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https://issues.apache.org/jira/browse/AVRO-3331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17484553#comment-17484553
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Martin Tzvetanov Grigorov commented on AVRO-3331:
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I wonder how this is supposed to work...
num_bigint does not support decimals!
{code:java}
use num_traits::FromPrimitive;
use num_traits::cast::ToPrimitive;
let big_int = BigInt::from_f32(9936.23_f32).unwrap();
println!("as float {:.2?}", big_int.to_f32().unwrap()); // prints 9936.00,
i.e. .23 is lost!{code}
I might be missing something but I have the feeling we will have to rework it
to use some BigDecimal library, like https://github.com/akubera/bigdecimal-rs
> Rust: Cannot extract Decimal value
> ----------------------------------
>
> Key: AVRO-3331
> URL: https://issues.apache.org/jira/browse/AVRO-3331
> Project: Apache Avro
> Issue Type: Bug
> Components: rust
> Reporter: Thomas Schilling
> Assignee: Martin Tzvetanov Grigorov
> Priority: Major
>
> The [Decimal|https://docs.rs/avro-rs/latest/avro_rs/struct.Decimal.html] type
> (as of 0.13) doesn't have any methods or trait implementations that allow
> users to extract the value. The only workaround I could think of would be to
> parse the output of the `Debug` implementation. But that's clearly very
> inefficient and fragile.
> The (unreleased?) version 0.14 also seems to have the same issue
> ([source|https://github.com/apache/avro/blob/master/lang/rust/src/decimal.rs]).
> It might just be enough to make the {{to_vec }}method public and specify how
> to interpret the result vector.
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