[ARROW-17825] [C++] Allow to write several tables successively with ORCFileWriter::Write method

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 11.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/pull/14219

Language

C++

• Assignee: Louis Calot
• Reporter: Louis Calot
• Created: 23/Sep/22 09:02
• Updated: 11/Jan/23 11:55
• Resolved: 15/Nov/22 18:21

Description

I had the need to write an ORC file little by little, so as to not consume too much memory.
Following this discussion, it appeared that the API did not seemed to prevent doing that, but that the internal implementation was not reusing the writer accordingly.

This PR makes the needed changes to reuse the "writer_" correctly.

I do not think that the preceding behaviour was correct, as calling several time the "Write" method would lead to incorrect ORC files.

Issue Links

• links to: GitHub Pull Request #14219