[ARROW-11681] [Rust] IPC writers shouldn't unwrap in destructors

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 3.0.1, 4.0.0
• Component/s: Rust
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/27544
• Assignee: Steven Fackler
• Reporter: Steven Fackler
• Created: 18/Feb/21 00:38
• Updated: 11/Jan/23 08:21
• Resolved: 20/Feb/21 13:55

Description

FileWriter and StreamWriter call `self.finish().unwrap()` in their `Drop` implementations if the write has not already been finished. However, a common reason for the write to not be finished is an earlier IO error on the underlying stream. In that case, the destructor will panic, which is not desired.

Issue Links

• links to: GitHub Pull Request #9520