is there any timeline on when presto will start supporting t-digest for other data types like bigint

[Aashima89]

A T-digest is a data sketch which stores approximate percentile information. The Presto type for this data structure is called tdigest, and it accepts a parameter of type double which represents the set of numbers to be ingested by the tdigest. Other numeric types may be added in a future release.

https://prestodb.io/docs/current/functions/tdigest.html