[HBASE-15044] Region normalization should be allowed when underlying namespace has quota

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: Balancer
• Hadoop Flags: Reviewed
• Assignee: Ted Yu
• Reporter: Ted Yu
• Created: 28/Dec/15 19:29
• Updated: 06/Jan/16 19:42
• Resolved: 30/Dec/15 18:06

Description

Currently when namespace has quota, HMaster#normalizeRegions() skips the tables in the namespace.

However, performing region merge(s) wouldn't violate quota constraint.
For region split, NamespaceAuditor#checkQuotaToSplitRegion() can be called to check whether quota is about to be exceeded. If not, region split plan can still be executed.

Issue Links

• relates to: HBASE-15056 Split fails with KeeperException$NoNodeException when namespace quota is enabled