[HBASE-15383] Load distribute across secondary read replicas for meta

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Component/s: Client
• Assignee: Ashu Pachauri
• Reporter: Ashu Pachauri
• Created: 03/Mar/16 01:50
• Updated: 27/Jul/22 19:15
• Resolved: 27/Jul/22 19:15

Description

Right now, we always hit the primary replica for meta and fallback to the secondary replicas in case of a timeout. This can hamper performance in scenarios where meta becomes a hot region e.g. cluster ramp up..clients dropping connections etc.

It's good to have a load distribution approach on meta's secondary replicas with fallback to primary if we read stale data.

Issue Links

• is fixed by: HBASE-25126 Add load balance logic in hbase-client to distribute read load over meta replica regions.