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https://issues.apache.org/jira/browse/ARROW-8637?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Hildreth updated ARROW-8637:
---------------------------------
Priority: Minor (was: Major)
> [Rust] Resolve Issues with `prettytable-rs` dependency
> ------------------------------------------------------
>
> Key: ARROW-8637
> URL: https://issues.apache.org/jira/browse/ARROW-8637
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Rust
> Reporter: Mark Hildreth
> Priority: Minor
>
> {{prettytable-rs}} is a dependency of Arrow for creating a string for
> displaying record batches in a tabular form (see [pretty
> util|https://github.com/apache/arrow/blob/c546eef41e6ab20c4ca29a2d836987959843896f/rust/arrow/src/util/pretty.rs#L24-L25])
> The crate, however, has some issues:
>
> 1.) {{prettytable-rs}} has a dependency on the {{term}} crate. The {{term}}
> crate is under minimal maintenance, and it is advised to switch to another
> crate. This will probably pop up in an [informational security
> advisory|https://rustsec.org/advisories/RUSTSEC-2018-0015] if it's decided
> one day to audit the crates.
> 2.) The crate also has a dependency on {{encode-unicode}}. While not
> problematic in its own right, this crate implements some traits which can
> bring about confusing type inference issues. For example, after adding the
> {{prettytable-rs}} dependency in arrow, the following error occurred what
> attempting to compile the parquet crate:
>
> {{let seed_vec: Vec<u8> =}}
> {{ Standard.sample_iter(&mut rng).take(seed_len).collect();}}
>
> {{error[E0282]: type annotations needed}}
> {{ --> parquet/src/encodings/rle.rs:833:26}}
> {{ |}}
> {{833 | Standard.sample_iter(&mut rng).take(seed_len).collect();}}
> {{ | ^^^^^^^^^^^ cannot infer type for `T`}}
>
> Any user of the arrow crate would see a similar style of error.
>
> There are a few possible ways to resolve this:
>
> 1.) Hopefully hear from the crate maintainer. There is a [PR
> open|https://github.com/phsym/prettytable-rs/pull/125] for the encode-unicode
> issue.
> 2.) Find a different table-generating crate with less issues.
> 3.) Fork and fix prettytable-rs.
> 4.) ???
>
>
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