[ARROW-14025] [R][C++] PreBuffer is not enabled when scanning parquet via exec nodes

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 6.0.0
• Component/s: C++, R
• Labels: pull-request-available query-engine
• External issue URL: https://github.com/apache/arrow/issues/29623
• Assignee: Neal Richardson
• Reporter: Weston Pace
• Created: 17/Sep/21 11:55
• Updated: 11/Jan/23 08:37
• Resolved: 12/Oct/21 20:13

Description

In ExecNode_Scan a ScanOptions object is built up. If we are reading parquet we should enable pre-buffering. This is done by creating a ParquetFragmentScanOptions object and enabling pre-buffering.

Alternatively, we could just default pre-buffering to true for asynchronous scans of parquet data.

Issue Links

• links to: GitHub Pull Request #11386