[C++] Reorganize parquet/arrow/reader.cc, remove code duplication, improve readability #22466
Description
The code in parquet/arrow/reader.cc has quite a bit of code duplication and is difficult to follow. In the course of making some other improvements to this code I am going to reorganize and clean things up. PR coming shortly
Reporter: Wes McKinney / @wesm
Assignee: Wes McKinney / @wesm
Related issues:
- [Python] Support reading Parquet binary/string columns directly as DictionaryArray (is depended upon by)
PRs and other links:
Note: This issue was originally created as ARROW-6065. Please see the migration documentation for further details.