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[exporter/clickhouseexporter] Support JSON type for logs and traces #40547

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Merged
merged 53 commits into from
Jun 27, 2025
Merged

[exporter/clickhouseexporter] Support JSON type for logs and traces #40547

merged 53 commits into from
Jun 27, 2025

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SpencerTorres
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@SpencerTorres SpencerTorres commented Jun 9, 2025 •
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Description

Depends on refactoring from #40536

Adds JSON support to the exporter.

Summary:

  • Added feature gate (clickhouse.json, alpha stability) for enabling the JSON type pipeline. The Map based pipeline is still functional and is the default. (How to use feature gates)
  • The JSON type replaces all Map columns with the new JSON type.
  • JSON is sent to the server as a string.
  • Due to how the server stores JSON paths, OTel standard paths such as a.b.c are returned as objects a { b { c } } by the server. This can be changed via server setting in the future to return all data as flattened paths a.b.c.

Let me know if you have any questions, suggestions, etc.

Thanks!

Testing

  • Added unit tests for related helper functions
  • Added integration tests for JSON logs/traces

Documentation

  • Updated README, changelog