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[Data] Fix MCAP datasource import for better compatibility #57964

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Merged
richardliaw merged 2 commits into from
Oct 23, 2025
Merged

[Data] Fix MCAP datasource import for better compatibility #57964

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93c815b
Fix MCAP datasource import for better compatibility
soffer-anyscale Oct 21, 2025
d28ab59
Merge branch 'master' into fix-mcap-reader-import
soffer-anyscale Oct 22, 2025
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4 changes: 2 additions & 2 deletions python/ray/data/_internal/datasource/mcap_datasource.py
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Original file line number Diff line number Diff line change
Expand Up @@ -139,9 +139,9 @@ def _read_stream(self, f: "pyarrow.NativeFile", path: str) -> Iterator[Block]:
Raises:
ValueError: If the MCAP file cannot be read or has invalid format.
"""
import mcap
from mcap.reader import make_reader

reader = mcap.reader.make_reader(f)
reader = make_reader(f)
# Note: MCAP summaries are optional and iter_messages works without them
# We don't need to validate the summary since it's not required

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