2010YOUY01 commented on code in PR #13707:
URL: https://github.com/apache/datafusion/pull/13707#discussion_r1879858897
##########
datafusion/core/src/physical_optimizer/enforce_distribution.rs:
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@@ -836,7 +836,10 @@ fn add_roundrobin_on_top(
n_target: usize,
) -> Result<DistributionContext> {
// Adding repartition is helpful:
Review Comment:
```suggestion
// Always perform repartitioning on data sources, as they may be
imbalanced or consist of too many small partitions.
```
A 'why' comment here can help understanding
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