out_azure_kusto: OTEL logs not showing up correctly with in_opentelemetry plugin

[dceravigupta]

I'm trying to send my application OTEL logs using fluent-bit to an Azure Kusto database but seems like each OTEL logs is getting split into multiple logs rows when it finally getting ingested into kusto.

I'm noticing this behavior with other output plugins as well like stdout. For example -

[62] v1_logs: [[-1.000000000, {"schema"=>"otlp", "resource_id"=>0, "scope_id"=>11}], {"resource"=>{"attributes"=>{"telemetry.sdk.name"=>"opentelemetry", "telemetry.sdk.language"=>"dotnet", "telemetry.sdk.version"=>"1.8.1", "service.name"=>"unknown_service:dotnet"}}, "schema_url"=>"", "scope"=>{"name"=>"Microsoft.Extensions.HttpClient.Logging.Internal.HttpLoggingHandler"}}]
[63] v1_logs: [[1741372257.966227535, {"otlp"=>{"observed_timestamp"=>1741372257825108400, "timestamp"=>1741372257825108400, "severity_number"=>17, "severity_text"=>"Error", "attributes"=>{"resolved_host"=>"<some url>.com", "httpMethod"=>"GET", "httpHost"=>"<removed>", "httpPath"=>"<removed>", "duration"=>274, "{OriginalFormat}"=>"{httpMethod} {httpHost}/{httpPath}", "httpStatusCode"=>401}, "trace_flags"=>0}}], {"message"=>"GET <removed>"}]
[64] v1_logs: [[-2.000000000, {}], {}]

[dceravigupta]

@edsiper wondering is it similar to #10002 which you are tracking? And is the plan to take care for it all the output plugins?