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Copy pathqueuejob_controller_ex.go
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queuejob_controller_ex.go
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/*
Copyright 2019, 2021, 2022 The Multi-Cluster App Dispatcher 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.
*/
package queuejob
import (
"context"
jsons "encoding/json"
"errors"
"fmt"
"math"
"math/rand"
"reflect"
"runtime/debug"
"sort"
"strings"
"sync"
"time"
"github.com/eapache/go-resiliency/retrier"
"github.com/gogo/protobuf/proto"
"github.com/hashicorp/go-multierror"
qmutils "github.com/project-codeflare/multi-cluster-app-dispatcher/pkg/quotaplugins/util"
"github.com/project-codeflare/multi-cluster-app-dispatcher/pkg/controller/quota"
"github.com/project-codeflare/multi-cluster-app-dispatcher/pkg/controller/quota/quotaforestmanager"
dto "github.com/prometheus/client_model/go"
"github.com/project-codeflare/multi-cluster-app-dispatcher/cmd/kar-controllers/app/options"
"github.com/project-codeflare/multi-cluster-app-dispatcher/pkg/controller/metrics/adapter"
"github.com/project-codeflare/multi-cluster-app-dispatcher/pkg/metrics"
"k8s.io/apimachinery/pkg/api/equality"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/cache"
"k8s.io/klog/v2"
v1 "k8s.io/api/core/v1"
"github.com/project-codeflare/multi-cluster-app-dispatcher/pkg/controller/queuejobresources"
"github.com/project-codeflare/multi-cluster-app-dispatcher/pkg/controller/queuejobresources/genericresource"
respod "github.com/project-codeflare/multi-cluster-app-dispatcher/pkg/controller/queuejobresources/pod"
"k8s.io/apimachinery/pkg/labels"
arbv1 "github.com/project-codeflare/multi-cluster-app-dispatcher/pkg/apis/controller/v1beta1"
clientset "github.com/project-codeflare/multi-cluster-app-dispatcher/pkg/client/clientset/versioned"
informerFactory "github.com/project-codeflare/multi-cluster-app-dispatcher/pkg/client/informers/externalversions"
arbinformers "github.com/project-codeflare/multi-cluster-app-dispatcher/pkg/client/informers/externalversions/controller/v1beta1"
arblisters "github.com/project-codeflare/multi-cluster-app-dispatcher/pkg/client/listers/controller/v1beta1"
"github.com/project-codeflare/multi-cluster-app-dispatcher/pkg/controller/queuejobdispatch"
clusterstateapi "github.com/project-codeflare/multi-cluster-app-dispatcher/pkg/controller/clusterstate/api"
clusterstatecache "github.com/project-codeflare/multi-cluster-app-dispatcher/pkg/controller/clusterstate/cache"
)
// XController the AppWrapper Controller type
type XController struct {
config *rest.Config
serverOption *options.ServerOption
appwrapperInformer arbinformers.AppWrapperInformer
// resources registered for the AppWrapper
qjobRegisteredResources queuejobresources.RegisteredResources
// controllers for these resources
qjobResControls map[arbv1.ResourceType]queuejobresources.Interface
// Captures all available resources in the cluster
genericresources *genericresource.GenericResources
clients *kubernetes.Clientset
arbclients *clientset.Clientset
// A store of jobs
appWrapperLister arblisters.AppWrapperLister
appWrapperSynced func() bool
// QueueJobs that need to be initialized
// Add labels and selectors to AppWrapper
initQueue *cache.FIFO
// QueueJobs that need to sync up after initialization
updateQueue *cache.FIFO
// eventQueue that need to sync up
eventQueue *cache.FIFO
// QJ queue that needs to be allocated
qjqueue SchedulingQueue
// our own local cache, used for computing total amount of resources
cache clusterstatecache.Cache
// is dispatcher or deployer?
isDispatcher bool
// Agent map: agentID -> JobClusterAgent
agentMap map[string]*queuejobdispatch.JobClusterAgent
agentList []string
// Map for AppWrapper -> JobClusterAgent
dispatchMap map[string]string
// Metrics API Server
metricsAdapter *adapter.MetricsAdapter
// Cluster Metrics Manager
clusterMetricsManager *metrics.ClusterMetricsManager
// EventQueueforAgent
agentEventQueue *cache.FIFO
// Quota Manager
quotaManager quota.QuotaManagerInterface
// Active Scheduling AppWrapper
schedulingAW *arbv1.AppWrapper
schedulingMutex sync.RWMutex
}
type JobAndClusterAgent struct {
queueJobKey string
queueJobAgentKey string
}
// RegisterAllQueueJobResourceTypes - registers all resources
func RegisterAllQueueJobResourceTypes(regs *queuejobresources.RegisteredResources) {
respod.Register(regs)
}
func GetQueueJobKey(obj interface{}) (string, error) {
qj, ok := obj.(*arbv1.AppWrapper)
if !ok {
return "", fmt.Errorf("not a AppWrapper")
}
return fmt.Sprintf("%s/%s", qj.Namespace, qj.Name), nil
}
// NewJobController create new AppWrapper Controller
func NewJobController(config *rest.Config, serverOption *options.ServerOption) *XController {
cc := &XController{
config: config,
serverOption: serverOption,
clients: kubernetes.NewForConfigOrDie(config),
arbclients: clientset.NewForConfigOrDie(config),
eventQueue: cache.NewFIFO(GetQueueJobKey),
agentEventQueue: cache.NewFIFO(GetQueueJobKey),
initQueue: cache.NewFIFO(GetQueueJobKey),
updateQueue: cache.NewFIFO(GetQueueJobKey),
qjqueue: NewSchedulingQueue(),
cache: clusterstatecache.New(config),
schedulingAW: nil,
}
cc.metricsAdapter = adapter.New(serverOption, config, cc.cache)
cc.clusterMetricsManager = metrics.NewClusterMetricsManager(cc.cache)
cc.genericresources = genericresource.NewAppWrapperGenericResource(config)
cc.qjobResControls = map[arbv1.ResourceType]queuejobresources.Interface{}
RegisterAllQueueJobResourceTypes(&cc.qjobRegisteredResources)
// initialize pod sub-resource control
resControlPod, found, err := cc.qjobRegisteredResources.InitQueueJobResource(arbv1.ResourceTypePod, config)
if err != nil {
klog.Errorf("fail to create queuejob resource control")
return nil
}
if !found {
klog.Errorf("queuejob resource type Pod not found")
return nil
}
cc.qjobResControls[arbv1.ResourceTypePod] = resControlPod
appWrapperClient, err := clientset.NewForConfig(cc.config)
if err != nil {
klog.Fatalf("Could not instantiate k8s client, err=%v", err)
}
cc.appwrapperInformer = informerFactory.NewSharedInformerFactory(appWrapperClient, 0).Mcad().V1beta1().AppWrappers()
cc.appwrapperInformer.Informer().AddEventHandler(
cache.FilteringResourceEventHandler{
FilterFunc: func(obj interface{}) bool {
switch t := obj.(type) {
case *arbv1.AppWrapper:
klog.V(10).Infof("[Informer] Filter Name=%s Version=%s Local=%t FilterIgnore=%t Sender=%s &qj=%p qj=%+v", t.Name, t.ResourceVersion, t.Status.Local, t.Status.FilterIgnore, t.Status.Sender, t, t)
// todo: This is a current workaround for duplicate message bug.
