[ARROW-3774] [C++] Change parquet::arrow::FileReader::ReadRowGroups to read into contiguous arrays

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Component/s: C++
• Labels: parquet
• External issue URL: https://github.com/apache/arrow/issues/15869
• Assignee: Wes McKinney
• Reporter: Uwe Korn
• Created: 19/Aug/18 14:27
• Updated: 11/Jan/23 07:29
• Resolved: 13/Dec/18 03:18

Description

Instead of creating a chunk per RowGroup, we should read at least for primitive type into a single, pre-allocated Array. This needs some new functionality in the Record reader classes and thus should be done after https://github.com/apache/parquet-cpp/pull/462 is merged.

Issue Links

• relates to: PARQUET-1158 [C++] Basic RowGroup filtering