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  1. Apache Arrow
  2. ARROW-14321

[R] segfault converting dictionary ChunkedArray with 0 chunks

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    Description

      It appears to happen when one of the filter parts has no matching rows:

      library(arrow)
      library(dplyr)
      first_date <- lubridate::ymd_hms("2015-04-29 03:12:39")
      
      df1 <- tibble::tibble(
        int = 1:10,
        dbl = as.numeric(1:10),
        lgl = rep(c(TRUE, FALSE, NA, TRUE, FALSE), 2),
        chr = letters[1:10],
        fct = factor(LETTERS[1:10]),
        ts = first_date + lubridate::days(1:10)
      )
      
      ds <- InMemoryDataset$create(df1)
      
      # works
      ds %>% 
        filter(int < 8) %>%
        arrange(dbl) %>%
        collect()
      
      # segfaults
      ds %>% 
        filter(int < 8, int > 55) %>%
        arrange(dbl) %>%
        collect()
      
       segfaults
      ds %>% 
        filter(int < 0) %>%
        arrange(dbl) %>%
        collect()
      

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              westonpace Weston Pace
              jonkeane Jonathan Keane
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