[MAPREDUCE-3353] Need a RM->AM channel to inform AMs about faulty/unhealthy/lost nodes

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.23.0
• Fix Version/s: 2.0.0-alpha
• Component/s: applicationmaster, mrv2, resourcemanager
• Target Version/s: 0.23.3
• Assignee: Bikas Saha
• Reporter: Vinod Kumar Vavilapalli
• Created: 04/Nov/11 13:14
• Updated: 10/Mar/15 04:31
• Resolved: 26/Mar/12 05:48

Description

When a node gets lost or turns faulty, AM needs to know about that event so that it can take some action like for e.g. re-executing map tasks whose intermediate output live on that faulty node.

Issue Links

• blocks: MAPREDUCE-3921 MR AM should act on the nodes liveliness information when nodes go up/down/unhealthy
• is depended upon by: MAPREDUCE-3958 RM: Remove RMNodeState and replace it with NodeState