Temporal .NET SDK and Worker Versioning

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1

So I wanted to learn how Worker versioning work when using Temporal .NET SDK.

In order to achieve this I forked money-transfer-project-template-dotnet into public repository: money-transfer-project-template-versioned-dotnet

As far as I tried to follow Worker Versioning from docs I can’t force this to work either in Pinned or AutoUpgrade default versioning behavior.

Zrzut ekranu 2026-01-14 210801
Zrzut ekranu 2026-01-14 2108011840×906 56.7 KB

When I run my client workflow is being added to the server but that’s it - as I can see there aren’t any version information connected to mine workflow.

I could see that there is 1 worker with buildId I defined visible in the UI under Workers

ID Build ID Last Accessed Workflow Task Handler Activity Handler
19960@MWITEK 1.0 2026-01-14 UTC 20:21:16.35 :check_mark: :check_mark:

But It doesn’t want to take this job.

I’m only seeing thise two events:

And nothing more.

Event 1:

{
  "eventId": "1",
  "eventTime": "2026-01-14T20:07:10.098908732Z",
  "eventType": "WorkflowExecutionStarted",
  "taskId": "1048576",
  "workflowExecutionStartedEventAttributes": {
    "workflowType": {
      "name": "MoneyTransferWorkflow"
    },
    "taskQueue": {
      "name": "MONEY_TRANSFER_TASK_QUEUE",
      "kind": "TASK_QUEUE_KIND_NORMAL"
    },
    "input": {
      "payloads": [
        {
          "SourceAccount": "85-150",
          "TargetAccount": "43-812",
          "Amount": 400,
          "ReferenceId": "12345"
        }
      ]
    },
    "workflowTaskTimeout": "10s",
    "originalExecutionRunId": "019bbe1e-8612-7dda-bdd5-ad70f5dab669",
    "identity": "5156@MWITEK",
    "firstExecutionRunId": "019bbe1e-8612-7dda-bdd5-ad70f5dab669",
    "attempt": 1,
    "firstWorkflowTaskBackoff": "0s",
    "workflowId": "pay-invoice-ee9358f7-6f6c-4ec7-b6db-d9053a27d21a"
  },
  "links": []
}

Event 2:

{
  "eventId": "2",
  "eventTime": "2026-01-14T20:07:10.098961773Z",
  "eventType": "WorkflowTaskScheduled",
  "taskId": "1048577",
  "workflowTaskScheduledEventAttributes": {
    "taskQueue": {
      "name": "MONEY_TRANSFER_TASK_QUEUE",
      "kind": "TASK_QUEUE_KIND_NORMAL"
    },
    "startToCloseTimeout": "10s",
    "attempt": 1
  },
  "links": []
}

I might suspect that there also should be some kind of change made to the Workflow definition or Client call so I want to ask you all for help and to point me what I’m doing wrong.

Kind Regards

2

Versioned workers won’t receive any tasks until you promote the version. Have you called


temporal worker deployment set-current-version \
    --deployment-name "YourDeploymentName" \
    --build-id "YourBuildID"

on that version as described here?

3

Yes, thank you for your ansfer.
Before rechecking forum I re-read the docs - looks’s like I missed a rolling-out-changes-with-the-cli

Seems like something that might be automated by sdk maybe, or there might be some kind of auto execution of this already.

long story short - It works now, I will add shell scripts to my repo for maybe future developers that might have same issue.

1 Like
4

GitHub - temporalio/temporal-worker-controller is a tool that the versioning crew is working on to automate those rollout API calls if you want to take a look there. Do you run your workers in kubernetes or in some other way?