// if t.Status.Local == true { // ignore duplicate message from cache
// return false
// }
// t.Status.Local = true // another copy of this will be recognized as duplicate
return true
// return !t.Status.FilterIgnore // ignore update messages
default:
return false
}
},
Handler: cache.ResourceEventHandlerFuncs{
AddFunc: cc.addQueueJob,
UpdateFunc: cc.updateQueueJob,
DeleteFunc: cc.deleteQueueJob,
},
})
cc.appWrapperLister = cc.appwrapperInformer.Lister()
cc.appWrapperSynced = cc.appwrapperInformer.Informer().HasSynced
// Setup Quota
if serverOption.QuotaEnabled {
dispatchedAWDemands, dispatchedAWs := cc.getDispatchedAppWrappers()
cc.quotaManager, err = quotaforestmanager.NewQuotaManager(dispatchedAWDemands, dispatchedAWs, cc.appWrapperLister,
config, serverOption)
if err != nil {
klog.Error("Failed to instantiate quota manager: %#v", err)
return nil
}
} else {
cc.quotaManager = nil
}
// Set dispatcher mode or agent mode
cc.isDispatcher = serverOption.Dispatcher
if cc.isDispatcher {
klog.Infof("[Controller] Dispatcher mode")
} else {
klog.Infof("[Controller] Agent mode")
}
// create agents and agentMap
cc.agentMap = map[string]*queuejobdispatch.JobClusterAgent{}
cc.agentList = []string{}
for _, agentconfig := range strings.Split(serverOption.AgentConfigs, ",") {
agentData := strings.Split(agentconfig, ":")
cc.agentMap["/root/kubernetes/"+agentData[0]] = queuejobdispatch.NewJobClusterAgent(agentconfig, cc.agentEventQueue)
cc.agentList = append(cc.agentList, "/root/kubernetes/"+agentData[0])
}
if cc.isDispatcher && len(cc.agentMap) == 0 {
klog.Errorf("Dispatcher mode: no agent information")
return nil
}
// create (empty) dispatchMap
cc.dispatchMap = map[string]string{}
return cc
}
func (qjm *XController) PreemptQueueJobs() {
ctx := context.Background()
qjobs := qjm.GetQueueJobsEligibleForPreemption()
for _, aw := range qjobs {
if aw.Status.State == arbv1.AppWrapperStateCompleted || aw.Status.State == arbv1.AppWrapperStateDeleted || aw.Status.State == arbv1.AppWrapperStateFailed {
continue
}
var updateNewJob *arbv1.AppWrapper
var message string
newjob, err := qjm.getAppWrapper(aw.Namespace, aw.Name, "[PreemptQueueJobs] get fresh app wrapper")
if err != nil {
klog.Warningf("[PreemptQueueJobs] failed in retrieving a fresh copy of the app wrapper '%s/%s', err=%v. Will try to preempt on the next run.", aw.Namespace, aw.Name, err)
continue
}
newjob.Status.CanRun = false
newjob.Status.FilterIgnore = true // update QueueJobState only
cleanAppWrapper := false
// If dispatch deadline is exceeded no matter what the state of AW, kill the job and set status as Failed.
if (aw.Status.State == arbv1.AppWrapperStateActive) && (aw.Spec.SchedSpec.DispatchDuration.Limit > 0) {
if aw.Spec.SchedSpec.DispatchDuration.Overrun {
index := getIndexOfMatchedCondition(aw, arbv1.AppWrapperCondPreemptCandidate, "DispatchDeadlineExceeded")
if index < 0 {
message = fmt.Sprintf("Dispatch deadline exceeded. allowed to run for %v seconds", aw.Spec.SchedSpec.DispatchDuration.Limit)
cond := GenerateAppWrapperCondition(arbv1.AppWrapperCondPreemptCandidate, v1.ConditionTrue, "DispatchDeadlineExceeded", message)
newjob.Status.Conditions = append(newjob.Status.Conditions, cond)
} else {
cond := GenerateAppWrapperCondition(arbv1.AppWrapperCondPreemptCandidate, v1.ConditionTrue, "DispatchDeadlineExceeded", "")
newjob.Status.Conditions[index] = *cond.DeepCopy()
}
// should the AW state be set in this method??
