Spenserrrr commented on code in PR #58903:
URL: https://github.com/apache/spark/pull/58903#discussion_r4066711612
##########
python/pyspark/sql/conversion.py:
##########
@@ -180,6 +180,115 @@ def select_columns(cls, batch: "pa.RecordBatch",
column_indices: list[int]) -> "
[batch.schema.names[i] for i in column_indices],
)
+ @staticmethod
+ def concat_batches(batches: Sequence["pa.RecordBatch"]) ->
"pa.RecordBatch":
Review Comment:
I considered Iterable, but this helper intentionally uses len(), and
indexing for the single-batch identity fast path, and all current callers pass
lists. I kept Sequence to make that requirement explicit.
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