Gang min cardinality (#2994)

* Wire in min cardinality (#8) * Wire up minimum gang cardinality * Wire up minimum gang cardinality * Wire up minimum gang cardinality * Wire up minimum gang cardinality * Bump armada airflow operator to version 0.5.4 (#2961) * Bump armada airflow operator to version 0.5.4 Signed-off-by: Rich Scott <richscott@sent.com> * Regenerate Airflow Operator Markdown doc. Signed-off-by: Rich Scott <richscott@sent.com> * Fix regenerated Airflow doc error. Signed-off-by: Rich Scott <richscott@sent.com> * Pin versions of all modules, especially around docs generation. Signed-off-by: Rich Scott <richscott@sent.com> * Regenerate Airflow docs using Python 3.10 Signed-off-by: Rich Scott <richscott@sent.com> --------- Signed-off-by: Rich Scott <richscott@sent.com> * Infer failed jobs from job context, tidy up * Infer failed jobs from job context, tidy up * Magefile: Clean all Makefile refernces (#2957) * tiny naming change * clean all make refernces Signed-off-by: mohamed <mohamedabdelfatah2027@gmail.com> --------- Signed-off-by: mohamed <mohamedabdelfatah2027@gmail.com> * Infer failed jobs from job context, tidy up * Revert to previous unpinned airflow version spec. (#2967) * Revert to previous unpinned airflow version spec. Signed-off-by: Rich Scott <richscott@sent.com> * Increment armada-airflow module version. Signed-off-by: Rich Scott <richscott@sent.com> --------- Signed-off-by: Rich Scott <richscott@sent.com> * Only fail gang jobs when the overall gang min cardinality is set. Fix error handling * Only fail gang jobs when the overall gang min cardinality is set. Fix error handling * Only fail gang jobs when the overall gang min cardinality is set. Fix error handling * Update jobdb with any excess gang jobs that failed * ArmadaContext.Log Improvements (#2965) * log error * context log * context log * add cycle id * typo * lint * refactor armadacontext to implement a FieldLogger --------- Co-authored-by: Chris Martin <chris@cmartinit.co.uk> * Fix-up existing tests before adding new ones * Add new tests for minimum gang sizes * Test that excess failed gang jobs are committed to jobdb * Run `on.push` only for master (#2968) * Run On Push only for master Signed-off-by: mohamed <mohamedabdelfatah2027@gmail.com> * remove not-workflows Signed-off-by: mohamed <mohamedabdelfatah2027@gmail.com> --------- Signed-off-by: mohamed <mohamedabdelfatah2027@gmail.com> * Add test for failed job pulsar messages * Tidy tests * WIP: Airflow: fix undefined poll_interval in Deferrable Operator (#2975) * Airflow: handle poll_interval attr in ArmadaJobCompleteTrigger Fix incomplete handling of 'poll_interval' attribute in ArmadaJobCompleteTrigger, used by the Armada Deferrable Operator for Airflow. Signed-off-by: Rich Scott <richscott@sent.com> * Airflow - add unit test for armada deferrable operator Run much of the same tests for the deferrable operator as for the regular operator, plus test serialization. Also, update interval signifier in examples. A full test of the deferrable operator that verifies the trigger handling is still needed. Signed-off-by: Rich Scott <richscott@sent.com> --------- Signed-off-by: Rich Scott <richscott@sent.com> * Release Airflow Operator v0.5.6 (#2979) Signed-off-by: Rich Scott <richscott@sent.com> * #2905 - fix indentation (#2971) Co-authored-by: Mohamed Abdelfatah <39927413+Mo-Fatah@users.noreply.github.com> Co-authored-by: Adam McArthur <46480158+Sharpz7@users.noreply.github.com> Signed-off-by: Rich Scott <richscott@sent.com> Signed-off-by: mohamed <mohamedabdelfatah2027@gmail.com> Co-authored-by: Rich Scott <rich@gr-oss.io> Co-authored-by: Mohamed Abdelfatah <39927413+Mo-Fatah@users.noreply.github.com> Co-authored-by: Chris Martin <council_tax@hotmail.com> Co-authored-by: Chris Martin <chris@cmartinit.co.uk> Co-authored-by: Dave Gantenbein <dave@gr-oss.io> Co-authored-by: Adam McArthur <46480158+Sharpz7@users.noreply.github.com> * Remove unintentional diffs * Run formatting tools * Fix formatting * Re-run proto gen + dotnet gen * Validate gang min cardinality is <= gang cardinality * mage proto * Tidying --------- Signed-off-by: Rich Scott <richscott@sent.com> Signed-off-by: mohamed <mohamedabdelfatah2027@gmail.com> Co-authored-by: Mark Sumner <Mark.Sumner@gresearch.co.uk> Co-authored-by: Rich Scott <rich@gr-oss.io> Co-authored-by: Mohamed Abdelfatah <39927413+Mo-Fatah@users.noreply.github.com> Co-authored-by: Chris Martin <council_tax@hotmail.com> Co-authored-by: Chris Martin <chris@cmartinit.co.uk> Co-authored-by: Dave Gantenbein <dave@gr-oss.io> Co-authored-by: Adam McArthur <46480158+Sharpz7@users.noreply.github.com> Co-authored-by: Albin Severinson <albin@severinson.org>
armadaproject · Oct 9, 2023 · 8ad1232 · 8ad1232
1 parent 92fec56
commit 8ad1232
Show file tree