newjob.Status.State = arbv1.AppWrapperStateFailed
newjob.Status.QueueJobState = arbv1.AppWrapperCondFailed
newjob.Status.Running = 0
updateNewJob = newjob.DeepCopy()
err := qjm.updateStatusInEtcdWithRetry(ctx, updateNewJob, "PreemptQueueJobs - CanRun: false -- DispatchDeadlineExceeded")
if err != nil {
klog.Warningf("[PreemptQueueJobs] status update CanRun: false -- DispatchDeadlineExceeded for '%s/%s' failed", aw.Namespace, aw.Name)
continue
}
// cannot use cleanup AW, since it puts AW back in running state
go qjm.qjqueue.AddUnschedulableIfNotPresent(updateNewJob)
// Move to next AW
continue
}
}
if ((aw.Status.Running + aw.Status.Succeeded) < int32(aw.Spec.SchedSpec.MinAvailable)) && aw.Status.State == arbv1.AppWrapperStateActive {
index := getIndexOfMatchedCondition(aw, arbv1.AppWrapperCondPreemptCandidate, "MinPodsNotRunning")
if index < 0 {
message = fmt.Sprintf("Insufficient number of Running and Completed pods, minimum=%d, running=%d, completed=%d.", aw.Spec.SchedSpec.MinAvailable, aw.Status.Running, aw.Status.Succeeded)
cond := GenerateAppWrapperCondition(arbv1.AppWrapperCondPreemptCandidate, v1.ConditionTrue, "MinPodsNotRunning", message)
newjob.Status.Conditions = append(newjob.Status.Conditions, cond)
} else {
cond := GenerateAppWrapperCondition(arbv1.AppWrapperCondPreemptCandidate, v1.ConditionTrue, "MinPodsNotRunning", "")
newjob.Status.Conditions[index] = *cond.DeepCopy()
}
if aw.Spec.SchedSpec.Requeuing.InitialTimeInSeconds == 0 {
aw.Spec.SchedSpec.Requeuing.InitialTimeInSeconds = aw.Spec.SchedSpec.Requeuing.TimeInSeconds
}
if aw.Spec.SchedSpec.Requeuing.GrowthType == "exponential" {
if newjob.Status.RequeueingTimeInSeconds == 0 {
newjob.Status.RequeueingTimeInSeconds += aw.Spec.SchedSpec.Requeuing.TimeInSeconds
} else {
newjob.Status.RequeueingTimeInSeconds += newjob.Status.RequeueingTimeInSeconds
}
} else if aw.Spec.SchedSpec.Requeuing.GrowthType == "linear" {
newjob.Status.RequeueingTimeInSeconds += aw.Spec.SchedSpec.Requeuing.InitialTimeInSeconds
}
if aw.Spec.SchedSpec.Requeuing.MaxTimeInSeconds > 0 {
if aw.Spec.SchedSpec.Requeuing.MaxTimeInSeconds <= newjob.Status.RequeueingTimeInSeconds {
newjob.Status.RequeueingTimeInSeconds = aw.Spec.SchedSpec.Requeuing.MaxTimeInSeconds
}
}
if newjob.Spec.SchedSpec.Requeuing.MaxNumRequeuings > 0 && newjob.Spec.SchedSpec.Requeuing.NumRequeuings == newjob.Spec.SchedSpec.Requeuing.MaxNumRequeuings {
newjob.Status.State = arbv1.AppWrapperStateDeleted
cleanAppWrapper = true
} else {
newjob.Status.NumberOfRequeueings += 1
}
updateNewJob = newjob.DeepCopy()
} else {
// If pods failed scheduling generate new preempt condition
message = fmt.Sprintf("Pods failed scheduling failed=%v, running=%v.", len(aw.Status.PendingPodConditions), aw.Status.Running)
index := getIndexOfMatchedCondition(newjob, arbv1.AppWrapperCondPreemptCandidate, "PodsFailedScheduling")
// ignore co-scheduler failed scheduling events. This is a temp
// work-around until co-scheduler version 0.22.X perf issues are resolved.
