Ben Kietzman created ARROW-13264:
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Summary: [C++][Dataset] Enforce single use of Scanner
Key: ARROW-13264
URL: https://issues.apache.org/jira/browse/ARROW-13264
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Ben Kietzman
Scanner is not guaranteed to be scannable more than once (for example, a
Scanner which wraps a RecordBatchReader cannot be rewound). However many c++
unit tests reuse scanners and there aren't clear comments explaining that
scanners shouldn't be assumed reusable. The simplest solution is to explicitly
require that all Scanners be single-use
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