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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 IntervalDayTimeType should be a `struct(i32,i32)` with a C
representation or something, which is how it is defined in the spec.
This would also make it easier to read from and write to, as we do not need to
transmute or bitmask the values to get the correct values.
was:
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.
> [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 IntervalDayTimeType should be a `struct(i32,i32)` with a C
> representation or something, which is how it is defined in the spec.
> This would also make it easier to read from and write to, as we do not need
> to transmute or bitmask the values to get the correct values.
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