if index < 0 {
cond := GenerateAppWrapperCondition(arbv1.AppWrapperCondPreemptCandidate, v1.ConditionTrue, "PodsFailedScheduling", message)
newjob.Status.Conditions = append(newjob.Status.Conditions, cond)
} else {
cond := GenerateAppWrapperCondition(arbv1.AppWrapperCondPreemptCandidate, v1.ConditionTrue, "PodsFailedScheduling", message)
newjob.Status.Conditions[index] = *cond.DeepCopy()
}
updateNewJob = newjob.DeepCopy()
}
err = qjm.updateStatusInEtcdWithRetry(ctx, updateNewJob, "PreemptQueueJobs - CanRun: false -- MinPodsNotRunning")
if err != nil {
klog.Warningf("[PreemptQueueJobs] status update for '%s/%s' failed, skipping app wrapper err =%v", aw.Namespace, aw.Name, err)
continue
}
if cleanAppWrapper {
klog.V(4).Infof("[PreemptQueueJobs] Deleting AppWrapper %s/%s due to maximum number of re-queueing(s) exceeded.", aw.Name, aw.Namespace)
go qjm.Cleanup(ctx, updateNewJob)
} else {
// Only back-off AWs that are in state running and not in state Failed
if updateNewJob.Status.State != arbv1.AppWrapperStateFailed {
klog.Infof("[PreemptQueueJobs] Adding preempted AppWrapper %s/%s to back off queue.", aw.Name, aw.Namespace)
go qjm.backoff(ctx, updateNewJob, "PreemptionTriggered", string(message))
}
}
}
}
func (qjm *XController) preemptAWJobs(ctx context.Context, preemptAWs []*arbv1.AppWrapper) {
if preemptAWs == nil {
return
}
for _, aw := range preemptAWs {
apiCacheAWJob, err := qjm.getAppWrapper(aw.Namespace, aw.Name, "[preemptAWJobs] get fresh app wrapper")
if err != nil {
if apierrors.IsNotFound(err) {
klog.Warningf("[preemptAWJobs] App wrapper '%s/%s' was not found when getting a fresh copy. ", aw.Namespace, aw.Name)
continue
}
klog.Errorf("[preemptAWJobs] Failed to get AppWrapper to from API Cache %s/%s: err = %v",
aw.Namespace, aw.Name, err)
continue
}
apiCacheAWJob.Status.CanRun = false
err = qjm.updateStatusInEtcdWithRetry(ctx, apiCacheAWJob, "preemptAWJobs - CanRun: false")
if err != nil {
if apierrors.IsNotFound(err) {
klog.Warningf("[preemptAWJobs] App wrapper '%s/%s' was not found when updating status. ", aw.Namespace, aw.Name)
continue
}
klog.Warningf("[preemptAWJobs] status update for '%s/%s' failed, err=%v", aw.Namespace, aw.Name, err)
}
}
}
func (qjm *XController) GetQueueJobsEligibleForPreemption() []*arbv1.AppWrapper {
qjobs := make([]*arbv1.AppWrapper, 0)
queueJobs, err := qjm.appWrapperLister.AppWrappers("").List(labels.Everything())
if err != nil {
klog.Errorf("List of queueJobs %+v", qjobs)
return qjobs
}
if !qjm.isDispatcher { // Agent Mode
for _, value := range queueJobs {
// Skip if AW Pending or just entering the system and does not have a state yet.
if (value.Status.State == arbv1.AppWrapperStateEnqueued) || (value.Status.State == "") {
continue
}
if value.Status.State == arbv1.AppWrapperStateActive && value.Spec.SchedSpec.DispatchDuration.Limit > 0 {
awDispatchDurationLimit := value.Spec.SchedSpec.DispatchDuration.Limit
dispatchDuration := value.Status.ControllerFirstDispatchTimestamp.Add(time.Duration(awDispatchDurationLimit) * time.Second)
currentTime := time.Now()
hasDispatchTimeNotExceeded := currentTime.Before(dispatchDuration)
if !hasDispatchTimeNotExceeded {
klog.V(8).Infof("Appwrapper Dispatch limit exceeded, currentTime %v, dispatchTimeInSeconds %v", currentTime, dispatchDuration)
value.Spec.SchedSpec.DispatchDuration.Overrun = true
qjobs = append(qjobs, value)
// Got AW which exceeded dispatch runtime limit, move to next AW
continue
}
}
replicas := value.Spec.SchedSpec.MinAvailable
if (int(value.Status.Running) + int(value.Status.Succeeded)) < replicas {
// Find the dispatched condition if there is any
numConditions := len(value.Status.Conditions)
var dispatchedCondition arbv1.AppWrapperCondition
dispatchedConditionExists := false
for i := numConditions - 1; i > 0; i-- {
dispatchedCondition = value.Status.Conditions[i]
if dispatchedCondition.Type != arbv1.AppWrapperCondDispatched {
continue
}
dispatchedConditionExists = true
break
}
// Check for the minimum age and then skip preempt if current time is not beyond minimum age
// The minimum age is controlled by the requeuing.TimeInSeconds stanza
// For preemption, the time is compared to the last condition or the dispatched condition in the AppWrapper, whichever happened later
lastCondition := value.Status.Conditions[numConditions-1]
var condition arbv1.AppWrapperCondition
if dispatchedConditionExists && dispatchedCondition.LastTransitionMicroTime.After(lastCondition.LastTransitionMicroTime.Time) {
condition = dispatchedCondition
} else {
condition = lastCondition
}
var requeuingTimeInSeconds int
if value.Status.RequeueingTimeInSeconds > 0 {
requeuingTimeInSeconds = value.Status.RequeueingTimeInSeconds
} else if value.Spec.SchedSpec.Requeuing.InitialTimeInSeconds == 0 {
requeuingTimeInSeconds = value.Spec.SchedSpec.Requeuing.TimeInSeconds
} else {
requeuingTimeInSeconds = value.Spec.SchedSpec.Requeuing.InitialTimeInSeconds
}
minAge := condition.LastTransitionMicroTime.Add(time.Duration(requeuingTimeInSeconds) * time.Second)
currentTime := time.Now()
if currentTime.Before(minAge) {
continue
}
if replicas > 0 {
klog.V(3).Infof("AppWrapper '%s/%s' is eligible for preemption Running: %d - minAvailable: %d , Succeeded: %d !!!", value.Namespace, value.Name, value.Status.Running, replicas, value.Status.Succeeded)
qjobs = append(qjobs, value)
}
} else {
// Preempt when schedulingSpec stanza is not set but pods fails scheduling.
