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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] [Updated] (ARROW-10042) [Rust] Buffer equalities may be incorrect

     [ https://issues.apache.org/jira/browse/ARROW-10042?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jorge updated ARROW-10042:
--------------------------
    Summary: [Rust] Buffer equalities may be incorrect  (was: [Rust] Buffer equalities are incorrect)

> [Rust] Buffer equalities may be 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
>            Priority: Major
>
> 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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