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Fix prometheus metric panic when using additional labels #451
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TL;DR
This PR pulls the fix from flytestdlib. The issue is that Golangs
append
implementation may modify the underlying array. So when we use this to compute metric labels, we have the ability to corrupt the underlying array meaning other metrics will fail.Type
Are all requirements met?
Complete description
^^^
Tracking Issue
flyteorg/flyte#2597
Follow-up issue
NA