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Posted to jira@arrow.apache.org by "Andrew Lamb (Jira)" <ji...@apache.org> on 2021/02/03 16:03:00 UTC

[jira] [Updated] (ARROW-11414) [Rust] Reduce copies in Schema::try_merge

     [ https://issues.apache.org/jira/browse/ARROW-11414?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Lamb updated ARROW-11414:
--------------------------------
    Component/s: Rust

> [Rust] Reduce copies in Schema::try_merge
> -----------------------------------------
>
>                 Key: ARROW-11414
>                 URL: https://issues.apache.org/jira/browse/ARROW-11414
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Rust
>            Reporter: Andrew Lamb
>            Assignee: Andrew Lamb
>            Priority: Minor
>              Labels: pull-request-available
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> https://github.com/apache/arrow/blob/ab5fc979c69ccc5dde07e1bc1467b02951b4b7e9/rust/arrow/src/datatypes.rs#L1832-L1860
> I was looking at this code yesterday while using it in IOx -- https://github.com/influxdata/influxdb_iox/pull/703
> Even though Schema::try_merge requires a slice of Schemas (not schema refs), it copies all of its fields. This is not ideal in the common case where most of the fields in the Schema will be the same



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