Hide file tree

Showing 23 changed files with 1,002 additions and 394 deletions.
diff --git a/internal/scheduler/common.go b/internal/scheduler/common.go
@@ -24,6 +24,9 @@ type SchedulerResult struct {
 	PreemptedJobs []interfaces.LegacySchedulerJob
 	// Queued jobs that should be scheduled.
 	ScheduledJobs []interfaces.LegacySchedulerJob
+	// Queued jobs that could not be scheduled.
+	// This is used to fail jobs that could not schedule above `minimumGangCardinality`.
+	FailedJobs []interfaces.LegacySchedulerJob
 	// For each preempted job, maps the job id to the id of the node on which the job was running.
 	// For each scheduled job, maps the job id to the id of the node on which the job should be scheduled.
 	NodeIdByJobId map[string]string
@@ -32,9 +35,10 @@ type SchedulerResult struct {
 	SchedulingContexts []*schedulercontext.SchedulingContext
 }
 
-func NewSchedulerResult[S ~[]T, T interfaces.LegacySchedulerJob](
+func NewSchedulerResultForTest[S ~[]T, T interfaces.LegacySchedulerJob](
 	preemptedJobs S,
 	scheduledJobs S,
+	failedJobs S,
 	nodeIdByJobId map[string]string,
 ) *SchedulerResult {
 	castPreemptedJobs := make([]interfaces.LegacySchedulerJob, len(preemptedJobs))
@@ -45,10 +49,15 @@ func NewSchedulerResult[S ~[]T, T interfaces.LegacySchedulerJob](
 	for i, job := range scheduledJobs {
 		castScheduledJobs[i] = job
 	}
+	castFailedJobs := make([]interfaces.LegacySchedulerJob, len(failedJobs))
+	for i, job := range failedJobs {
+		castFailedJobs[i] = job
+	}
 	return &SchedulerResult{
 		PreemptedJobs: castPreemptedJobs,
 		ScheduledJobs: castScheduledJobs,
 		NodeIdByJobId: nodeIdByJobId,
+		FailedJobs:    castFailedJobs,
 	}
 }
 
@@ -72,6 +81,16 @@ func ScheduledJobsFromSchedulerResult[T interfaces.LegacySchedulerJob](sr *Sched
 	return rv
 }
 
