scheduler: warn when system jobs cannot place an alloc #11111
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When a system or sysbatch job specify constraints that none of the
current nodes meet, report a warning to the user.
Also, for sysbatch job, mark the job as dead as a result.
A sample run would look like:
```
$ nomad job run ./example.nomad
==> 2021-08-31T16:57:35-04:00: Monitoring evaluation "b48e8882"
2021-08-31T16:57:35-04:00: Evaluation triggered by job "example"
==> 2021-08-31T16:57:36-04:00: Monitoring evaluation "b48e8882"
2021-08-31T16:57:36-04:00: Evaluation status changed: "pending" -> "complete"
==> 2021-08-31T16:57:36-04:00: Evaluation "b48e8882" finished with status "complete" but failed to place all allocations:
2021-08-31T16:57:36-04:00: Task Group "cache" (failed to place 1 allocation):
* Constraint "${meta.tag} = bar": 2 nodes excluded by filter
* Constraint "${attr.kernel.name} = linux": 1 nodes excluded by filter
$ nomad job status example
ID = example
Name = example
Submit Date = 2021-08-31T16:57:35-04:00
Type = sysbatch
Priority = 50
Datacenters = dc1
Namespace = default
Status = dead
Periodic = false
Parameterized = false
Summary
Task Group Queued Starting Running Failed Complete Lost
cache 0 0 0 0 0 0
Allocations
No allocations placed
```
notnoop
commented
Sep 2, 2021
lgfa29
approved these changes
Sep 2, 2021
|
@notnoop I pushed a changelog entry, but I'm not sure if it's good. Feel free to change it before merge. |
schmichael
requested changes
Sep 2, 2021
There was a problem hiding this comment.
@notnoop is out, so I'll try to move this forward! I'm not sure my comment is a blocker, but I'd like to check it out before merging.
schmichael
reviewed
Sep 2, 2021
Defensively deep copy AllocMetric to avoid side effects from shared map references.
While I don't think this fully encompasses the changes, other bits like marking sysbatch as dead immediately are new so haven't changed from a previous release.
schmichael
approved these changes
Sep 13, 2021
|
I'm going to lock this pull request because it has been closed for 120 days ⏳. This helps our maintainers find and focus on the active contributions. |
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When a system or sysbatch job specify constraints that none of the current nodes meet, report a warning to the user.
Also, for sysbatch job, mark the job as dead if no allocation is placed at all. System jobs behavior isn't affected by this.
A sample run would look like: