[HBASE-20368] Fix RIT stuck when a rsgroup has no online servers but AM's pendingAssginQueue is cleared

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 3.0.0-alpha-1, 2.3.0, 2.0.6, 2.2.1, 2.1.6
• Component/s: rsgroup
• Hadoop Flags: Reviewed
• Assignee: Xiaolin Ha
• Reporter: Xiaolin Ha
• Created: 09/Apr/18 08:27
• Updated: 17/Jul/19 23:59
• Resolved: 17/Jul/19 14:32

Description

This error can be reproduced by shutting down all servers in a rsgroups and starting them soon afterwards.
The regions on this rsgroup will be reassigned, but there is no available servers of this rsgroup.
They will be added to AM's pendingAssginQueue, which AM will clear regardless of the result of assigning in this case.

Issue Links

• links to: GitHub Pull Request #354
• links to: Review Board (branch-2)
• links to: Review Board (branch-2.0)
• links to: Review Board (branch-2.1)