+// FailedJobsFromScheduleResult returns the slice of scheduled jobs in the result,
+// cast to type T.
+func FailedJobsFromSchedulerResult[T interfaces.LegacySchedulerJob](sr *SchedulerResult) []T {
+	rv := make([]T, len(sr.FailedJobs))
+	for i, job := range sr.FailedJobs {
+		rv[i] = job.(T)
+	}
+	return rv
+}
+
 // JobsSummary returns a string giving an overview of the provided jobs meant for logging.
 // For example: "affected queues [A, B]; resources {A: {cpu: 1}, B: {cpu: 2}}; jobs [jobAId, jobBId]".
 func JobsSummary(jobs []interfaces.LegacySchedulerJob) string {
@@ -132,22 +151,22 @@ func GangIdAndCardinalityFromLegacySchedulerJob(job interfaces.LegacySchedulerJo
 // GangIdAndCardinalityFromAnnotations returns a tuple (gangId, gangCardinality, gangMinimumCardinality, isGangJob, error).
 func GangIdAndCardinalityFromAnnotations(annotations map[string]string) (string, int, int, bool, error) {
 	if annotations == nil {
-		return "", 0, 0, false, nil
+		return "", 1, 1, false, nil
 	}
 	gangId, ok := annotations[configuration.GangIdAnnotation]
 	if !ok {
-		return "", 0, 0, false, nil
+		return "", 1, 1, false, nil
 	}
 	gangCardinalityString, ok := annotations[configuration.GangCardinalityAnnotation]
 	if !ok {
-		return "", 0, 0, false, errors.Errorf("missing annotation %s", configuration.GangCardinalityAnnotation)
+		return "", 1, 1, false, errors.Errorf("missing annotation %s", configuration.GangCardinalityAnnotation)
 	}
 	gangCardinality, err := strconv.Atoi(gangCardinalityString)
 	if err != nil {
-		return "", 0, 0, false, errors.WithStack(err)
+		return "", 1, 1, false, errors.WithStack(err)
 	}
 	if gangCardinality <= 0 {
-		return "", 0, 0, false, errors.Errorf("gang cardinality is non-positive %d", gangCardinality)
+		return "", 1, 1, false, errors.Errorf("gang cardinality is non-positive %d", gangCardinality)
 	}
 	gangMinimumCardinalityString, ok := annotations[configuration.GangMinimumCardinalityAnnotation]
 	if !ok {
@@ -156,10 +175,13 @@ func GangIdAndCardinalityFromAnnotations(annotations map[string]string) (string,
 	} else {
 		gangMinimumCardinality, err := strconv.Atoi(gangMinimumCardinalityString)
 		if err != nil {
-			return "", 0, 0, false, errors.WithStack(err)
+			return "", 1, 1, false, errors.WithStack(err)
 		}
 		if gangMinimumCardinality <= 0 {
-			return "", 0, 0, false, errors.Errorf("gang minimum cardinality is non-positive %d", gangMinimumCardinality)
+			return "", 1, 1, false, errors.Errorf("gang minimum cardinality is non-positive %d", gangMinimumCardinality)
+		}
+		if gangMinimumCardinality > gangCardinality {
+			return "", 1, 1, false, errors.Errorf("gang minimum cardinality %d cannot be greater than gang cardinality %d", gangMinimumCardinality, gangCardinality)
 		}
 		return gangId, gangCardinality, gangMinimumCardinality, true, nil
 	}

diff --git a/internal/scheduler/context/context.go b/internal/scheduler/context/context.go
@@ -226,15 +226,20 @@ func (sctx *SchedulingContext) ReportString(verbosity int32) string {
 func (sctx *SchedulingContext) AddGangSchedulingContext(gctx *GangSchedulingContext) (bool, error) {
 	allJobsEvictedInThisRound := true
 	allJobsSuccessful := true
+	numberOfSuccessfulJobs := 0
 	for _, jctx := range gctx.JobSchedulingContexts {
 		evictedInThisRound, err := sctx.AddJobSchedulingContext(jctx)
 		if err != nil {
 			return false, err
 		}
 		allJobsEvictedInThisRound = allJobsEvictedInThisRound && evictedInThisRound
-		allJobsSuccessful = allJobsSuccessful && jctx.IsSuccessful()
+		isSuccess := jctx.IsSuccessful()
+		allJobsSuccessful = allJobsSuccessful && isSuccess
+		if isSuccess {
+			numberOfSuccessfulJobs++
+		}
 	}
-	if allJobsSuccessful && !allJobsEvictedInThisRound {
+	if numberOfSuccessfulJobs >= gctx.GangMinCardinality && !allJobsEvictedInThisRound {
 		sctx.NumScheduledGangs++
 	}
 	return allJobsEvictedInThisRound, nil
@@ -458,15 +463,6 @@ func (qctx *QueueSchedulingContext) ReportString(verbosity int32) string {
 	return sb.String()
 }
 
