[exporter/elasticsearch] Emit _doc_count for metric documents in OTel mode when data point attribute _doc_count is true #35348
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| // documents is per-resource. Therefore, there is no need to hash resource attributes | ||
| hash := metricOTelHash(dp, scope.Attributes(), metric.Unit()) | ||
| hash := metricOTelHash(dp, scope.Attributes(), metric.Unit(), docCount) |
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Do we need docCount as a hashing key? Maybe we could add the doc counts for existing hashes and not consider docCount as a hashing key.
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Do we need docCount as a hashing key?
I think we'll need it. If 2 metrics with the same dimension have different doc counts, they cannot share the same document, as there is only 1 doc count in 1 document.
Maybe we could add the doc counts for existing hashes
Could you elaborate?
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If 2 metrics with the same dimension have different doc counts
Having a hard time imagining how this could practically happen. Doesn't this mean that we would drop the metric anyway since they are duplicates w.r.t dimensions?
Maybe we could add the doc counts for existing hashes
I was thinking that if all attributes are same then merging them would be the way to go (merging histograms + doc count values) but honestly, I can't imagine a case when this could happen in practical scenarios.
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Doesn't this mean that we would drop the metric anyway since they are duplicates w.r.t dimensions?
Good point, that appears to be the case for TSDB. @felixbarny did mention something about hashing doc count, not sure if this case was considered.
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Because of that issue, I think it would be easier to map metrics named _doc_count to the top-level _doc_count field. We don't need a _doc_count for all metrics, and it makes it harder to group as many metrics to the same document as possible, because these metrics may differ just by their _doc_count.
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With the new implementation that is based on the _doc_count: true attribute, I'm also wondering whether we can remove the doc count from the hash. If there are multiple doc counts for a given doc, I think it's fine to chose one of them (for example the first, last, or max value).
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Right, I forgot to make that change.
carsonip
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_doc_count for metric documents in OTel mode when _doc_count is true
carsonip
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_doc_count for metric documents in OTel mode when _doc_count is true_doc_count for metric documents in OTel mode conditionally
carsonip
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_doc_count for metric documents in OTel mode conditionally
…ute handling for data points in OTel mapping mode (#35479) **Description:** <Describe what has changed.> <!--Ex. Fixing a bug - Describe the bug and how this fixes the issue. Ex. Adding a feature - Explain what this achieves.--> Supersedes #35348 elasticsearch.mapping.hints takes a slice of strings. `_doc_count` enables emitting `_doc_count` for the document. `aggregate_metric_double` causes histogram or exponential histogram to be emitted as aggregate_metric_double. **Link to tracking Issue:** <Issue number if applicable> **Testing:** <Describe what testing was performed and which tests were added.> **Documentation:** <Describe the documentation added.>
… mode when data point attribute _doc_count is true (open-telemetry#35348) **Description:** <Describe what has changed.> <!--Ex. Fixing a bug - Describe the bug and how this fixes the issue. Ex. Adding a feature - Explain what this achieves.--> Emit _doc_count for metric documents in OTel mode when data point attribute _doc_count is true **Link to tracking Issue:** <Issue number if applicable> **Testing:** <Describe what testing was performed and which tests were added.> **Documentation:** <Describe the documentation added.>
…ute handling for data points in OTel mapping mode (open-telemetry#35479) **Description:** <Describe what has changed.> <!--Ex. Fixing a bug - Describe the bug and how this fixes the issue. Ex. Adding a feature - Explain what this achieves.--> Supersedes open-telemetry#35348 elasticsearch.mapping.hints takes a slice of strings. `_doc_count` enables emitting `_doc_count` for the document. `aggregate_metric_double` causes histogram or exponential histogram to be emitted as aggregate_metric_double. **Link to tracking Issue:** <Issue number if applicable> **Testing:** <Describe what testing was performed and which tests were added.> **Documentation:** <Describe the documentation added.>
Description:
Emit _doc_count for metric documents in OTel mode when data point attribute _doc_count is true
Link to tracking Issue:
Testing:
Documentation: