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[python/hotfix] fix ray dataset not lazy loading issue when parallelism = 1 #6916

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Merged
JingsongLi merged 1 commit into from
Dec 28, 2025
Merged

[python/hotfix] fix ray dataset not lazy loading issue when parallelism = 1 #6916

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11 changes: 3 additions & 8 deletions paimon-python/pypaimon/read/table_read.py
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Original file line number Diff line number Diff line change
Expand Up @@ -144,14 +144,9 @@ def to_ray(self, splits: List[Split], parallelism: int = 1) -> "ray.data.dataset
if parallelism < 1:
raise ValueError(f"parallelism must be at least 1, got {parallelism}")

if parallelism == 1:
# Single-task read (simple mode)
return ray.data.from_arrow(self.to_arrow(splits))
else:
# Distributed read with specified parallelism
from pypaimon.read.ray_datasource import PaimonDatasource
datasource = PaimonDatasource(self, splits)
return ray.data.read_datasource(datasource, parallelism=parallelism)
from pypaimon.read.ray_datasource import PaimonDatasource
datasource = PaimonDatasource(self, splits)
return ray.data.read_datasource(datasource, parallelism=parallelism)

def _create_split_read(self, split: Split) -> SplitRead:
if self.table.is_primary_key_table and not split.raw_convertible:
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