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Some notes re:js udfs, it would be good to see the maximum improvement we can get from replacing the js udfs before committing too much time into it. One quick way is to just replace the udfs with stub udfs that do very little and see how much slot time reduces.
From a quick look at mozfun.glam, the js udfs are:
histogram_cast_json
histogram_generate_exponential_buckets
histogram_generate_functional_buckets
histogram_generate_linear_buckets
histogram_generate_scalar_buckets
percentile
Looking at where these are used, I wouldn't expect a huge improvement from replacing these but I think it's low-effort enough to try.
Following @BenWu 's improvement to
events_stream
's queries in mozilla/bigquery-etl#5659 we should see if we can:The text was updated successfully, but these errors were encountered: