[GitHub] [arrow] westonpace opened a new issue, #34344: [C++] Pass function registry to dataset operations

["westonpace (via GitHub)" <gi...@apache.org>]

westonpace opened a new issue, #34344:
URL: https://github.com/apache/arrow/issues/34344

   ### Describe the enhancement requested
   
   The datasets API does various compute operations on expressions.  All of these operations today use the default function registry.  This could prevent us from being able to use UDFs in these operations.
   
   For example, if someone had a filter `my_udf(x) > 7` and, via partitioning, we know that `x=="a"` then we could potentially evaluate `my_udf("a")` to determine if we need to skip the fragment.  Today we will try this with the default function registry and, if `my_udf` is not defined, we will fail.
   
   At the moment I'm deferring this because I expect this situation would be quite rare (would require not only UDFs but UDFs that are not registered with the default function registry) and the changes are rather spread out through the code base.
   
   ### Component(s)
   
   C++


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Re: [I] [C++] Pass function registry to dataset operations [arrow]

["thisisnic (via GitHub)" <gi...@apache.org>]

thisisnic closed issue #34344: [C++] Pass function registry to dataset operations
URL: https://github.com/apache/arrow/issues/34344


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Re: [I] [C++] Pass function registry to dataset operations [arrow]

["thisisnic (via GitHub)" <gi...@apache.org>]

thisisnic commented on issue #34344:
URL: https://github.com/apache/arrow/issues/34344#issuecomment-3921696840

   This issue has been marked as stale because it has had no activity in the past 2 years. Please remove the stale label or comment below, or this issue will be closed in 14 days.


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