[HDFS-12570] [SPS]: Refactor Co-ordinator datanode logic to track the block storage movements

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: HDFS-10285, 3.2.0
• Component/s: datanode, namenode
• Target Version/s: HDFS-10285
• Hadoop Flags: Reviewed
• Assignee: Rakesh Radhakrishnan
• Reporter: Rakesh Radhakrishnan
• Created: 30/Sep/17 05:53
• Updated: 13/Aug/18 05:39
• Resolved: 13/Oct/17 00:19

Description

This task is to refactor the C-DN block storage movements. Basically, the idea is to move the scheduling and tracking logic to Namenode rather than at the special C-DN. Please refer the discussion with andrew.wang to understand the background and the necessity of refactoring.