[HADOOP-12184] Remove unused Linux-specific constants in NativeIO

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.0
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: native

Environment

Solaris

• Target Version/s: 2.8.0
• Assignee: Martin Walsh
• Reporter: Martin Walsh
• Created: 03/Jul/15 15:31
• Updated: 30/Aug/16 01:25
• Resolved: 22/Jul/15 18:36

Description

The POSIX subclass in NativeIO contains the following constants that are not defined in POSIX:

O_ASYNC, O_FSYNC, O_NDELAY

Stat.S_IFWHT

These constants are not used within Hadoop, as far as I could tell. As they are not part of the POSIX specification, they should be removed as part of an effort to create portable code.

Issue Links

• is required by: HADOOP-7824 NativeIO.java flags and identifiers must be set correctly for each platform, not hardcoded to their Linux values