[PARQUET-1519] [C++] Remove use of "extern template class" from parquet/column_reader.h

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: cpp-4.0.0
• Component/s: parquet-cpp
• Labels: pull-request-available
• Assignee: Wes McKinney
• Reporter: Wes McKinney
• Created: 29/Jan/19 21:13
• Updated: 30/Jan/19 15:45
• Resolved: 30/Jan/19 15:45

Description

These declarations are doing little to improve compile times, and they produce esoteric linking issues. Like parquet/encoding.h, I'll also refactor these classes into virtual interfaces and move the implementation into column_reader.cc

Issue Links

• links to: GitHub Pull Request #3525