[HBASE-25358] meta replica regions are assigned to the same region server during SCP.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Invalid
• Affects Version/s: 2.4.0
• Component/s: read replicas
• Assignee: Huaxiang Sun
• Reporter: Huaxiang Sun
• Created: 04/Dec/20 05:45
• Updated: 11/Dec/20 22:37
• Resolved: 11/Dec/20 22:37

Description

When running 2.4.0 RC1 with meta replica enabled, during SCP, meta replica regions are assigned to the same region server. I think the reason is that SCP uses round robin algo to assign meta replicas and do not exclude  region servers hosting replica regions. This is not a new issue.