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Posted to jira@arrow.apache.org by "Jorge (Jira)" <ji...@apache.org> on 2020/09/19 07:26:00 UTC

[jira] [Created] (ARROW-10042) [Rust] Buffer equalities are incorrect

Jorge created ARROW-10042:
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             Summary: [Rust] Buffer equalities are incorrect
                 Key: ARROW-10042
                 URL: https://issues.apache.org/jira/browse/ARROW-10042
             Project: Apache Arrow
          Issue Type: Bug
    Affects Versions: 1.0.1
            Reporter: Jorge


Two (byte) buffers are equal if their contents are equal.

However, currently, {{BufferData}} comparison ({{PartialEq}}) uses its {{capacity}} as part of the comparison. Therefore, two slices are considered different even when their content is the same but the corresponding {{BufferData}} has a different capacity.

Since this equality is used by {{Buffer}}'s equality, which is used by all our arrays, currently arrays are different when their contents are the same but the underlying capacity is different. I am not sure that this is what we want.



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