[SVLS-8217] feat(trace-stats): Allow custom buffer length #1424
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What does this PR do?
Right now buffer length is hard coded to 2. This PR allows (and requires) a custom buffer length to be set.
Motivation
When we use this stats concentrator in Lambda extension, we see undercount of 2–5% for
hitsmetric for high volume scenarios. When we changed buffer length from 2 to 1, undercount improved a lot, to 0.1–0.7%. While we are still investigating the cause of undercount, we want to be able to set custom buffer length to remediate the issue to some extent.Additional Notes
Let me know if you prefer to keep the current API and create a new API with the added param.
How to test the change?
Still passing the existing tests.