[HADOOP-321] DatanodeInfo refactoring

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.5.0
• Assignee: Konstantin Shvachko
• Reporter: Konstantin Shvachko
• Created: 23/Jun/06 08:08
• Updated: 08/Jul/09 16:41
• Resolved: 26/Jul/06 06:56

Description

I'm trying to refactor some name node classes, which seem to be similar.
So DatanodeInfo is a public api now for purely external ( to name node) use.
The name node class that stores information about data nodes including the
set of its blocks is called DatanodeDescriptor.
The DatanodeReport is removed since it was a variation of DatanodeInfo.
Previously DatanodeInfo and DatanodeDescriptor were the same class, and
DatanodeReport was used for reporting node statistics only.
This is a preparation step for HADOOP-306.