ianmcook commented on a change in pull request #11018:
URL: https://github.com/apache/arrow/pull/11018#discussion_r712645546
##########
File path: r/R/dplyr-summarize.R
##########
@@ -136,6 +136,17 @@ summarize_eval <- function(name, quosure, ctx, recurse =
FALSE) {
return()
}
+ if ("median" %in% funs_in_expr) {
+ expr <- wrap_median(expr)
Review comment:
@nealrichardson the code I needed to add inside `wrap_median()` and in
various other places here to deal with the `tdigest` and `hash_tdigest` kernel
output is unpleasant stuff. I think it's best to keep `wrap_median()`
self-contained instead of contaminating `extract_aggregations()` with it. What
do you think?
I think we should ask for pair of `appx_median` and `hash_appx_median`
kernels that wrap `tdigest(q = 0.5)` and `hash_tdigest(q = 0.5)`. That would
allow us to clean up this mess. I opened ARROW-14052 for that.
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