// ignore co-scheduler pods
if len(value.Status.PendingPodConditions) > 0 {
klog.V(3).Infof("AppWrapper '%s/%s' is eligible for preemption Running: %d , Succeeded: %d due to failed scheduling !!!", value.Namespace, value.Status.Running, value.Status.Succeeded)
qjobs = append(qjobs, value)
}
}
}
}
return qjobs
}
func (qjm *XController) GetAggregatedResourcesPerGenericItem(cqj *arbv1.AppWrapper) []*clusterstateapi.Resource {
var retVal []*clusterstateapi.Resource
// Get all pods and related resources
for _, genericItem := range cqj.Spec.AggrResources.GenericItems {
itemsList, _ := genericresource.GetListOfPodResourcesFromOneGenericItem(&genericItem)
for i := 0; i < len(itemsList); i++ {
retVal = append(retVal, itemsList[i])
}
}
return retVal
}
// Gets all objects owned by AW from API server, check user supplied status and set whole AW status
func (qjm *XController) getAppWrapperCompletionStatus(caw *arbv1.AppWrapper) arbv1.AppWrapperState {
// Get all pods and related resources
countCompletionRequired := 0
for i, genericItem := range caw.Spec.AggrResources.GenericItems {
if len(genericItem.CompletionStatus) > 0 {
objectName := genericItem.GenericTemplate
var unstruct unstructured.Unstructured
unstruct.Object = make(map[string]interface{})
var blob interface{}
if err := jsons.Unmarshal(objectName.Raw, &blob); err != nil {
klog.Errorf("[getAppWrapperCompletionStatus] Error unmarshalling, err=%#v", err)
}
unstruct.Object = blob.(map[string]interface{}) // set object to the content of the blob after Unmarshalling
name := ""
if md, ok := unstruct.Object["metadata"]; ok {
metadata := md.(map[string]interface{})
if objectName, ok := metadata["name"]; ok {
name = objectName.(string)
}
}
if len(name) == 0 {
klog.Warningf("[getAppWrapperCompletionStatus] object name not present for appwrapper: '%s/%s", caw.Namespace, caw.Name)
}
klog.V(4).Infof("[getAppWrapperCompletionStatus] Checking if item %d named %s completed for appwrapper: '%s/%s'...", i+1, name, caw.Namespace, caw.Name)
status := qjm.genericresources.IsItemCompleted(&genericItem, caw.Namespace, caw.Name, name)
if !status {
klog.V(4).Infof("[getAppWrapperCompletionStatus] Item %d named %s not completed for appwrapper: '%s/%s'", i+1, name, caw.Namespace, caw.Name)
// early termination because a required item is not completed
return caw.Status.State
}
// only consider count completion required for valid items
countCompletionRequired = countCompletionRequired + 1
}
}
klog.V(4).Infof("[getAppWrapperCompletionStatus] App wrapper '%s/%s' countCompletionRequired %d, podsRunning %d, podsPending %d", caw.Namespace, caw.Name, countCompletionRequired, caw.Status.Running, caw.Status.Pending)
// Set new status only when completion required flag is present in genericitems array
if countCompletionRequired > 0 {
if caw.Status.Running == 0 && caw.Status.Pending == 0 {
return arbv1.AppWrapperStateCompleted
}
if caw.Status.Pending > 0 || caw.Status.Running > 0 {
return arbv1.AppWrapperStateRunningHoldCompletion
}
}
// return previous condition
return caw.Status.State
}
func (qjm *XController) GetAggregatedResources(cqj *arbv1.AppWrapper) *clusterstateapi.Resource {
allocated := clusterstateapi.EmptyResource()
for _, genericItem := range cqj.Spec.AggrResources.GenericItems {
qjv, err := genericresource.GetResources(&genericItem)
if err != nil {
klog.V(8).Infof("[GetAggregatedResources] Failure aggregating resources for %s/%s, err=%#v, genericItem=%#v",
cqj.Namespace, cqj.Name, err, genericItem)
}
allocated = allocated.Add(qjv)
}
return allocated
}
func (qjm *XController) getProposedPreemptions(requestingJob *arbv1.AppWrapper, availableResourcesWithoutPreemption *clusterstateapi.Resource,
preemptableAWs map[float64][]string, preemptableAWsMap map[string]*arbv1.AppWrapper) []*arbv1.AppWrapper {
if requestingJob == nil {
klog.Warning("[getProposedPreemptions] Invalid job to evaluate. Job is set to nil.")
return nil
}
aggJobReq := qjm.GetAggregatedResources(requestingJob)
if aggJobReq.LessEqual(availableResourcesWithoutPreemption) {
klog.V(10).Infof("[getProposedPreemptions] Job fits without preemption.")
return nil
}
if preemptableAWs == nil || len(preemptableAWs) < 1 {
klog.V(10).Infof("[getProposedPreemptions] No preemptable jobs.")
return nil
} else {
klog.V(10).Infof("[getProposedPreemptions] Processing %v candidate jobs for preemption.", len(preemptableAWs))
}
// Sort keys of map
priorityKeyValues := make([]float64, len(preemptableAWs))
i := 0
for key := range preemptableAWs {
priorityKeyValues[i] = key
i++
}
sort.Float64s(priorityKeyValues)
// Get list of proposed preemptions
var proposedPreemptions []*arbv1.AppWrapper
foundEnoughResources := false
preemptable := clusterstateapi.EmptyResource()
for _, priorityKey := range priorityKeyValues {
if foundEnoughResources {
break
}
appWrapperIds := preemptableAWs[priorityKey]
for _, awId := range appWrapperIds {
aggaw := qjm.GetAggregatedResources(preemptableAWsMap[awId])
preemptable.Add(aggaw)
klog.V(4).Infof("[getProposedPreemptions] Adding %s to proposed preemption list on order to dispatch: %s.", awId, requestingJob.Name)
proposedPreemptions = append(proposedPreemptions, preemptableAWsMap[awId])
if aggJobReq.LessEqual(preemptable) {
foundEnoughResources = true
break
}
}
}
if !foundEnoughResources {
klog.V(10).Infof("[getProposedPreemptions] Not enought preemptable jobs to dispatch %s.", requestingJob.Name)
}
return proposedPreemptions
}
func (qjm *XController) getDispatchedAppWrappers() (map[string]*clusterstateapi.Resource, map[string]*arbv1.AppWrapper) {
awrRetVal := make(map[string]*clusterstateapi.Resource)
awsRetVal := make(map[string]*arbv1.AppWrapper)
