Jayjeet Chakraborty created ARROW-13161:
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Summary: Allow setting FragmentReadahead to 0 in ScannerBuilder
Key: ARROW-13161
URL: https://issues.apache.org/jira/browse/ARROW-13161
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Jayjeet Chakraborty
I have an application where I need to set fragment readahead to 0. But, looks
like for some reason the ScannerBuilder does not allow setting the fragment
readahead to 0 [1]. It would be very helpful to know why it is that way and if
a PR lifting that restriction would be accepted because a docstring mentions
that users can set fragment readahead to 0 if they want [2].
[1]https://github.com/apache/arrow/blob/master/cpp/src/arrow/dataset/scanner.cc#L864
[2]https://github.com/apache/arrow/blob/998a2a1668ea57a49d85fbb38f7f0e7eb94c29db/cpp/src/arrow/dataset/scanner.h#L93
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