# Trace similarity systems on top of ClickHouse to analyze crash stack traces from our CI

DevFeed: [Trace similarity systems on top of ClickHouse to analyze crash stack traces from our CI](<https://devfeed.tech/articles/trace-similarity-systems-on-top-of-clickhouse-to-analyze-crash-stack-traces-from-our-ci-5607.md>)

Original publisher: [Read original article](<https://clickhouse.com/blog/trace-similarity-stack-traces>)

Author: Misha Shiryaev

Published: 2025-09-24T12:46:35Z

Content type: article

Language: en

Sources: [ClickHouse Blog](<https://devfeed.tech/sources/clickhouse-blog.md>)

Topics: [clickhouse](<https://devfeed.tech/topics/clickhouse.md>), [ci](<https://devfeed.tech/topics/ci.md>), [Traces](<https://devfeed.tech/topics/traces.md>), [issue tracker](<https://devfeed.tech/topics/issue-tracker.md>), [Fuzzing/Fuzz testing](<https://devfeed.tech/topics/fuzzing.md>), [FIRST](<https://devfeed.tech/topics/first.md>)

Tags: [ci](<https://devfeed.tech/tags/ci.md>), [clickhouse](<https://devfeed.tech/tags/clickhouse.md>), [crash-reporting](<https://devfeed.tech/tags/crash-reporting.md>), [fuzzing](<https://devfeed.tech/tags/fuzzing.md>), [github](<https://devfeed.tech/tags/github.md>), [issue-tracker](<https://devfeed.tech/tags/issue-tracker.md>), [logs](<https://devfeed.tech/tags/logs.md>), [trace](<https://devfeed.tech/tags/trace.md>)

## AI overview

This article explains how to build a trace similarity system on top of ClickHouse to analyze crash stack traces from CI. It describes collecting crash reports, extracting stack frames, grouping similar traces, and creating or updating GitHub issues so teams can distinguish new bugs from known ones.

## Source excerpt

Learn how our engineering team cut through noisy CI crash reports with a trace similarity system built on ClickHouse.