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fix(core): ignore labels with empty value #579

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@gjasny gjasny commented Apr 6, 2022

The Data Model spec states:

A label with an empty label value is considered
equivalent to a label that does not exist.

@gjasny gjasny marked this pull request as draft April 6, 2022 21:00
The Data Model spec states:
> A label with an empty label value is considered
> equivalent to a label that does not exist.
@gjasny gjasny changed the title fix(core): Ignore labels with empty value fix(core): ignore labels with empty value Apr 6, 2022
@BenjaminW3
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BenjaminW3 commented Feb 24, 2023

Conceptually this looks good to me.

I am not sure about the performance impact. In our codebase we have some places where we dynamically do family.Add({{"key", value}}).Increment(); on each observation. This would now end up with an additional copy of the labels. Compared to the map lookup that this produces, the copy likely is not relevant.

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