You are viewing a plain text version of this content. The canonical link for it is here.
Posted to jira@arrow.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2021/02/11 12:16:00 UTC
[jira] [Updated] (ARROW-11594) [Rust] Support pretty printing with
NullArrays
[ https://issues.apache.org/jira/browse/ARROW-11594?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated ARROW-11594:
-----------------------------------
Labels: pull-request-available (was: )
> [Rust] Support pretty printing with NullArrays
> ----------------------------------------------
>
> Key: ARROW-11594
> URL: https://issues.apache.org/jira/browse/ARROW-11594
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Rust
> Reporter: Andrew Lamb
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The whole point of `NullArray::new_with_type` is to to be able to cheaply construct entirely null columns, with a smaller memory footprint.
> Currently trying to print them out causes a painic:
> {code}
> #[test]
> fn test_pretty_format_null() -> Result<()> {
> // define a schema.
> let schema = Arc::new(Schema::new(vec![
> Field::new("a", DataType::Utf8, true),
> Field::new("b", DataType::Int32, true),
> ]));
> let num_rows = 4;
> // define data (null)
> let batch = RecordBatch::try_new(
> schema,
> vec![
> Arc::new(NullArray::new_with_type(num_rows, DataType::Utf8)),
> Arc::new(NullArray::new_with_type(num_rows, DataType::Int32)),
> ],
> )?;
> let table = pretty_format_batches(&[batch])?;
> }
> {code}
> Panics:
> {code}
> failures:
> ---- util::pretty::tests::test_pretty_format_null stdout ----
> thread 'util::pretty::tests::test_pretty_format_null' panicked at 'called `Option::unwrap()` on a `None` value', arrow/src/util/display.rs:201:27
> {code}
--
This message was sent by Atlassian Jira
(v8.3.4#803005)