[ARROW-13139] [C++] ReadaheadGenerator cannot be safely copied/moved

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/28840
• Assignee: Weston Pace
• Reporter: Weston Pace
• Created: 22/Jun/21 03:34
• Updated: 11/Jan/23 08:31
• Resolved: 22/Jun/21 13:10

Description

The readahead generator is one of the older generators and it isn't using the newer style of encapsulating all of its state within a state struct & shared_ptr.  As a result, if it is copied or moved, then the result is unpredictable.

Issue Links

• links to: GitHub Pull Request #10569