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Jaeger

v2.15.0Observability
Feb 6, 2026

CHECK 1OTHER 16

Jaeger v2.15.0 introduces a breaking constraint for trace and metric storage configuration. It also adds experimental MCP and ClickHouse capabilities, corrects API behavior, and includes an internal implementation change without direct operator impact.

Check if affected (1)

  • breakingTrace and metric storage configuration backend constraint

    Applies if you configure trace or metric storage with more than one backend type.

    Jaeger v2.15.0 restricts trace and metric storage configurations to exactly one backend type.

All 16 other recorded changesadditions 9 · fixes 5 · value changes 2

additions (9)

  • * Issue #7811: added grafana dashboard for metrics exporter ([@Anmol202005](https://github.com/Anmol202005) in [#7903](https://github.com/jaegertracing/jaeger/pull/7903))
  • * [clickhouse] add materialized view for event attribute metadata ([@mahadzaryab1](https://github.com/mahadzaryab1) in [#7923](https://github.com/jaegertracing/jaeger/pull/7923))
  • * [mcp] add get_span_names tool for discovering span names ([@sajal004004](https://github.com/sajal004004) in [#7909](https://github.com/jaegertracing/jaeger/pull/7909))
  • * [mcp] implement get_critical_path tool (phase 3 steps 8-9) ([@Copilot](https://github.com/apps/copilot-swe-agent) in [#7857](https://github.com/jaegertracing/jaeger/pull/7857))
  • * [mcp] get_services tool for service discovery ([@Copilot](https://github.com/apps/copilot-swe-agent) in [#7864](https://github.com/jaegertracing/jaeger/pull/7864))
  • * [mcp] add cors setting and fix null array errors ([@yurishkuro](https://github.com/yurishkuro) in [#7863](https://github.com/jaegertracing/jaeger/pull/7863))
  • * [mcp] get_trace_topology tool (phase 3 step 7) ([@Copilot](https://github.com/apps/copilot-swe-agent) in [#7862](https://github.com/jaegertracing/jaeger/pull/7862))
  • * [mcp] phase 2 step 3: storage integration ([@Copilot](https://github.com/apps/copilot-swe-agent) in [#7849](https://github.com/jaegertracing/jaeger/pull/7849))
  • * Mcp server/phase 1.2: sdk integration with streamable http transport ([@Copilot](https://github.com/apps/copilot-swe-agent) in [#7846](https://github.com/jaegertracing/jaeger/pull/7846))

fixes (5)

  • * [fix] return empty array instead of nil from api/v3/services ([@dee077](https://github.com/dee077) in [#7926](https://github.com/jaegertracing/jaeger/pull/7926))
  • * [fix] return empty array instead of nil from queryservice.getservices ([@sujalshah-bit](https://github.com/sujalshah-bit) in [#7925](https://github.com/jaegertracing/jaeger/pull/7925))
  • * [fix] always return empty services list when none exist ([@Sudhanshu-NITR](https://github.com/Sudhanshu-NITR) in [#7929](https://github.com/jaegertracing/jaeger/pull/7929))
  • * [fix] ensure badger maintenance is stopped before existing close() ([@Yashika0724](https://github.com/Yashika0724) in [#7940](https://github.com/jaegertracing/jaeger/pull/7940))
  • * [mcp] add cors setting and fix null array errors ([@yurishkuro](https://github.com/yurishkuro) in [#7863](https://github.com/jaegertracing/jaeger/pull/7863))

value changes (2)

  • * [clickhouse] rework clickhouse attributes to look up type for string attributes ([@mahadzaryab1](https://github.com/mahadzaryab1) in [#7815](https://github.com/jaegertracing/jaeger/pull/7815))
  • * Use opentelemetry span_name terminology in jaegermcp extension ([@Copilot](https://github.com/apps/copilot-swe-agent) in [#7916](https://github.com/jaegertracing/jaeger/pull/7916))
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