Improve validation metrics for discarded samples and exemplars #6218
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Signed-off-by: Ben Ye <benye@amazon.com>
friedrichg
approved these changes
Sep 18, 2024
CharlieTLe
reviewed
Sep 18, 2024
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Should we create a new metric for discarded histograms? Perhaps add a new label to this metric called type like we do in
cortex/pkg/distributor/distributor.go
Line 636 in c6048fa
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@CharlieTLe I think we can add that but it will be a big change. Probably all the DiscardedSamples code we need to separate float and native histogram samples. We can create a separate issue to discuss and track that. |
Signed-off-by: Ben Ye <benye@amazon.com>
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@friedrichg Updated unit tests |
CharlieTLe
reviewed
Sep 19, 2024
pkg/distributor/distributor_test.go
Outdated
| require.Equal(t, testutil.ToFloat64(ds[0].validateMetrics.DiscardedSamples.WithLabelValues(validation.DroppedByRelabelConfiguration, id)), float64(1)) | ||
| require.Equal(t, testutil.ToFloat64(ds[0].validateMetrics.DiscardedExemplars.WithLabelValues(validation.DroppedByRelabelConfiguration, id)), float64(2)) | ||
| require.Equal(t, testutil.ToFloat64(ds[0].receivedSamples.WithLabelValues(id, "float")), float64(1)) | ||
| require.Equal(t, testutil.ToFloat64(ds[0].receivedSamples.WithLabelValues(id, "histogram")), float64(0)) |
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Should we test ingesting a native histogram and see it be discarded?
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Updated in latest commit
Signed-off-by: Ben Ye <benye@amazon.com>
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What this PR does:
In Distributor's validation logic, we currently update
DiscardedSamplesmetric when there is no label.However, it doesn't count native histogram samples, only normal samples. It doesn't track discarded exemplars or track it in a wrong way https://github.com/cortexproject/cortex/blob/master/pkg/distributor/distributor.go#L898
Which issue(s) this PR fixes:
Fixes #
Checklist
CHANGELOG.mdupdated - the order of entries should be[CHANGE],[FEATURE],[ENHANCEMENT],[BUGFIX]