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David Li updated ARROW-13161: ----------------------------- Labels: dataset datasets (was: ) > [C++][Dataset] 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 > Priority: Major > Labels: dataset, datasets > > 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 -- This message was sent by Atlassian Jira (v8.3.4#803005)