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https://issues.apache.org/jira/browse/ARROW-9389?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney reassigned ARROW-9389:
-----------------------------------
Assignee: Wes McKinney
> [C++] Can't call isin/match through CallFunction
> ------------------------------------------------
>
> Key: ARROW-9389
> URL: https://issues.apache.org/jira/browse/ARROW-9389
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Reporter: Neal Richardson
> Assignee: Wes McKinney
> Priority: Major
> Labels: compute
> Fix For: 1.0.0
>
>
> From R:
> {code:r}
> library(arrow)
> a <- Array$create(1:4)
> b <- Array$create(c(2L, 4L, 3L))
> arrow:::call_function("isin", a, b)
> {code}
> says that "isin" takes only 1 argument, not 2, which doesn't make sense. In
> C++ scalar_set_lookup.cc, I see {{auto isin =
> std::make_shared<ScalarFunction>("isin", Arity::Unary());}}, which is the
> source of that validation I guess, but the kernel in api_scalar.cc has
> signature {{Result<Datum> IsIn(const Datum& values, const Datum& value_set,
> ExecContext* ctx)}}.
> If I actually call "isin" with one argument, i.e.
> {{arrow:::call_function("isin", a)}}, it segfaults.
> Changing the definition to Arity::Binary(), it accepts 2 arguments, but it
> errors with {{NotImplemented: Function isin has no kernel matching input
> types (array[int32], array[int32])}}
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