[jira] [Commented] (ARROW-14908) [R] join followed by a summarize and collect crashes R

["Neal Richardson (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-14908?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17450603#comment-17450603 ] 

Neal Richardson commented on ARROW-14908:
-----------------------------------------

Can you install the latest patch release (6.0.1)? These all work for me on that version.

> [R] join followed by a summarize and collect crashes R
> ------------------------------------------------------
>
>                 Key: ARROW-14908
>                 URL: https://issues.apache.org/jira/browse/ARROW-14908
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: R
>    Affects Versions: 6.0.0
>         Environment: R version 4.0.4
>            Reporter: Fabio Machado
>            Priority: Critical
>
> {code:java}
> library(tidyverse)
> library(arrow)
> car_info <- rownames_to_column(mtcars, "car_info") 
> cars_arrow_table <- arrow_table(car_info)
> other_mtcars_data <- select(car_info, 1) %>% 
>   mutate(main_color = sample( c("red", "blue", "white", "black"), size = n(), replace = TRUE)) %>% 
>   arrow::arrow_table()
> temp <- tempdir()
> par_temp <- paste0(temp, "\\parquet")
> car_info %>% arrow::write_dataset(par_temp)
> cars_arrow <- arrow::open_dataset(par_temp) 
> # using arrow tables works ------------------------------------------------------
> cars_arrow_table %>% left_join(other_mtcars_data) %>% count(main_color) %>% collect()
> # using open dataset crashes R ------------------------------------------------------------------
> other_mtcars_data %>% 
>   left_join(cars_arrow) %>% 
>   count(main_color) %>% 
>   collect()
> #other variation also crash
> cars_arrow %>% 
>   left_join(other_mtcars_data) %>% 
>   count(main_color) %>% 
>   collect()
> cars_arrow %>% 
>   left_join(other_mtcars_data) %>% 
>   group_by(main_color) %>% 
>   summarise(n = n()) %>% 
>   collect()
> #compute also crashes
> cars_arrow %>% 
>   left_join(other_mtcars_data) %>% 
>   count(main_color) %>% 
>   compute()
> # workaround with duckdb ------------------------------------------------------
> ##this works
> cars_duck <- to_duckdb(cars_arrow, auto_disconnect = TRUE)
> other_cars_duck <- to_duckdb(other_mtcars_data, auto_disconnect = TRUE)
>     
> cars_duck %>% 
>   left_join(other_cars_duck) %>%
>   count(main_color) %>%
>   collect()
> ##this doesn't (don't know if expected to work actually)
> cars_arrow %>% 
>   left_join(other_mtcars_data) %>% 
>   to_duckdb() {code}



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