Signal Handling Problems

Pain pointTrend: NewConfidence: LowFirst seen 7/29/2026 · last seen 7/29/2026

Opportunity score

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What's happening

Users are facing challenges with sending signals to workflows, including issues with invalid data formats and failures in signal processing. This complicates the interaction between workflows and external systems.

Why this score: The recurring nature of signal handling issues suggests a need for better support and documentation around this feature.

Who's affected

developers using Temporal for workflow orchestrationteams integrating external systems with Temporal workflows

What people try to do

Trying to send signals with different data formats
Debugging signal processing errors in workflows

Why current solutions fail

Invalid data formats lead to signal processing failures.
Lack of clear guidance on how to properly send signals.

What to build

Develop a validation tool for signal data formats before sending.
Create comprehensive documentation and examples for signal handling in workflows.
Implement a logging mechanism to capture and analyze signal processing errors.

Evidence

Issue sending []byte to a temporal workflow

“Hello, I am looking for some help on how to send data to my workflow. I am trying to send it over a signal with the go sdk and I am getting this error from my activity: "message": "failed to process event: proto: cannot parse invalid wire-format data" This is the code for signaling it: signal := ...”

temporal-community · Maria_Sitkovets · 2/20/2025

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Signal to scheduled workflow

“Yes, here is the relevant issue: https://github.com/temporalio/temporal/issues/1310 Temporal sends queries to workflows which are created but not started · Issue #1310 · temporalio/temporal · GitHub”

temporal-community · maxim · 4/23/2021

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