paleolimbot commented on issue #39004:
URL: https://github.com/apache/arrow/issues/39004#issuecomment-1875580374
Slightly more minimal reprex:
``` r
library(arrow, warn.conflicts = FALSE)
#> Some features are not enabled in this build of Arrow. Run `arrow_info()`
for more information.
x <- runif(29500000) * 10
x_altrep <- as.vector(as_chunked_array(x))
bench::mark(
is.na(x),
is.na(x_altrep)
)
#> # A tibble: 2 × 6
#> expression min median `itr/sec` mem_alloc `gc/sec`
#> <bch:expr> <bch:tm> <bch:tm> <dbl> <bch:byt> <dbl>
#> 1 is.na(x) 23.7ms 24.1ms 41.3 113MB 15.9
#> 2 is.na(x_altrep) 244.4ms 244.5ms 4.09 113MB 0
```
<sup>Created on 2024-01-03 with [reprex
v2.0.2](https://reprex.tidyverse.org)</sup>
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