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NumberFieldView subscribe to user hub times out — same hub-cache routing failure as issue #1195 #1196
Description
What is failing
MeshWeaver.Blazor.Components.NumberFieldView fails to load the Order field in area Settings/2/2/2/1/5 for user sglauser. A SubscribeRequest sent via hub cache gmIIqhF220CKKxqxgY_J7Q gets no response within 60 seconds, producing System.TimeoutException.
Probable cause (high confidence)
This is not a new defect — it is the same downstream symptom already filed as issue #1195 (also a NumberFieldView timeout, same hub cache, same target user, same pod, same area path). The sibling incident covers 4 occurrences between 22:42 and 04:52; this incident is a 5th occurrence at 05:03 (same request id lineage 8wgRIzmUzUO7AhciaDLkFw). The root cause is a hub-cache/subscribe-routing failure: the target user hub's grain (sglauser) is either not activated, not reachable, or not responding to SubscribeRequest. The MessageHubGrain TimeoutException incident (issue #1186) documents the upstream mechanism — no query provider claims the target hub's partition.
Evidence:
- Same hub cache id (
gmIIqhF220CKKxqxgY_J7Q) across both incidents - Same target user (
sglauser), same pod (kmwvr), same settings area - Same exception message and 60-second timeout duration
- Timestamps form a continuous sequence (22:42 → 23:57 → 02:53 → 04:52 → 05:03)
Impact
Low. 1 additional occurrence, same pod, same user. The NumberFieldView for the Order setting fails to render during that window. No broader blast radius beyond user sglauser.
Where to look
- This is a duplicate of issue NumberFieldView subscribe to user hub times out — downstream of hub cache unavailability #1195 (same component, same cache). Close and let NumberFieldView subscribe to user hub times out — downstream of hub cache unavailability #1195 and MessageHubGrain activation frequently times out during initialization due to unresolvable mesh nodes #1186 track the root cause.
- Component code:
MeshWeaver.Blazor.Components.NumberFieldView— the subscribe call that surfaces the hub cache timeout. - Upstream: hub-cache subscribe routing —
MeshWeaver.Messaging.AccessContextCaptureExtensions.RestoringObserver<T>.OnError()atAccessContextCaptureExtensions.cs:174.
Evidence
| Fingerprint | b7b494536110682a |
| Category | MeshWeaver.Blazor.Components.NumberFieldView |
| Severity | Error |
| Exception | System.TimeoutException |
| Top frame | MeshWeaver.Messaging.AccessContextCaptureExtensions.RestoringObserver1.OnError(Exception error)` |
| Namespace | memex-cloud |
| Pods | memex-portal-deployment-59479dc7d9-kmwvr |
| Occurrences | 1 |
| First seen | 2026-08-11 05:03:54Z |
| Last seen | 2026-08-11 05:03:54Z |
Recent log lines
2026-08-11 05:03:54Z memex-portal-deployment-59479dc7d9-kmwvr fail: MeshWeaver.Blazor.Components.NumberFieldView[0]
Loading 'Order' in area 'Settings/2/2/2/1/5' in Area Settings/2/2/2/1/5
System.TimeoutException: No response received in hub cache/gmIIqhF220CKKxqxgY_J7Q within 00:01:00 for request SubscribeRequest (id=8wgRIzmUzUO7AhciaDLkFw) → target sglauser. The request may have been undeliverable or the target hub was not found.
at System.Reactive.PlatformServices.ExceptionServicesImpl.Rethrow(Exception exception)
at System.Reactive.ExceptionHelpers.Throw(Exception exception)
at System.Reactive.Stubs.<>c.<.cctor>b__2_1(Exception ex)
at System.Reactive.AnonymousSafeObserver`1.OnError(Exception error)
at System.Reactive.Sink`2.OnError(Exception error)
at System.Reactive.Sink`2.OnError(Exception error)
at System.Reactive.Sink`2.OnError(Exception error)
at System.Reactive.Sink`2.OnError(Exception error)
at System.Reactive.SafeObserver`1.WrappingSafeObserver.OnError(Exception error)
at System.Reactive.Sink`2.OnError(Exception error)
at MeshWeaver.Messaging.AccessContextCaptureExtensions.RestoringObserver`1.OnError(Exception error) in /home/runner/work/MeshWeaver/MeshWeaver/src/MeshWeaver.Messaging.Hub/AccessContextCaptureExtensions.cs:line 174
at System.Reactive.SafeObserver`1.WrappingSafeObserver.OnError(Exception error)
at System.Reactive.Linq.ObservableImpl.SelectMany`2.ObservableSelector._.InnerObserver.OnError(Exception error)
at System.Reactive.ObserverBase`1.OnError(Exception error)
at System.Reactive.SafeObserver`1.WrappingSafeObserver.OnError(Exception error)
at System.Reactive.Sink`2.OnError(Exception error)
at System.Reactive.Subjects.FastImmediateObserver`1.EnsureActive(Int32 count)
at System.Reactive.Subjects.ReplaySubject`1.ReplayBase.OnError(Exception error)
at MeshWeaver.Mesh.MeshNodeStreamHandle.TypedContentObserver.OnError(Exception…[truncated]
Opened automatically from Admin/_LogIncident/b7b494536110682a. Recurrences are folded into this issue rather than opening new ones.
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