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https://issues.apache.org/jira/browse/ARROW-10582?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Grove reassigned ARROW-10582:
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Assignee: Andy Grove
> [Rust] [DataFusion] Implement "repartition" operator
> ----------------------------------------------------
>
> Key: ARROW-10582
> URL: https://issues.apache.org/jira/browse/ARROW-10582
> Project: Apache Arrow
> Issue Type: New Feature
> Components: Rust, Rust - DataFusion
> Reporter: Andy Grove
> Assignee: Andy Grove
> Priority: Major
>
> The repartition operator should read batches from its input partitions and
> then map that data to its output partitions using a specific partitioning
> scheme.
> The simplest and most efficient partition schema would be a "round robin
> batch partitioner". For each input batch, it would pick the next output
> partition to write to. This is a convenient way to change the number of
> partitions up or down with minimal overhead.
> Another example of a partitioning scheme would be a hash partitioner, which
> computes the hash of the partition keys on each incoming row and then applies
> a modulus to determine which output partition to write to.
>
>
>
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