[PARQUET-835] [C++] Add option to parquet::arrow to read columns in parallel using a thread pool

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: cpp-1.0.0
• Component/s: parquet-cpp
• Assignee: Wes McKinney
• Reporter: Wes McKinney
• Created: 22/Jan/17 17:44
• Updated: 23/Jun/24 03:28
• Resolved: 23/Jan/17 17:55

Description

For Parquet file reading that is not IO-bound, we can go faster by reading columns in multiple threads (assuming underlying the IO source is threadsafe). The code will be very similar to that in https://github.com/apache/arrow/blob/master/python/src/pyarrow/adapters/pandas.cc#L1193