-func (qctx *QueueSchedulingContext) AddGangSchedulingContext(gctx *GangSchedulingContext) error {
-	for _, jctx := range gctx.JobSchedulingContexts {
-		if _, err := qctx.AddJobSchedulingContext(jctx); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
 // AddJobSchedulingContext adds a job scheduling context.
 // Automatically updates scheduled resources.
 func (qctx *QueueSchedulingContext) AddJobSchedulingContext(jctx *JobSchedulingContext) (bool, error) {
@@ -542,6 +538,7 @@ type GangSchedulingContext struct {
 	TotalResourceRequests schedulerobjects.ResourceList
 	AllJobsEvicted        bool
 	NodeUniformityLabel   string
+	GangMinCardinality    int
 }
 
 func NewGangSchedulingContext(jctxs []*JobSchedulingContext) *GangSchedulingContext {
@@ -550,12 +547,14 @@ func NewGangSchedulingContext(jctxs []*JobSchedulingContext) *GangSchedulingCont
 	queue := ""
 	priorityClassName := ""
 	nodeUniformityLabel := ""
+	gangMinCardinality := 1
 	if len(jctxs) > 0 {
 		queue = jctxs[0].Job.GetQueue()
 		priorityClassName = jctxs[0].Job.GetPriorityClassName()
 		if jctxs[0].PodRequirements != nil {
 			nodeUniformityLabel = jctxs[0].PodRequirements.Annotations[configuration.GangNodeUniformityLabelAnnotation]
 		}
+		gangMinCardinality = jctxs[0].GangMinCardinality
 	}
 	allJobsEvicted := true
 	totalResourceRequests := schedulerobjects.NewResourceList(4)
@@ -571,6 +570,7 @@ func NewGangSchedulingContext(jctxs []*JobSchedulingContext) *GangSchedulingCont
 		TotalResourceRequests: totalResourceRequests,
 		AllJobsEvicted:        allJobsEvicted,
 		NodeUniformityLabel:   nodeUniformityLabel,
+		GangMinCardinality:    gangMinCardinality,
 	}
 }
 
@@ -600,6 +600,10 @@ type JobSchedulingContext struct {
 	UnschedulableReason string
 	// Pod scheduling contexts for the individual pods that make up the job.
 	PodSchedulingContext *PodSchedulingContext
+	// The minimum size of the gang associated with this job.
+	GangMinCardinality int
+	// If set, indicates this job should be failed back to the client when the gang is scheduled.
+	ShouldFail bool
 }
 
 func (jctx *JobSchedulingContext) String() string {
@@ -615,6 +619,7 @@ func (jctx *JobSchedulingContext) String() string {
 	if jctx.PodSchedulingContext != nil {
 		fmt.Fprint(w, jctx.PodSchedulingContext.String())
 	}
+	fmt.Fprintf(w, "GangMinCardinality:\t%d\n", jctx.GangMinCardinality)
 	w.Flush()
 	return sb.String()
 }
@@ -623,15 +628,25 @@ func (jctx *JobSchedulingContext) IsSuccessful() bool {
 	return jctx.UnschedulableReason == ""
 }
 
-func JobSchedulingContextsFromJobs[J interfaces.LegacySchedulerJob](priorityClasses map[string]types.PriorityClass, jobs []J) []*JobSchedulingContext {
+func JobSchedulingContextsFromJobs[J interfaces.LegacySchedulerJob](priorityClasses map[string]types.PriorityClass, jobs []J, extractGangInfo func(map[string]string) (string, int, int, bool, error)) []*JobSchedulingContext {
 	jctxs := make([]*JobSchedulingContext, len(jobs))
 	timestamp := time.Now()
+
 	for i, job := range jobs {
+		// TODO: Move min cardinality to gang context only and remove from here.
+		// Requires re-phrasing nodedb in terms of gang context, as well as feeding the value extracted from the annotations downstream.
+		_, _, gangMinCardinality, _, err := extractGangInfo(job.GetAnnotations())
+		if err != nil {
+			gangMinCardinality = 1
+		}
+
 		jctxs[i] = &JobSchedulingContext{
-			Created:         timestamp,
-			JobId:           job.GetId(),
-			Job:             job,
-			PodRequirements: job.GetPodRequirements(priorityClasses),
+			Created:            timestamp,
+			JobId:              job.GetId(),
+			Job:                job,
+			PodRequirements:    job.GetPodRequirements(priorityClasses),
+			GangMinCardinality: gangMinCardinality,
+			ShouldFail:         false,
 		}
 	}
 	return jctxs

