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Posted to jira@arrow.apache.org by "Nicola Crane (Jira)" <ji...@apache.org> on 2021/09/22 11:34:00 UTC
[jira] [Updated] (ARROW-14067) [R] Add error handling to C++
compute functions listed via list_compute_functions() which don't have
bindings in R or options not supplied by user
[ https://issues.apache.org/jira/browse/ARROW-14067?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Nicola Crane updated ARROW-14067:
---------------------------------
Summary: [R] Add error handling to C++ compute functions listed via list_compute_functions() which don't have bindings in R or options not supplied by user (was: [R] Add error handling to C++ compute functions listed via list_compute_functions() which don't have bindings in R)
> [R] Add error handling to C++ compute functions listed via list_compute_functions() which don't have bindings in R or options not supplied by user
> --------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: ARROW-14067
> URL: https://issues.apache.org/jira/browse/ARROW-14067
> Project: Apache Arrow
> Issue Type: Improvement
> Components: R
> Reporter: Nicola Crane
> Priority: Major
>
> Currently we have the function {{list_compute_functions()}} which lists all available Arrow compute functions. However, it can return functions which have been implemented in C++ but don't yet have bindings in R.
> A recent ticket implemented (nearly) all of the remaining compute functions without bound options at that moment, but more could appear.
> Currently the error message shown is:
> {code:java}
> library(dplyr)
> library(arrow) # 5.0.0.2
> Table$create(tibble::tibble(Species = c("versicolor", "virginica", "setosa"))) %>%
> mutate(x = arrow_utf8_trim(Species, options = list(characters = "a")))
> ## Error: Invalid: Attempted to initialize KernelState from null FunctionOptions
> {code}
> We should catch this and instead raise a more user-friendly error.
> Also, if a valid function is called without options supplied, we get a {{could not find function}} error:
> {code:java}
> library(dplyr)
> library(arrow) # dev
> Table$create(tibble::tibble(Species = c("versicolor", "virginica", "setosa"))) %>%
> mutate(x = arrow_utf8_trim(Species))
> ## Error in arrow_utf8_trim(Species) : could not find function "arrow_utf8_trim"
> {code}
> It'd be great to instead inform the user that the correct options haven't been supplied.
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