[ARROW-3212] [C++] Create deterministic IPC metadata

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.11.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/19556
• Assignee: Wes McKinney
• Reporter: Wes McKinney
• Created: 11/Sep/18 00:48
• Updated: 11/Jan/23 07:26
• Resolved: 25/Sep/18 08:16

Description

Currently, the amount of padding bytes written after the IPC metadata header depends on the current position of the OutputStream passed. So if the message begins on an unaligned (not multiple of 8) offset, then the content of the metadata will be different than if it did. This seems like a leaky abstraction – aligning the stream should probably be handled separately from writing the IPC protocol.

Issue Links

• links to: GitHub Pull Request #2615