[YARN-3132] RMNodeLabelsManager should remove node from node-to-label mapping when node becomes deactivated

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.7.0
• Component/s: api, client, resourcemanager
• Target Version/s: 2.7.0
• Hadoop Flags: Reviewed
• Assignee: Wangda Tan
• Reporter: Wangda Tan
• Created: 04/Feb/15 00:28
• Updated: 10/Apr/15 20:09
• Resolved: 18/Feb/15 19:53

Description

Using an example to explain:
1) Admin specify host1 has label=x
2) node=host1:123 registered
3) Get node-to-label mapping, return host1/host1:123
4) node=host1:123 unregistered
5) Get node-to-label mapping, still returns host1:123

Probably we should remove host1:123 when it becomes deactivated and no directly label assigned to it (directly assign means admin specify host1:123 has x instead of host1 has x).