[HADOOP-19158] S3A: Support ByteBufferPositionedReadable through vector IO

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.4.0
• Component/s: fs, fs/s3
• Labels: pull-request-available
• Assignee: Steve Loughran
• Reporter: Steve Loughran
• Created: 25/Apr/24 17:55
• Updated: 28/Apr/24 16:16

Description

Make it easy for any stream with vector io to support ByteBufferPositionedReadable

Specifically, ByteBufferPositionedReadable.readFully()

is exactly a single range read so is easy to read.

the simpler read() call which can return less isn't part of the vector API.
Proposed: invoke the readFully() but convert an EOFException to -1

Issue Links

• links to: GitHub Pull Request #6773