queuejob

package
v1.40.0 Latest Latest
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 Go to latest Published: Dec 18, 2023 License: Apache-2.0 Imports: 40 Imported by: 1

Documentation

Overview

Copyright 2019 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at 

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func CanIgnoreAPIError added in v1.33.0 

func CanIgnoreAPIError(err error) bool

func FilterPods added in v1.34.0 

func FilterPods(pods []v1.Pod, phase v1.PodPhase) int

filterPods returns pods based on their phase.

func GenerateAppWrapperCondition 

func GenerateAppWrapperCondition(condType arbv1.AppWrapperConditionType, condStatus corev1.ConditionStatus, condReason string, condMsg string) arbv1.AppWrapperCondition

GenerateAppWrapperCondition returns condition of a AppWrapper condition.

func GeneratePodFailedCondition added in v1.34.0 

func GeneratePodFailedCondition(podName string, podCondition []v1.PodCondition) arbv1.PendingPodSpec

GeneratePodFailedCondition returns condition of a AppWrapper condition.

func GetPodResourcesByPhase added in v1.34.0 

func GetPodResourcesByPhase(phase v1.PodPhase, pods []v1.Pod) *clusterstateapi.Resource

GetPodResourcesByPhase returns pods based on their phase.

func GetQueueJobKey 

func GetQueueJobKey(obj interface{}) (string, error)

func GetXQJFullName 

func GetXQJFullName(qj *arbv1.AppWrapper) string

func HigherSystemPriorityQJ 

func HigherSystemPriorityQJ(qj1, qj2 *arbv1.AppWrapper) bool

func IsJsonSyntaxError added in v1.33.0 

func IsJsonSyntaxError(err error) bool

func PendingPodsFailedSchd added in v1.34.0 

func PendingPodsFailedSchd(pods []v1.Pod) map[string][]v1.PodCondition

PendingPodsFailedSchd checks if pods pending have failed scheduling

Types

type EtcdErrorClassifier added in v1.33.0 

type EtcdErrorClassifier struct {
}

func (*EtcdErrorClassifier) Classify added in v1.33.0 

func (c *EtcdErrorClassifier) Classify(err error) retrier.Action

type Heap 

type Heap struct {
	// contains filtered or unexported fields
}

Heap is a thread-safe producer/consumer queue that implements a heap data structure. It can be used to implement priority queues and similar data structures.

func (*Heap) Add 

func (h *Heap) Add(obj *arbv1.AppWrapper) error

Add inserts an item, and puts it in the queue. The item is updated if it already exists.

func (*Heap) AddIfNotPresent 

func (h *Heap) AddIfNotPresent(obj *arbv1.AppWrapper) error

AddIfNotPresent inserts an item, and puts it in the queue. If an item with the key is present in the map, no changes is made to the item.

func (*Heap) BulkAdd 

func (h *Heap) BulkAdd(list []*arbv1.AppWrapper) error

BulkAdd adds all the items in the list to the queue.

func (*Heap) Delete 

func (h *Heap) Delete(obj interface{}) error

Delete removes an item.

func (*Heap) Get 

func (h *Heap) Get(obj interface{}) (interface{}, bool, error)

Get returns the requested item, or sets exists=false.

func (*Heap) GetByKey 

func (h *Heap) GetByKey(key string) (interface{}, bool, error)

GetByKey returns the requested item, or sets exists=false.

func (*Heap) List 

func (h *Heap) List() []interface{}

List returns a list of all the items.

func (*Heap) Pop 

func (h *Heap) Pop() (interface{}, error)

Pop returns the head of the heap.

func (*Heap) Update 

func (h *Heap) Update(obj *arbv1.AppWrapper) error

Update is the same as Add in this implementation. When the item does not exist, it is added.

type JobAndClusterAgent 

type JobAndClusterAgent struct {
	// contains filtered or unexported fields
}

type KeyFunc 

type KeyFunc func(obj interface{}) (string, error)

type LessFunc 

type LessFunc func(qj1, qj2 *arbv1.AppWrapper) bool

type PriorityQueue 

type PriorityQueue struct {
	// contains filtered or unexported fields
}

PriorityQueue implements a scheduling queue. It is an alternative to FIFO. The head of PriorityQueue is the highest priority pending QJ. This structure has two sub queues. One sub-queue holds QJ that are being considered for scheduling. This is called activeQ and is a Heap. Another queue holds pods that are already tried and are determined to be unschedulable. The latter is called unschedulableQ. Heap is already thread safe, but we need to acquire another lock here to ensure atomicity of operations on the two data structures..

