation cannot be fitted into the plan

deleteReservation

public boolean deleteReservation(org.apache.hadoop.yarn.api.records.ReservationId reservationId,
                                 java.lang.String user,
                                 Plan plan)
                          throws PlanningException

Description copied from interface: ReservationAgent

Delete an user reservation

Specified by:

deleteReservation in interface ReservationAgent

Parameters:

reservationId - the identifier of the reservation to be deleted

user - the user who wants to create the reservation

plan - the Plan to which the session must be fitted

Returns:

whether the delete operation was successful or not

Throws:

PlanningException - if the reservation cannot be fitted into the plan

init

public void init(org.apache.hadoop.conf.Configuration conf)

Description copied from interface: ReservationAgent

Init configuration.

Specified by:

init in interface ReservationAgent

Parameters:

conf - Configuration