domodwyer commented on issue #3140: URL: https://github.com/apache/arrow-datafusion/issues/3140#issuecomment-1217753548
I wonder if this is something to do with serialisation/deserialisation of the `TDigest` state: https://github.com/apache/arrow-datafusion/blob/929eb6d860fb60ba994b24397ad3c3eb7d839cdf/datafusion/physical-expr/src/aggregate/tdigest.rs#L577-L670 This is used when merging batches (`Accumulator::merge_batch`): https://github.com/apache/arrow-datafusion/blob/929eb6d860fb60ba994b24397ad3c3eb7d839cdf/datafusion/physical-expr/src/aggregate/approx_percentile_cont.rs#L410 I know some changes were made to the `approx_percentile_cont` to support other parameters, perhaps some aren't carried over? I can take a look if this doesn't ring a bell with anyone :+1: -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
