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Posted to jira@arrow.apache.org by "Percy Camilo Triveño Aucahuasi (Jira)" <ji...@apache.org> on 2021/09/22 22:59:00 UTC
[jira] [Comment Edited] (ARROW-14035) [C++][Compute] Implement
non-hash count_distinct aggregate kernel
[ https://issues.apache.org/jira/browse/ARROW-14035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17418863#comment-17418863 ]
Percy Camilo Triveño Aucahuasi edited comment on ARROW-14035 at 9/22/21, 10:58 PM:
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Can you please elaborate more about this requirement?
# Do we need to compute the same thing of hash_count_distinct but without using the hash table from the hash group?
# Are we going to offer non hash version for all hash_x functions too? (hash_distinct, hash_count, hash_sum)
cc [~icook] @lidavidm
was (Author: aucahuasi):
Can you please elaborate more about this requirement?
# Do we need to compute the same thing of hash_distinct but without using the hash table from the hash group?
# Are we going to offer non hash version for all hash_x functions too? (hash_distinct, hash_count, hash_sum)
cc [~icook] @lidavidm
> [C++][Compute] Implement non-hash count_distinct aggregate kernel
> -----------------------------------------------------------------
>
> Key: ARROW-14035
> URL: https://issues.apache.org/jira/browse/ARROW-14035
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Ian Cook
> Assignee: Percy Camilo Triveño Aucahuasi
> Priority: Critical
> Labels: kernel
> Fix For: 6.0.0
>
>
> ARROW-12728 added a {{hash_count_distinct}} hash aggregate kernel, but there is no non-hash {{count_distinct}} aggregate kernel.
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