[ARROW-1494] [C++] Document that shared_ptr returned by RecordBatch::column needs to be retained

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.7.0
• Component/s: C++
• External issue URL: https://github.com/apache/arrow/issues/17513
• Assignee: Wes McKinney
• Reporter: Wes McKinney
• Created: 08/Sep/17 03:35
• Updated: 11/Jan/23 07:15
• Resolved: 08/Sep/17 15:04

Description

I ran into an issue where a now-temporary column was being deferenced, causing a segfault. In older versions of Arrow, the RecordBatch internally retains boxed arrays. We might separately consider returning to this internal data model even though it results in worse IPC performance in some cases.