// Setup and break down an informer to get a list of appwrappers bofore controllerinitialization completes
appWrapperClient, err := clientset.NewForConfig(qjm.config)
if err != nil {
klog.Errorf("[getDispatchedAppWrappers] Failure creating client for initialization informer err=%#v", err)
return awrRetVal, awsRetVal
}
queueJobInformer := informerFactory.NewSharedInformerFactory(appWrapperClient, 0).Mcad().V1beta1().AppWrappers()
queueJobInformer.Informer().AddEventHandler(
cache.FilteringResourceEventHandler{
FilterFunc: func(obj interface{}) bool {
switch t := obj.(type) {
case *arbv1.AppWrapper:
klog.V(10).Infof("[getDispatchedAppWrappers] Filtered name=%s/%s",
t.Namespace, t.Name)
return true
default:
return false
}
},
Handler: cache.ResourceEventHandlerFuncs{
AddFunc: qjm.addQueueJob,
UpdateFunc: qjm.updateQueueJob,
DeleteFunc: qjm.deleteQueueJob,
},
})
queueJobLister := queueJobInformer.Lister()
queueJobSynced := queueJobInformer.Informer().HasSynced
stopCh := make(chan struct{})
defer close(stopCh)
go queueJobInformer.Informer().Run(stopCh)
cache.WaitForCacheSync(stopCh, queueJobSynced)
appwrappers, err := queueJobLister.AppWrappers("").List(labels.Everything())
if err != nil {
klog.Errorf("[getDispatchedAppWrappers] List of AppWrappers err=%+v", err)
return awrRetVal, awsRetVal
}
for _, aw := range appwrappers {
// Get dispatched jobs
if aw.Status.CanRun {
id := qmutils.CreateId(aw.Namespace, aw.Name)
awrRetVal[id] = qjm.GetAggregatedResources(aw)
awsRetVal[id] = aw
}
}
klog.V(10).Infof("[getDispatchedAppWrappers] List of runnable AppWrappers dispatched or to be dispatched: %+v",
awrRetVal)
return awrRetVal, awsRetVal
}
func (qjm *XController) addTotalSnapshotResourcesConsumedByAw(totalgpu int32, totalcpu int32, totalmemory int32) *clusterstateapi.Resource {
totalResource := clusterstateapi.EmptyResource()
totalResource.GPU = int64(totalgpu)
totalResource.MilliCPU = float64(totalcpu)
totalResource.Memory = float64(totalmemory)
return totalResource
}
func (qjm *XController) getAggregatedAvailableResourcesPriority(unallocatedClusterResources *clusterstateapi.
Resource, targetpr float64, requestingJob *arbv1.AppWrapper, agentId string) (*clusterstateapi.Resource, []*arbv1.AppWrapper) {
//get available free resources in the cluster.
r := unallocatedClusterResources.Clone()
// Track preemption resources
preemptable := clusterstateapi.EmptyResource()
preemptableAWs := make(map[float64][]string)
preemptableAWsMap := make(map[string]*arbv1.AppWrapper)
// Resources that can fit but have not dispatched.
pending := clusterstateapi.EmptyResource()
klog.V(3).Infof("[getAggAvaiResPri] Idle cluster resources %+v", r)
queueJobs, err := qjm.appWrapperLister.AppWrappers("").List(labels.Everything())
if err != nil {
klog.Errorf("[getAggAvaiResPri] Unable to obtain the list of queueJobs %+v", err)
return r, nil
}
//for all AWs that have canRun status are true
//in non-preemption mode, we reserve resources for AWs
//reserving is done by subtracting total AW resources from pods owned by AW that are running or completed.
// AW can be running but items owned by it can be completed or there might be new set of pods yet to be spawned
for _, value := range queueJobs {
klog.V(10).Infof("[getAggAvaiResPri] %s: Evaluating job: %s to calculate aggregated resources.", time.Now().String(), value.Name)
if value.Name == requestingJob.Name {
klog.V(11).Infof("[getAggAvaiResPri] %s: Skipping adjustments for %s since it is the job being processed.", time.Now().String(), value.Name)
continue
} else if !value.Status.CanRun {
// canRun is false when AW completes or it is preempted
// when preempted AW is cleanedup and resources will be released by preempt thread
// when AW is completed cluster state will reflect available resources
// in both cases we do not account for resources.
klog.V(6).Infof("[getAggAvaiResPri] %s: AW %s cannot run, so not accounting resoources", time.Now().String(), value.Name)
continue
} else if value.Status.SystemPriority < targetpr {
// Dispatcher Mode: Ensure this job is part of the target cluster
if qjm.isDispatcher {
// Get the job key
klog.V(10).Infof("[getAggAvaiResPri] %s: Getting job key for: %s.", time.Now().String(), value.Name)
queueJobKey, _ := GetQueueJobKey(value)
klog.V(10).Infof("[getAggAvaiResPri] %s: Getting dispatchid for: %s.", time.Now().String(), queueJobKey)
dispatchedAgentId := qjm.dispatchMap[queueJobKey]
// If this is not in the same cluster then skip
if strings.Compare(dispatchedAgentId, agentId) != 0 {
klog.V(10).Infof("[getAggAvaiResPri] %s: Skipping adjustments for %s since it is in cluster %s which is not in the same cluster under evaluation: %s.",
time.Now().String(), value.Name, dispatchedAgentId, agentId)
continue
}
}
err := qjm.qjobResControls[arbv1.ResourceTypePod].UpdateQueueJobStatus(value)
if err != nil {
klog.Warningf("[getAggAvaiResPri] Error updating pod status counts for AppWrapper job: %s, err=%+v", value.Name, err)
}
totalResource := qjm.addTotalSnapshotResourcesConsumedByAw(value.Status.TotalGPU, value.Status.TotalCPU, value.Status.TotalMemory)
klog.V(10).Infof("[getAggAvaiResPri] total resources consumed by Appwrapper %v when lower priority compared to target are %v", value.Name, totalResource)
preemptable = preemptable.Add(totalResource)
klog.V(6).Infof("[getAggAvaiResPri] %s proirity %v is lower target priority %v reclaiming total preemptable resources %v", value.Name, value.Status.SystemPriority, targetpr, totalResource)
queueJobKey, _ := GetQueueJobKey(value)
addPreemptableAWs(preemptableAWs, value, queueJobKey, preemptableAWsMap)
continue
} else if qjm.isDispatcher {
// Dispatcher job does not currently track pod states. This is
// a workaround until implementation of pod state is complete.
