refactor: Use BufferedBatchState enum for SMJ spilling
#17429
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2010YOUY01
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Sep 5, 2025
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Thank you, this is a nice improvement to the existing code.
| /// None if the batch spilled to disk th | ||
| pub batch: Option<RecordBatch>, | ||
| /// Represents in memory or spilled record batch | ||
| pub batch: BufferedBatchState, |
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I think this BufferedBatchState enum should include all intermediate data into the states, for example join_arrays. When the main batch is spilled, the join key array should either be also spilled or throw away, otherwise it will be leaking memory.
Perhaps we can leave a TODO in the comment now? This will be a big change.
comphead
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this is pretty neat thanks @jonathanc-n
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Which issue does this PR close?
This was brought up by @alamb in the SMJ spilling pull request.
Rationale for this change
Using enum to represent batch spill state is simpler than two enums
Wanted to get this out of the way before switching HJ spilling to SMJ during runtime.
What changes are included in this PR?
Use enum instead of double option for expressing the state of the buffered batch