Francois Saint-Jacques created ARROW-6969:
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Summary: [C++][Dataset] ParquetScanTask eagerly load file
Key: ARROW-6969
URL: https://issues.apache.org/jira/browse/ARROW-6969
Project: Apache Arrow
Issue Type: Improvement
Reporter: Francois Saint-Jacques
The file content should only be read when invoking ParquetScanTask::Scan, not
on construction. This blocks reading in a true streaming fashion with memory
constraints.
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