// Currently calculation for available resources only considers priority.
klog.V(10).Infof("[getAggAvaiResPri] %s: Skipping adjustments for %s since priority %f is >= %f of requesting job: %s.", time.Now().String(),
value.Name, value.Status.SystemPriority, targetpr, requestingJob.Name)
continue
} else if value.Status.CanRun {
qjv := clusterstateapi.EmptyResource()
for _, genericItem := range value.Spec.AggrResources.GenericItems {
res, _ := genericresource.GetResources(&genericItem)
qjv.Add(res)
klog.V(10).Infof("[getAggAvaiResPri] Subtract all resources %+v in genericItem=%T for job %s which can-run is set to: %v but state is still pending.", qjv, genericItem, value.Name, value.Status.CanRun)
}
err := qjm.qjobResControls[arbv1.ResourceTypePod].UpdateQueueJobStatus(value)
if err != nil {
klog.Warningf("[getAggAvaiResPri] Error updating pod status counts for AppWrapper job: %s, err=%+v", value.Name, err)
}
totalResource := qjm.addTotalSnapshotResourcesConsumedByAw(value.Status.TotalGPU, value.Status.TotalCPU, value.Status.TotalMemory)
klog.V(6).Infof("[getAggAvaiResPri] total resources consumed by Appwrapper %v when CanRun are %v", value.Name, totalResource)
delta, err := qjv.NonNegSub(totalResource)
pending = pending.Add(delta)
if err != nil {
klog.Warningf("[getAggAvaiResPri] Subtraction of resources failed, adding entire appwrapper resoources %v, %v", qjv, err)
pending = pending.Add(qjv)
}
klog.V(6).Infof("[getAggAvaiResPri] The value of pending is %v", pending)
continue
}
}
proposedPremptions := qjm.getProposedPreemptions(requestingJob, r, preemptableAWs, preemptableAWsMap)
klog.V(6).Infof("[getAggAvaiResPri] Schedulable idle cluster resources: %+v, subtracting dispatched resources: %+v and adding preemptable cluster resources: %+v", r, pending, preemptable)
r = r.Add(preemptable)
r, _ = r.NonNegSub(pending)
klog.V(3).Infof("[getAggAvaiResPri] %+v available resources to schedule", r)
return r, proposedPremptions
}
func addPreemptableAWs(preemptableAWs map[float64][]string, value *arbv1.AppWrapper, queueJobKey string, preemptableAWsMap map[string]*arbv1.AppWrapper) {
preemptableAWs[value.Status.SystemPriority] = append(preemptableAWs[value.Status.SystemPriority], queueJobKey)
preemptableAWsMap[queueJobKey] = value
klog.V(10).Infof("[getAggAvaiResPri] %s: Added %s to candidate preemptable job with priority %f.", time.Now().String(), value.Name, value.Status.SystemPriority)
}
func (qjm *XController) chooseAgent(ctx context.Context, qj *arbv1.AppWrapper) string {
qjAggrResources := qjm.GetAggregatedResources(qj)
klog.V(2).Infof("[chooseAgent] Aggregated Resources of XQJ %s: %v\n", qj.Name, qjAggrResources)
agentId := qjm.agentList[rand.Int()%len(qjm.agentList)]
klog.V(2).Infof("[chooseAgent] Agent %s is chosen randomly\n", agentId)
unallocatedResources := qjm.agentMap[agentId].AggrResources
priorityindex := qj.Status.SystemPriority
resources, proposedPreemptions := qjm.getAggregatedAvailableResourcesPriority(unallocatedResources, priorityindex, qj, agentId)
klog.V(2).Infof("[chooseAgent] Aggr Resources of Agent %s: %v\n", agentId, resources)
if qjAggrResources.LessEqual(resources) {
klog.V(2).Infof("[chooseAgent] Agent %s has enough resources\n", agentId)
// Now evaluate quota
if qjm.serverOption.QuotaEnabled {
if qjm.quotaManager != nil {
if fits, preemptAWs, _ := qjm.quotaManager.Fits(qj, qjAggrResources, proposedPreemptions); fits {
klog.V(2).Infof("[chooseAgent] AppWrapper %s has enough quota.\n", qj.Name)
qjm.preemptAWJobs(ctx, preemptAWs)
return agentId
} else {
klog.V(2).Infof("[chooseAgent] AppWrapper %s does not have enough quota\n", qj.Name)
}
} else {
klog.Errorf("[chooseAgent] Quota evaluation is enable but not initialize. AppWrapper %s/%s does not have enough quota\n", qj.Name, qj.Namespace)
}
} else {
// Quota is not enabled to return selected agent
return agentId
}
} else {
klog.V(2).Infof("[chooseAgent] Agent %s does not have enough resources\n", agentId)
}
return ""
}
func (qjm *XController) nodeChecks(histograms map[string]*dto.Metric, aw *arbv1.AppWrapper) bool {
ok := true
allPods := qjm.GetAggregatedResourcesPerGenericItem(aw)
// Check only GPUs at this time
var podsToCheck []*clusterstateapi.Resource
for _, pod := range allPods {
if pod.GPU > 0 {
podsToCheck = append(podsToCheck, pod)
}
}
gpuHistogram := histograms["gpu"]
if gpuHistogram != nil {
buckets := gpuHistogram.Histogram.Bucket
// Go through pods needing checking
for _, gpuPod := range podsToCheck {
// Go through each bucket of the histogram to find a valid bucket
bucketFound := false
for _, bucket := range buckets {
ub := bucket.UpperBound
if ub == nil {
klog.Errorf("Unable to get upperbound of histogram bucket.")
