Andy Grove created ARROW-10582:
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Summary: [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
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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