[HADOOP-9371] Define Semantics of FileSystem more rigorously

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2.0, 3.0.0-alpha1
• Fix Version/s: 2.5.0
• Component/s: fs
• Assignee: Steve Loughran
• Reporter: Steve Loughran
• Created: 06/Mar/13 15:08
• Updated: 12/May/16 18:25
• Resolved: 03/Jul/14 13:04

Description

The semantics of FileSystem and FileContext are not completely defined in terms of

1. core expectations of a filesystem
2. consistency requirements.
3. concurrency requirements.
4. minimum scale limits

Furthermore, methods are not defined strictly enough in terms of their outcomes and failure modes.

The requirements and method semantics should be defined more strictly.

Issue Links

• is related to: HADOOP-8545 Filesystem Implementation for OpenStack Swift
• is related to: HDFS-4849 Enable retries for create and append operations.
• relates to: HADOOP-9652 Allow RawLocalFs#getFileLinkStatus to fill in the link owner and mode if requested