[HBASE-16025] Cache table state to reduce load on META

• Type: Improvement
• Status: Open
• Priority: Critical
• Resolution: Unresolved
• Fix Version/s: 3.0.0-beta-2
• Component/s: Client
• Tags: performance
• Assignee: Gary Helmling
• Reporter: Gary Helmling
• Created: 14/Jun/16 22:43
• Updated: 16/Dec/23 09:45

Description

HBASE-12035 moved keeping table enabled/disabled state from ZooKeeper into hbase:meta. When we retry operations on the client, we check table state in order to return a specific message if the table is disabled. This means that in master we will be going back to meta for every retry, even if a region's location has not changed. This is going to cause performance issues when a cluster is already loaded, ie. in cases where regionservers may be returning CallQueueTooBigException.