func NewPriorityQueue 

func NewPriorityQueue() *PriorityQueue

func (*PriorityQueue) Add 

func (p *PriorityQueue) Add(qj *qjobv1.AppWrapper) error

Add adds a QJ to the active queue. It should be called only when a new QJ is added so there is no chance the QJ is already in either queue.

func (*PriorityQueue) AddIfNotPresent 

func (p *PriorityQueue) AddIfNotPresent(qj *qjobv1.AppWrapper) error

AddIfNotPresent adds a pod to the active queue if it is not present in any of the two queues. If it is present in any, it doesn't do any thing. used by queuejob_controller_ex.go

func (*PriorityQueue) AddUnschedulableIfNotPresent 

func (p *PriorityQueue) AddUnschedulableIfNotPresent(qj *qjobv1.AppWrapper) error

AddUnschedulableIfNotPresent does nothing if the pod is present in either queue. Otherwise it adds the pod to the unschedulable queue if p.receivedMoveRequest is false, and to the activeQ if p.receivedMoveRequest is true. used by queuejob_controller_ex.go

func (*PriorityQueue) Delete 

func (p *PriorityQueue) Delete(qj *qjobv1.AppWrapper) error

Delete deletes the item from either of the two queues. It assumes the pod is only in one queue. used by queuejob_controller_ex.go

func (*PriorityQueue) IfExist 

func (p *PriorityQueue) IfExist(qj *qjobv1.AppWrapper) bool

func (*PriorityQueue) IfExistActiveQ 

func (p *PriorityQueue) IfExistActiveQ(qj *qjobv1.AppWrapper) bool

used by queuejob_controller_ex.go

func (*PriorityQueue) IfExistUnschedulableQ 

func (p *PriorityQueue) IfExistUnschedulableQ(qj *qjobv1.AppWrapper) bool

used by queuejob_controller_ex.go

func (*PriorityQueue) Length 

func (p *PriorityQueue) Length() int

func (*PriorityQueue) MoveAllToActiveQueue 

func (p *PriorityQueue) MoveAllToActiveQueue()

MoveAllToActiveQueue moves all pods from unschedulableQ to activeQ. This function adds all pods and then signals the condition variable to ensure that if Pop() is waiting for an item, it receives it after all the pods are in the queue and the head is the highest priority pod. TODO(bsalamat): We should add a back-off mechanism here so that a high priority pod which is unschedulable does not go to the head of the queue frequently. For example in a cluster where a lot of pods being deleted, such a high priority pod can deprive other pods from getting scheduled.

func (*PriorityQueue) MoveToActiveQueueIfExists 

func (p *PriorityQueue) MoveToActiveQueueIfExists(aw *qjobv1.AppWrapper) error

Move QJ from unschedulableQ to activeQ if exists used by queuejob_controller_ex.go

func (*PriorityQueue) Pop 

func (p *PriorityQueue) Pop() (*qjobv1.AppWrapper, error)

Pop removes the head of the active queue and returns it. It blocks if the activeQ is empty and waits until a new item is added to the queue. It also clears receivedMoveRequest to mark the beginning of a new scheduling cycle. used by queuejob_controller_ex.go

func (*PriorityQueue) Update 

func (p *PriorityQueue) Update(oldQJ, newQJ *qjobv1.AppWrapper) error

Update updates a pod in the active queue if present. Otherwise, it removes the item from the unschedulable queue and adds the updated one to the active queue.

type SchedulingQueue 

type SchedulingQueue interface {
	Add(qj *qjobv1.AppWrapper) error
	AddIfNotPresent(qj *qjobv1.AppWrapper) error
	AddUnschedulableIfNotPresent(qj *qjobv1.AppWrapper) error
	Pop() (*qjobv1.AppWrapper, error)
	Update(oldQJ, newQJ *qjobv1.AppWrapper) error
	Delete(QJ *qjobv1.AppWrapper) error
	MoveToActiveQueueIfExists(QJ *qjobv1.AppWrapper) error
	MoveAllToActiveQueue()
	IfExist(QJ *qjobv1.AppWrapper) bool
	IfExistActiveQ(QJ *qjobv1.AppWrapper) bool
	IfExistUnschedulableQ(QJ *qjobv1.AppWrapper) bool
	Length() int
}

SchedulingQueue is an interface for a queue to store pods waiting to be scheduled. The interface follows a pattern similar to cache.FIFO and cache.Heap and makes it easy to use those data structures as a SchedulingQueue.

func NewSchedulingQueue 

func NewSchedulingQueue() SchedulingQueue

NewSchedulingQueue initializes a new scheduling queue. If pod priority is enabled a priority queue is returned. If it is disabled, a FIFO is returned.

