AngelFelizR opened a new issue, #39139: URL: https://github.com/apache/arrow/issues/39139
### Describe the enhancement requested **glimpse** is loading the data to memory which make it a really slow process. For example, using the [High Volume For-Hire Vehicle Trip Records](https://www.nyc.gov/site/tlc/about/tlc-trip-record-data.page) of 2022. ```r > library(dplyr) > library(arrow) > NycTrips2022 <- + here::here("data/trip-data/year=2022") |> + open_dataset() > > system.time(glimpse(NycTrips2022)) FileSystemDataset with 12 Parquet files 212,416,083 rows x 25 columns $ hvfhs_license_num <string> "HV0003", "HV0003", "HV0003", "HV0003",… $ dispatching_base_num <string> "B03404", "B03404", "B03404", "B03404",… $ originating_base_num <string> "B03404", "B03404", "B03404", "B03404",… $ request_datetime <timestamp[us]> 2021-12-31 20:05:31, 2021-12-31 20:19:2… $ on_scene_datetime <timestamp[us]> 2021-12-31 20:05:40, 2021-12-31 20:22:0… $ pickup_datetime <timestamp[us]> 2021-12-31 20:07:24, 2021-12-31 20:22:3… $ dropoff_datetime <timestamp[us]> 2021-12-31 20:18:28, 2021-12-31 20:30:1… $ PULocationID <int64> 170, 237, 237, 262, 229, 263, 113, 151,… $ DOLocationID <int64> 161, 161, 161, 229, 141, 79, 140, 75, 2… $ trip_miles <double> 1.180, 0.820, 1.180, 1.650, 1.650, 4.51… $ trip_time <int64> 664, 460, 595, 303, 461, 762, 931, 843,… $ base_passenger_fare <double> 24.90, 11.97, 29.82, 7.91, 9.44, 17.67,… $ tolls <double> 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.0… $ bcf <double> 0.75, 0.36, 0.89, 0.24, 0.28, 0.53, 0.5… $ sales_tax <double> 2.21, 1.06, 2.65, 0.70, 0.84, 1.57, 1.4… $ congestion_surcharge <double> 2.75, 2.75, 2.75, 2.75, 2.75, 2.75, 2.7… $ airport_fee <double> 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,… $ tips <double> 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, … $ driver_pay <double> 23.03, 12.32, 23.30, 6.30, 7.44, 12.25,… $ shared_request_flag <string> "N", "N", "N", "N", "N", "N", "N", "N",… $ shared_match_flag <string> "N", "N", "N", "N", "N", "N", "N", "N",… $ access_a_ride_flag <string> " ", " ", " ", " ", " ", " ", " ", " ",… $ wav_request_flag <string> "N", "N", "N", "N", "N", "N", "N", "N",… $ wav_match_flag <string> "N", "N", "N", "N", "N", "N", "N", "N",… $ month <int32> 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, … Call `print()` for full schema details user system elapsed 222.25 174.87 157.95 > sessionInfo() R version 4.2.3 (2023-03-15 ucrt) Platform: x86_64-w64-mingw32/x64 (64-bit) Running under: Windows 10 x64 (build 19045) Matrix products: default locale: [1] LC_COLLATE=English_United States.utf8 [2] LC_CTYPE=English_United States.utf8 [3] LC_MONETARY=English_United States.utf8 [4] LC_NUMERIC=C [5] LC_TIME=English_United States.utf8 attached base packages: [1] stats graphics grDevices datasets utils methods base other attached packages: [1] arrow_14.0.0.1 dplyr_1.1.4 loaded via a namespace (and not attached): [1] here_1.0.1 fansi_1.0.5 rprojroot_2.0.4 [4] tzdb_0.4.0 assertthat_0.2.1 utf8_1.2.4 [7] R6_2.5.1 lifecycle_1.0.4 magrittr_2.0.3 [10] pillar_1.9.0 rlang_1.1.2 cli_3.6.1 [13] renv_1.0.3 rstudioapi_0.15.0 vctrs_0.6.4 [16] generics_0.1.3 tools_4.2.3 bit64_4.0.5 [19] glue_1.6.2 purrr_1.0.2 bit_4.0.5 [22] yaml_2.3.7 compiler_4.2.3 pkgconfig_2.0.3 [25] tidyselect_1.2.0 tibble_3.2.1 ``` To solve this problem, we could create a method for **glimpse**. ### Component(s) R -- 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]