diff --git a/internal/scheduler/context/context_test.go b/internal/scheduler/context/context_test.go
@@ -89,8 +89,9 @@ func testNSmallCpuJobSchedulingContext(queue, priorityClassName string, n int) [
 func testSmallCpuJobSchedulingContext(queue, priorityClassName string) *JobSchedulingContext {
 	job := testfixtures.Test1Cpu4GiJob(queue, priorityClassName)
 	return &JobSchedulingContext{
-		JobId:           job.GetId(),
-		Job:             job,
-		PodRequirements: job.GetPodRequirements(testfixtures.TestPriorityClasses),
+		JobId:              job.GetId(),
+		Job:                job,
+		PodRequirements:    job.GetPodRequirements(testfixtures.TestPriorityClasses),
+		GangMinCardinality: 1,
 	}
 }
diff --git a/internal/scheduler/gang_scheduler.go b/internal/scheduler/gang_scheduler.go
@@ -38,11 +38,55 @@ func (sch *GangScheduler) SkipUnsuccessfulSchedulingKeyCheck() {
 	sch.skipUnsuccessfulSchedulingKeyCheck = true
 }
 
-func (sch *GangScheduler) Schedule(ctx *armadacontext.Context, gctx *schedulercontext.GangSchedulingContext) (ok bool, unschedulableReason string, err error) {
-	// Exit immediately if this is a new gang and we've exceeded any round limits.
+func (sch *GangScheduler) updateGangSchedulingContextOnFailure(gctx *schedulercontext.GangSchedulingContext, gangAddedToSchedulingContext bool, unschedulableReason string) (err error) {
+	if gangAddedToSchedulingContext {
+		failedJobs := util.Map(gctx.JobSchedulingContexts, func(jctx *schedulercontext.JobSchedulingContext) interfaces.LegacySchedulerJob { return jctx.Job })
+		if _, err = sch.schedulingContext.EvictGang(failedJobs); err != nil {
+			return
+		}
+	}
+
+	for _, jctx := range gctx.JobSchedulingContexts {
+		jctx.UnschedulableReason = unschedulableReason
+	}
+
+	if _, err = sch.schedulingContext.AddGangSchedulingContext(gctx); err != nil {
+		return
+	}
+
+	// Register unfeasible scheduling keys.
 	//
-	// Because this check occurs before adding the gctx to the sctx,
-	// the round limits can be exceeded by one gang.
+	// Only record unfeasible scheduling keys for single-job gangs.
+	// Since a gang may be unschedulable even if all its members are individually schedulable.
+	if !sch.skipUnsuccessfulSchedulingKeyCheck && gctx.Cardinality() == 1 {
+		jctx := gctx.JobSchedulingContexts[0]
+		schedulingKey := sch.schedulingContext.SchedulingKeyFromLegacySchedulerJob(jctx.Job)
+		if _, ok := sch.schedulingContext.UnfeasibleSchedulingKeys[schedulingKey]; !ok {
+			// Keep the first jctx for each unfeasible schedulingKey.
+			sch.schedulingContext.UnfeasibleSchedulingKeys[schedulingKey] = jctx
+		}
+	}
+
+	return
+}
+
+func (sch *GangScheduler) updateGangSchedulingContextOnSuccess(gctx *schedulercontext.GangSchedulingContext, gangAddedToSchedulingContext bool) (err error) {
+	if gangAddedToSchedulingContext {
+		jobs := util.Map(gctx.JobSchedulingContexts, func(jctx *schedulercontext.JobSchedulingContext) interfaces.LegacySchedulerJob { return jctx.Job })
+		if _, err = sch.schedulingContext.EvictGang(jobs); err != nil {
+			return
+		}
+	}
+
+	if _, err = sch.schedulingContext.AddGangSchedulingContext(gctx); err != nil {
+		return
+	}
+
+	return
+}
+
+func (sch *GangScheduler) Schedule(ctx *armadacontext.Context, gctx *schedulercontext.GangSchedulingContext) (ok bool, unschedulableReason string, err error) {
+	// Exit immediately if this is a new gang and we've hit any round limits.
 	if !gctx.AllJobsEvicted {
 		if ok, unschedulableReason, err = sch.constraints.CheckRoundConstraints(sch.schedulingContext, gctx.Queue); err != nil || !ok {
 			return
@@ -66,36 +110,15 @@ func (sch *GangScheduler) Schedule(ctx *armadacontext.Context, gctx *schedulerco
 			}
 		}
 
