Fix flaky TestDistributorQuerier_QueryIngestersWithinBoundary#7419
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CharlieTLe wants to merge 1 commit intocortexproject:masterfrom
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Fix flaky TestDistributorQuerier_QueryIngestersWithinBoundary#7419CharlieTLe wants to merge 1 commit intocortexproject:masterfrom
CharlieTLe wants to merge 1 commit intocortexproject:masterfrom
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…cting clock The test was flaky because it captured `time.Now()` at setup, but `distributorQuerier.Select()` called `time.Now()` again internally. On slow CI runners, the clock drift could exceed the 10-second margin in the "maxT well after lookback boundary" subtest, causing the query to short-circuit with an empty result. Inject a `nowFn` function into `distributorQuerier` (defaulting to `time.Now`) so tests can freeze time. Replace the `InDelta` assertion with an exact `Equal` now that the clock is deterministic. Closes cortexproject#7415 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> Signed-off-by: Charlie Le <charlie_le@apple.com>
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Summary
nowFn func() time.TimeintodistributorQuerierso tests can control the clock, fixing the wall-clock race condition that caused flakiness on slow ARM CI runnersassert.InDeltawith exactassert.Equalnow that the clock is deterministic in teststime.Nowin production (passnilfornowFn)Closes #7415
Test plan
go test -count=100 -run TestDistributorQuerier_QueryIngestersWithinBoundary ./pkg/querier/...passes all 100 iterationsgo test ./pkg/querier/...suite passes with no regressions🤖 Generated with Claude Code