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Summary
We've had a couple cases where there have been spikes of 400s. When this happens, and the 400s are coming from the model pod, we don't have any real means of understanding what happened. In this PR, we add some logging when we return BadRequest exceptions from Truss, so that we can understand the errors on the pod better.
Testing
Deployed a model locally, and curled it with malformed json. Got this: