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https://issues.apache.org/jira/browse/ARROW-11645?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jorge Leitão updated ARROW-11645:
---------------------------------
    Description: 
The DataType interval is currently implemented as a i32 or i64. However, that 
is incorrect and does not follow the spec.
{code:java}
// DAY_TIME - Indicates the number of elapsed days and milliseconds,
      
      
        //   stored as 2 contiguous 32-bit integers (8-bytes in total).  Support
      
      
        //   of this IntervalUnit is not required for full arrow compatibility.
{code}
See [https://github.com/apache/arrow/blob/master/format/Schema.fbs]

E.g. I think that IntervalYearMonthType should be a `struct(i32,i32)` with a C 
representation or something, which is how it is defined in the spec.

  was:
The DataType interval is currently implemented as a i32 or i64. However, that 
is incorrect and does not follow the spec.

See https://github.com/apache/arrow/blob/master/format/Schema.fbs



> [Rust] Interval is out of spec
> ------------------------------
>
>                 Key: ARROW-11645
>                 URL: https://issues.apache.org/jira/browse/ARROW-11645
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Rust
>            Reporter: Jorge Leitão
>            Priority: Critical
>
> The DataType interval is currently implemented as a i32 or i64. However, that 
> is incorrect and does not follow the spec.
> {code:java}
> // DAY_TIME - Indicates the number of elapsed days and milliseconds,
>       
>       
>         //   stored as 2 contiguous 32-bit integers (8-bytes in total).  
> Support
>       
>       
>         //   of this IntervalUnit is not required for full arrow 
> compatibility.
> {code}
> See [https://github.com/apache/arrow/blob/master/format/Schema.fbs]
> E.g. I think that IntervalYearMonthType should be a `struct(i32,i32)` with a 
> C representation or something, which is how it is defined in the spec.



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