[jira] [Commented] (ARROW-13943) [Python][C++] Hide hash_* functions from pyarrow.compute

["Antoine Pitrou (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-13943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17438823#comment-17438823 ] 

Antoine Pitrou commented on ARROW-13943:
----------------------------------------

cc [~amol-]

> [Python][C++] Hide hash_* functions from pyarrow.compute
> --------------------------------------------------------
>
>                 Key: ARROW-13943
>                 URL: https://issues.apache.org/jira/browse/ARROW-13943
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++, Python
>            Reporter: Weston Pace
>            Priority: Major
>
> These functions have been specifically forbidden from being called by python.  An attempt to do so will yield:
> pyarrow.lib.ArrowNotImplementedError: Direct execution of HASH_AGGREGATE functions
> The functions should not show up in pc.list_functions at all and pc.get_function should return None if given 'hash_sum'.  Perhaps they could be stored in a different registry?  Or, since we are special casing them anyways, special case them in some way they can be hidden?



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