Jaeger v2.19.0 Release Overview

Tool: Jaeger by Jaeger Type: Minor Update Date: 2026-06-03 Category: DevOps

Key Changes

Jaeger v2.19.0 brings significant enhancements focused on API functionality and storage. The most notable addition is the new lightweight trace search capability, designed to improve performance and user experience.

New Features

The primary new feature is the introduction of the /api/v3/trace-summaries endpoint and its corresponding findtracesummaries gRPC handler. This allows for quicker, less resource-intensive trace searches by providing lightweight summaries instead of full trace data. Additionally, ClickHouse storage now supports TLS configuration, enhancing security for distributed tracing setups.

Fixes & Improvements

APIv3 received several crucial fixes and usability improvements:

  • Query Filtering: Support for query.attributes filter in get /api/v3/traces is now available.
  • Parameter Handling: APIv3 now accepts camelCase HTTP query parameters, while retaining snake_case as deprecated aliases for backward compatibility. The query.num_traces parameter has been renamed to query.search_depth, also with a deprecated alias.
  • Trace ID Casing: Fixes ensure correct trace ID casing in API responses.
  • Storage: Elasticsearch index templates now include missing scope and link fields, improving data integrity and search capabilities.

Experimental Features

Ongoing experimental work includes the ag-ui endpoint and native trace summary computation within querysvc, signaling future performance optimizations and UI advancements.

For full details, refer to the official Jaeger v2.19.0 release notes on GitHub.

Impact for QA Teams

QA engineers can expect faster trace analysis for troubleshooting and debugging, especially with the new summary API. API test automation will benefit from improved APIv3 consistency and filtering capabilities. Enhanced storage options provide more control over test environment configurations, contributing to more reliable testing.