Allow multiple exemplars on counters and histograms#2838
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dashpole wants to merge 3 commits intoprometheus:mainfrom
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Allow multiple exemplars on counters and histograms#2838dashpole wants to merge 3 commits intoprometheus:mainfrom
dashpole wants to merge 3 commits intoprometheus:mainfrom
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bwplotka
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krajorama
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Please update the ABNF (I can help)
dashpole
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Feb 18, 2026
Signed-off-by: David Ashpole <dashpole@google.com>
Signed-off-by: David Ashpole <dashpole@google.com>
Signed-off-by: David Ashpole <dashpole@google.com>
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Fixes prometheus/OpenMetrics#311
Remove the restriction on having a single exemplar on counters. This matches PRW 2.0, OpenTelemetry, and makes exemplars more consistent between types.
While reading through exemplar language, I noticed the MUST requirement for histogram-bucket-aligned exemplars on fixed-bucket histograms. This relaxes (to SHOULD) the alignment of exemplars with histogram buckets. This is done because: