Mastra•3mo ago

mastra is not retrieving `waitForEvent` workflow snapshots

I have following scenario:

Workflow is paused with
```
waitForEvent
```
```
waitForEvent
```
; a new record appears in DB table
```
mastra_workflow_snapshot
```
mastra_workflow_snapshot
```
mastra_workflow_snapshot
```
mastra_workflow_snapshot
, that is good.
then I restart mastra server and send
```
sendEvent
```
sendEvent
```
sendEvent
```
sendEvent
with the runId from that record. But receive error: "Workflow run not found".

Should I somehow manually retrieve the snapshots?

Mastra Triager•10/2/25, 12:05 PM

Created GitHub issue: https://github.com/mastra-ai/mastra/issues/8400

GitHub

[DISCORD:1423108982809296907] mastra is not retrieving `waitForEven...

This issue was created from Discord post: https://discord.com/channels/1309558646228779139/1423108982809296907 I have following scenario: Workflow is paused with waitForEvent ; a new record appears...

Taofeeq•10/7/25, 12:11 PM

@dashan108
Sorry it took a while to get to this.

How did you use

sendEvent

sendEvent

?
Did you use client-js? I'm assuming you did since you mentioned restarting the server

Taofeeq•10/7/25, 12:58 PM

Also, once you stop the server, you can't resume the workflow using sendEvent, the eventevent in

waitForEvent

waitForEvent

can't be triggered because it lost the run.
It's meant for scenarios where you the server doesn't end, fast paced scenarios
For your case, I think you should use suspend/resume.

We'll consider if we should change the api to make waitForEvent and suspend/resume work more similarly

Taofeeq•10/7/25, 12:58 PM

cc @Abhi Aiyer

TTaofeeq Also, once you stop the server, you can't resume the workflow using sendEvent, t...

dashan108OP•10/24/25, 2:21 PM

so,

waitForEvent

waitForEvent

will not work in serverless environments?

mastra is not retrieving `waitForEvent` workflow snapshots

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