feat(filebeat/cel): Allow OTLP explicit bucket histograms via env var#48731
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feat(filebeat/cel): Allow OTLP explicit bucket histograms via env var#48731andrewkroh merged 3 commits intoelastic:mainfrom
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Currently, the CEL input forces OTLP exponential histograms, which are not supported by all backends (e.g., APM Server). This change allows users to configure the histogram aggregation using the OTEL_EXPORTER_OTLP_METRICS_DEFAULT_HISTOGRAM_AGGREGATION environment variable. Setting this to "explicit_bucket_histogram" will disable the forced exponential histogram view, allowing the SDK to use explicit bucket histograms. Closes elastic#48730 Testing: Set the following environment variables when running Filebeat with a CEL input: OTEL_METRICS_EXPORTER=console OTEL_EXPORTER_OTLP_METRICS_DEFAULT_HISTOGRAM_AGGREGATION=explicit_bucket_histogram Verify that the output histograms use explicit buckets (look for "BucketCounts" and "ExplicitBounds") instead of exponential buckets ("Scale", "PositiveBucket").
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Is there somewhere that we can put user-facing documentation for this?
Co-authored-by: Dan Kortschak <dan.kortschak@elastic.co>
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I've documented the usage of the env var in the doc.go where the otel metrics are described. |
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…#48731) Currently, the CEL input forces OTLP exponential histograms, which are not supported by all backends (e.g., APM Server). This change allows users to configure the histogram aggregation using the OTEL_EXPORTER_OTLP_METRICS_DEFAULT_HISTOGRAM_AGGREGATION environment variable. Setting this to "explicit_bucket_histogram" will disable the forced exponential histogram view, allowing the SDK to use explicit bucket histograms. Closes #48730 (cherry picked from commit 648345c)
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…#48731) (#48753) Currently, the CEL input forces OTLP exponential histograms, which are not supported by all backends (e.g., APM Server). This change allows users to configure the histogram aggregation using the OTEL_EXPORTER_OTLP_METRICS_DEFAULT_HISTOGRAM_AGGREGATION environment variable. Setting this to "explicit_bucket_histogram" will disable the forced exponential histogram view, allowing the SDK to use explicit bucket histograms. Closes #48730 (cherry picked from commit 648345c) Co-authored-by: Andrew Kroh <andrew.kroh@elastic.co>
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stresstest.shscript to run them under stress conditions and race detector to verify their stability../changelog/fragmentsusing the changelog tool.How to test this PR locally
Set the following environment variables when running Filebeat with a CEL input:
Verify that the output histograms use explicit buckets (look for "BucketCounts" and "ExplicitBounds") instead of exponential buckets ("Scale", "PositiveBucket").
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Use cases
To be able to route histograms through APM server until such time we can migrate to mOTLP.
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