continue
}
c := bucket.GetCumulativeCount()
var fGPU float64 = float64(gpuPod.GPU)
if fGPU < *ub && c > 1 {
// Found a valid node
bucketFound = true
break
}
}
if !bucketFound {
ok = false
break
}
}
}
return ok
}
// Thread to find queue-job(QJ) for next schedule
func (qjm *XController) ScheduleNext() {
ctx := context.Background()
// get next QJ from the queue
// check if we have enough compute resources for it
// if we have enough compute resources then we set the AllocatedReplicas to the total
// amount of resources asked by the job
qj, err := qjm.qjqueue.Pop()
if err != nil {
klog.Errorf("[ScheduleNext] Cannot pop QueueJob from qjqueue! err=%#v", err)
return // Try to pop qjqueue again
}
qjm.schedulingMutex.Lock()
qjm.schedulingAW = qj
qjm.schedulingMutex.Unlock()
// ensure that current active appwrapper is reset at the end of this function, to prevent
// the appwrapper from being added in syncjob
defer qjm.schedulingAWAtomicSet(nil)
scheduleNextRetrier := retrier.New(retrier.ExponentialBackoff(1, 100*time.Millisecond), &EtcdErrorClassifier{})
scheduleNextRetrier.SetJitter(0.05)
// Retry the execution
err = scheduleNextRetrier.Run(func() error {
klog.Infof("[ScheduleNext] activeQ.Pop %s *Delay=%.6f seconds RemainingLength=%d &qj=%p Version=%s Status=%+v", qj.Name, time.Now().Sub(qj.Status.ControllerFirstTimestamp.Time).Seconds(), qjm.qjqueue.Length(), qj,
qj.ResourceVersion, qj.Status)
apiCacheAWJob, retryErr := qjm.getAppWrapper(qj.Namespace, qj.Name, "[ScheduleNext] -- get fresh copy after queue pop")
if retryErr != nil {
if apierrors.IsNotFound(retryErr) {
klog.Warningf("[ScheduleNext] app wrapper '%s/%s' not found skiping dispatch", qj.Namespace, qj.Name)
return nil
}
klog.Errorf("[ScheduleNext] Unable to get AW %s from API cache &aw=%p Version=%s Status=%+v err=%#v", qj.Name, qj, qj.ResourceVersion, qj.Status, retryErr)
return retryErr
}
// make sure qj has the latest information
if larger(apiCacheAWJob.ResourceVersion, qj.ResourceVersion) {
klog.V(10).Infof("[ScheduleNext] '%s/%s' found more recent copy from cache &qj=%p qj=%+v", qj.Namespace, qj.Name, qj, qj)
klog.V(10).Infof("[ScheduleNext] '%s/%s' found more recent copy from cache &apiQueueJob=%p apiQueueJob=%+v", apiCacheAWJob.Namespace, apiCacheAWJob.Name, apiCacheAWJob, apiCacheAWJob)
apiCacheAWJob.DeepCopyInto(qj)
}
if qj.Status.CanRun {
klog.V(4).Infof("[ScheduleNext] AppWrapper '%s/%s' from priority queue is already scheduled. Ignoring request: Status=%+v", qj.Namespace, qj.Name, qj.Status)
return nil
}
// Re-compute SystemPriority for DynamicPriority policy
if qjm.serverOption.DynamicPriority {
klog.V(4).Info("[ScheduleNext] dynamic priority enabled")
// Create newHeap to temporarily store qjqueue jobs for updating SystemPriority
tempQ := newHeap(cache.MetaNamespaceKeyFunc, HigherSystemPriorityQJ)
qj.Status.SystemPriority = float64(qj.Spec.Priority) + qj.Spec.PrioritySlope*(time.Now().Sub(qj.Status.ControllerFirstTimestamp.Time)).Seconds()
tempQ.Add(qj)
for qjm.qjqueue.Length() > 0 {
qjtemp, _ := qjm.qjqueue.Pop()
qjtemp.Status.SystemPriority = float64(qjtemp.Spec.Priority) + qjtemp.Spec.PrioritySlope*(time.Now().Sub(qjtemp.Status.ControllerFirstTimestamp.Time)).Seconds()
tempQ.Add(qjtemp)
}
// move AppWrappers back to activeQ and sort based on SystemPriority
for tempQ.data.Len() > 0 {
qjtemp, _ := tempQ.Pop()
qjm.qjqueue.AddIfNotPresent(qjtemp.(*arbv1.AppWrapper))
}
// Print qjqueue.ativeQ for debugging
if klog.V(4).Enabled() {
pq := qjm.qjqueue.(*PriorityQueue)
if qjm.qjqueue.Length() > 0 {
for key, element := range pq.activeQ.data.items {
qjtemp := element.obj
klog.V(4).Infof("[ScheduleNext] AfterCalc: qjqLength=%d Key=%s index=%d Priority=%.1f SystemPriority=%.1f QueueJobState=%s",
qjm.qjqueue.Length(), key, element.index, float64(qjtemp.Spec.Priority), qjtemp.Status.SystemPriority, qjtemp.Status.QueueJobState)
}
}
}
// Retrieve HeadOfLine after priority update
qj, retryErr = qjm.qjqueue.Pop()
if retryErr != nil {
klog.V(3).Infof("[ScheduleNext] Cannot pop QueueJob from qjqueue! err=%#v", retryErr)