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Posted to jira@arrow.apache.org by "Eduardo Ponce (Jira)" <ji...@apache.org> on 2021/10/02 04:36:00 UTC

[jira] [Created] (ARROW-14203) [C++] Fix description of ExecBatch.length for Scalars in aggregate kernels

Eduardo Ponce created ARROW-14203:
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             Summary: [C++] Fix description of ExecBatch.length for Scalars in aggregate kernels
                 Key: ARROW-14203
                 URL: https://issues.apache.org/jira/browse/ARROW-14203
             Project: Apache Arrow
          Issue Type: Bug
            Reporter: Eduardo Ponce
             Fix For: 6.0.0


[The comment for the *length* data member of ExecBatch|https://github.com/apache/arrow/blob/master/cpp/src/arrow/compute/exec.h#L202-L211] states that it will always have a value of 1 for Scalar types. This is misleading/incorrect because for aggregate kernels you could have an ExecBatch formed by projecting just the partition columns from a batch, in which case you'd have scalar rows with a length > 1.



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