[YARN-5529] Create new DiskValidator class with metrics

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.9.0, 3.0.0-alpha2
• Component/s: nodemanager
• Labels: supportability
• Hadoop Flags: Reviewed
• Assignee: Yufei Gu
• Reporter: Ray Chiang
• Created: 16/Aug/16 17:39
• Updated: 03/Jan/17 20:52
• Resolved: 03/Jan/17 20:15

Description

With really large clusters, the basic DiskValidator isn't sufficient for some of the less common types of disk failures.

Look at a new DiskValidator that could do one or more of the following:

• Add new tests to find more problems
• Add new metrics to at least characterize problems that we haven't predicted