-		// Process unschedulable jobs.
-		if !ok {
-			// Register the job as unschedulable. If the job was added to the context, remove it first.
-			if gangAddedToSchedulingContext {
-				jobs := util.Map(gctx.JobSchedulingContexts, func(jctx *schedulercontext.JobSchedulingContext) interfaces.LegacySchedulerJob { return jctx.Job })
-				if _, err = sch.schedulingContext.EvictGang(jobs); err != nil {
-					return
-				}
-			}
-			for _, jctx := range gctx.JobSchedulingContexts {
-				jctx.UnschedulableReason = unschedulableReason
-			}
-			if _, err = sch.schedulingContext.AddGangSchedulingContext(gctx); err != nil {
-				return
-			}
-
-			// Register unfeasible scheduling keys.
-			//
-			// Only record unfeasible scheduling keys for single-job gangs.
-			// Since a gang may be unschedulable even if all its members are individually schedulable.
-			if !sch.skipUnsuccessfulSchedulingKeyCheck && gctx.Cardinality() == 1 {
-				jctx := gctx.JobSchedulingContexts[0]
-				schedulingKey := sch.schedulingContext.SchedulingKeyFromLegacySchedulerJob(jctx.Job)
-				if _, ok := sch.schedulingContext.UnfeasibleSchedulingKeys[schedulingKey]; !ok {
-					// Keep the first jctx for each unfeasible schedulingKey.
-					sch.schedulingContext.UnfeasibleSchedulingKeys[schedulingKey] = jctx
-				}
-			}
+		if ok {
+			err = sch.updateGangSchedulingContextOnSuccess(gctx, gangAddedToSchedulingContext)
+		} else {
+			err = sch.updateGangSchedulingContextOnFailure(gctx, gangAddedToSchedulingContext, unschedulableReason)
 		}
+
+		return
 	}()
+
 	if _, err = sch.schedulingContext.AddGangSchedulingContext(gctx); err != nil {
 		return
 	}
@@ -186,23 +209,38 @@ func (sch *GangScheduler) tryScheduleGang(ctx *armadacontext.Context, gctx *sche
 	return
 }
 
-func (sch *GangScheduler) tryScheduleGangWithTxn(ctx *armadacontext.Context, txn *memdb.Txn, gctx *schedulercontext.GangSchedulingContext) (ok bool, unschedulableReason string, err error) {
-	if ok, err = sch.nodeDb.ScheduleManyWithTxn(txn, gctx.JobSchedulingContexts); err != nil {
-		return
-	} else if !ok {
-		for _, jctx := range gctx.JobSchedulingContexts {
-			if jctx.PodSchedulingContext != nil {
-				// Clear any node bindings on failure to schedule.
-				jctx.PodSchedulingContext.NodeId = ""
+func clearNodeBindings(jctx *schedulercontext.JobSchedulingContext) {
+	if jctx.PodSchedulingContext != nil {
+		// Clear any node bindings on failure to schedule.
+		jctx.PodSchedulingContext.NodeId = ""
+	}
+}
+
+func (sch *GangScheduler) tryScheduleGangWithTxn(_ *armadacontext.Context, txn *memdb.Txn, gctx *schedulercontext.GangSchedulingContext) (ok bool, unschedulableReason string, err error) {
+	if ok, err = sch.nodeDb.ScheduleManyWithTxn(txn, gctx.JobSchedulingContexts); err == nil {
+		if !ok {
+			for _, jctx := range gctx.JobSchedulingContexts {
+				clearNodeBindings(jctx)
+			}
+
+			if gctx.Cardinality() > 1 {
+				unschedulableReason = "unable to schedule gang since minimum cardinality not met"
+			} else {
+				unschedulableReason = "job does not fit on any node"
 			}
-		}
-		if gctx.Cardinality() > 1 {
-			unschedulableReason = "at least one job in the gang does not fit on any node"
 		} else {
-			unschedulableReason = "job does not fit on any node"
+			// When a gang schedules successfully, update state for failed jobs if they exist.
+			for _, jctx := range gctx.JobSchedulingContexts {
+				if jctx.ShouldFail {
+					clearNodeBindings(jctx)
+					jctx.UnschedulableReason = "job does not fit on any node"
+				}
+			}
 		}
+
 		return
 	}
+
 	return
 }