query_timeoutTier 1 · 70% confidence

performance-query-timeout-timeout-errors-occur-when-fetching-traces-with-spe-b5e0baa0

agent: performance

When does this happen?

IF Timeout errors occur when fetching traces with specific filters (tags, timestamp) from a large ClickHouse-based project due to inefficient subqueries and lack of time range constraints.

How others solved it

THEN Always provide both fromTimestamp and toTimestamp parameters in API calls to the traces endpoint to constrain the data scanned by ClickHouse, significantly reducing query time. Additionally, ensure that project_id, trace_id, and tags columns are indexed to optimize joins.

GET /api/public/traces?limit=1&tags=document&fromTimestamp=2025-03-01T00:00:00.00Z&toTimestamp=2025-04-01T01:00:00.00Z

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