type UnschedulableQJMap 

type UnschedulableQJMap struct {
	// contains filtered or unexported fields
}

UnschedulablePodsMap holds pods that cannot be scheduled. This data structure is used to implement unschedulableQ.

func (*UnschedulableQJMap) Add 

func (u *UnschedulableQJMap) Add(pod *qjobv1.AppWrapper)

Add adds a pod to the unschedulable pods.

func (*UnschedulableQJMap) Clear 

func (u *UnschedulableQJMap) Clear()

Clear removes all the entries from the unschedulable maps.

func (*UnschedulableQJMap) Delete 

func (u *UnschedulableQJMap) Delete(pod *qjobv1.AppWrapper)

Delete deletes a pod from the unschedulable pods.

func (*UnschedulableQJMap) Get 

func (u *UnschedulableQJMap) Get(pod *qjobv1.AppWrapper) *qjobv1.AppWrapper

Get returns the pod if a pod with the same key as the key of the given "pod" is found in the map. It returns nil otherwise.

func (*UnschedulableQJMap) Update 

func (u *UnschedulableQJMap) Update(pod *qjobv1.AppWrapper)

Update updates a pod in the unschedulable pods.

type UnschedulableQJs 

type UnschedulableQJs interface {
	Add(p *qjobv1.AppWrapper)
	Delete(p *qjobv1.AppWrapper)
	Update(p *qjobv1.AppWrapper)
	Get(p *qjobv1.AppWrapper) *qjobv1.AppWrapper
	Clear()
}

UnschedulablePods is an interface for a queue that is used to keep unschedulable pods. These pods are not actively reevaluated for scheduling. They are moved to the active scheduling queue on certain events, such as termination of a pod in the cluster, addition of nodes, etc.

type UnschedulableQueueJobs 

type UnschedulableQueueJobs interface {
	Add(pod *qjobv1.AppWrapper)
	Delete(pod *qjobv1.AppWrapper)
	Update(pod *qjobv1.AppWrapper)
	Get(pod *qjobv1.AppWrapper) *qjobv1.AppWrapper
	Clear()
}

type XController 

type XController struct {
	// contains filtered or unexported fields
}

XController the AppWrapper Controller type

func NewJobController 

func NewJobController(restConfig *rest.Config, mcadConfig *config.MCADConfiguration, extConfig *config.MCADConfigurationExtended) *XController

NewJobController create new AppWrapper Controller

func (*XController) Cleanup 

func (cc *XController) Cleanup(ctx context.Context, appwrapper *arbv1.AppWrapper) error

Cleanup function

func (*XController) GetAggregatedResources 

func (qjm *XController) GetAggregatedResources(cqj *arbv1.AppWrapper) *clusterstateapi.Resource

func (*XController) GetAggregatedResourcesPerGenericItem 

func (qjm *XController) GetAggregatedResourcesPerGenericItem(cqj *arbv1.AppWrapper) []*clusterstateapi.Resource

func (*XController) GetQueueJobEligibleForPreemption added in v1.34.1 

func (qjm *XController) GetQueueJobEligibleForPreemption(value *arbv1.AppWrapper) *arbv1.AppWrapper

func (*XController) IsActiveAppWrapper added in v1.33.0 

func (cc *XController) IsActiveAppWrapper(name, namespace string) bool

func (*XController) PreemptQueueJobs 

func (qjm *XController) PreemptQueueJobs(inspectAw *arbv1.AppWrapper)

TODO: We can use informer to filter AWs that do not meet the minScheduling spec. we still need a thread for dispatch duration but minScheduling spec can definetly be moved to an informer

func (*XController) Run 

func (cc *XController) Run(stopCh <-chan struct{})

Run starts AppWrapper Controller

func (*XController) ScheduleNext 

func (qjm *XController) ScheduleNext(qj *arbv1.AppWrapper)

Thread to find queue-job(QJ) for next schedule

func (*XController) UpdateAgent 

func (qjm *XController) UpdateAgent()

func (*XController) UpdateQueueJobStatus added in v1.34.0 

func (qjm *XController) UpdateQueueJobStatus(queuejob *arbv1.AppWrapper) error

UpdateQueueJobStatus was part of pod informer, this is now a method of queuejob_controller file. This change is done in an effort to simplify the controller and enable to move to controller runtime.

func (*XController) UpdateQueueJobs 

func (qjm *XController) UpdateQueueJobs(newjob *arbv1.AppWrapper)

Move AW from Running to Completed or RunningHoldCompletion Do not use event queues! Running AWs move to Completed, from which it will never transition to any other state. State transition: Running->RunningHoldCompletion->Completed

Source Files

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