SigNoz scanned 36,000 rows and told me "No Data"
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I spent an hour convinced my instrumentation was broken. It wasn't. The telemetry was arriving, ClickHouse was reading it, and every dashboard panel still said No Data — over a table that had 36,291 rows in it. That was one of eight bugs I hit last week building OpenTelemetry instrumentation for real-time voice agents. Not one of them threw an exception. Not one showed up in a log. Six of them I found after the code was already "working." This post is the list, with the commands I used to find…
1Key Takeaways
- I spent an hour convinced my instrumentation was broken.
- The telemetry was arriving, ClickHouse was reading it, and every dashboard panel still said No Data — over a table that had 36,291 rows in it.
- That was one of eight bugs I hit last week building OpenTelemetry instrumentation for real-time voice agents.
- Six of them I found after the code was already "working." This post is the list, with the commands I used to find….
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3Why it matters
Coding AI shifts how fast software ships and how much human review each change needs. DEV — AI reports that i spent an hour convinced my instrumentation was broken.
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