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Posted to jira@arrow.apache.org by "Chenxi Li (Jira)" <ji...@apache.org> on 2022/01/25 07:34:00 UTC

[jira] [Created] (ARROW-15441) [C++][Compute] hash_count aggregation of a null type column is incorrect

Chenxi Li created ARROW-15441:
---------------------------------

             Summary: [C++][Compute] hash_count aggregation of a null type column is incorrect
                 Key: ARROW-15441
                 URL: https://issues.apache.org/jira/browse/ARROW-15441
             Project: Apache Arrow
          Issue Type: Bug
          Components: C++
            Reporter: Chenxi Li
            Assignee: Chenxi Li


The result of hash_count such array is incorrect.
||argument||key||
|NULL|1|
|NULL|1|

 
||CountOptions||Expected||Actual||
|ALL|2|2|
|ONLY_VALID|{color:#FF0000}0{color}|{color:#FF0000}2{color}|
|ONLY_NULL|{color:#FF0000}2{color}|{color:#FF0000}0{color}|



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