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Backport of scaling: set Index on nil-job scale status reply into release/1.5.x #18647

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3 changes: 3 additions & 0 deletions .changelog/18637.txt
Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
```release-note:bug
scaling: Unblock blocking queries to /v1/job/{job-id}/scale if the job goes away
```
7 changes: 6 additions & 1 deletion nomad/job_endpoint.go
Original file line number Diff line number Diff line change
Expand Up @@ -2156,8 +2156,13 @@ func (j *Job) ScaleStatus(args *structs.JobScaleStatusRequest,
return err
}
if job == nil {
// HTTPServer.jobScaleStatus() will 404 if this is nil
reply.JobScaleStatus = nil
return nil

// reply with latest index, since if the job does get created,
// it must necessarily be later than current latest.
reply.Index, err = state.LatestIndex()
return err
}

events, eventsIndex, err := state.ScalingEventsByJob(ws, args.RequestNamespace(), args.JobID)
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