fix: make sure TestMetrics
doesn't remove state
#164
Merged
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This PR fixes a number of issues with our current
DebuggingRecorder
implementation. We now take a snapshot separately from querying the values. This fixes an issue inresistance::stress_test
where we had two sequentialconstruct_histogram
queries; the initial one would erase state after its use, leading to nil data in our subsequent query. Now that state is handled separately, we also get a minor boost to performance.