[pkg/otlp] Fix cumulative histogram handling in distributions mode #9623
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mx-psi
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mx-psi
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Oct 22, 2021
KSerrania
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…9623) Backport of open-telemetry/opentelemetry-collector-contrib#5867 to the `pkg/otlp` package. Fixes an issue in `mapHistogramMetrics` where the `delta` boolean wouldn't be passed to `getSketchBuckets` when the histograms mode is set to distributions. Fixes an issue in `getSketchBuckets` where buckets were not tagged by bounds when getting and setting values in the points cache (in the cumulative histogram case). This led to all buckets of an histogram sharing the same cache key, making the resulting sketch wrong. Fixes the `TestNaNMetrics` histogram case, which was missing its `ExplicitBounds` definition. Adds missing unit tests for the distributions mode.
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KSerrania
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…9623) (#9624) Backport of #9623 to the `7.32.x` branch. Fixes an issue in `mapHistogramMetrics` where the `delta` boolean wouldn't be passed to `getSketchBuckets` when the histograms mode is set to distributions. Fixes an issue in `getSketchBuckets` where buckets were not tagged by bounds when getting and setting values in the points cache (in the cumulative histogram case). This led to all buckets of an histogram sharing the same cache key, making the resulting sketch wrong. Fixes the `TestNaNMetrics` histogram case, which was missing its `ExplicitBounds` definition. Adds missing unit tests for the distributions mode.
zandrewitte
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…ataDog#9623) Backport of open-telemetry/opentelemetry-collector-contrib#5867 to the `pkg/otlp` package. Fixes an issue in `mapHistogramMetrics` where the `delta` boolean wouldn't be passed to `getSketchBuckets` when the histograms mode is set to distributions. Fixes an issue in `getSketchBuckets` where buckets were not tagged by bounds when getting and setting values in the points cache (in the cumulative histogram case). This led to all buckets of an histogram sharing the same cache key, making the resulting sketch wrong. Fixes the `TestNaNMetrics` histogram case, which was missing its `ExplicitBounds` definition. Adds missing unit tests for the distributions mode.
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What does this PR do?
Backport of open-telemetry/opentelemetry-collector-contrib#5867 to the
pkg/otlppackage.Fixes an issue in
mapHistogramMetricswhere thedeltaboolean wouldn't be passed togetSketchBucketswhen the histograms mode is set to distributions.Fixes an issue in
getSketchBucketswhere buckets were not tagged by bounds when getting and setting values in the points cache (in the cumulative histogram case). This led to all buckets of an histogram sharing the same cache key, making the resulting sketch wrong.Fixes the
TestNaNMetricshistogram case, which was missing itsExplicitBoundsdefinition.Adds missing unit tests for the distributions mode.
Checklist
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