Joris Van den Bossche created ARROW-11000:
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Summary: [Python] Enable random access reading for Python file
objects (if supported)
Key: ARROW-11000
URL: https://issues.apache.org/jira/browse/ARROW-11000
Project: Apache Arrow
Issue Type: Improvement
Components: Python
Reporter: Joris Van den Bossche
{{arrow::py::PyReadableFile::ReadAt}} is being commented as thread-safe (it
puts a lock on the underlying python file) and should thus allow random access
in parallel code (for example, reading a subset (eg column) of a parquet file).
However, based on experimentation, it seems this doesn't work (eg with s3fs
filesystem to read a specific parquet column
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