jonathanc-n opened a new pull request, #16436:
URL: https://github.com/apache/datafusion/pull/16436
## Which issue does this PR close?
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- Closes #16415.
## Rationale for this change
The algorithm that is used for mark joins in
`calculate_indices_by_join_type` might be confusing for newer contributors so
we should add a comment to clarify.
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changes and offer better suggestions for fixes.
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## What changes are included in this PR?
Added comments with an example to explain how the algorithm works.
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