[ARROW-4543] [C#] Update Flat Buffers code to latest version

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.13.0
• Component/s: C#
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/21091
• Assignee: Eric Erhardt
• Reporter: Eric Erhardt
• Created: 12/Feb/19 15:07
• Updated: 11/Jan/23 07:34
• Resolved: 18/Feb/19 22:30

Description

In order to support zero-copy reads, we should update to the latest Google Flat Buffers code. A recent change now allows C# support for directly reading and writing to memory other than byte[] which will make reading native memory using `Memory<byte>` possible.

Along with this update, we should mark the flat buffers types as `internal`, since they are an implementation detail of the library. From an API perspective, it is confusing to see multiple public types named "Schema", "Field", "RecordBatch" etc.

Issue Links

• links to: GitHub Pull Request #3637