[HBASE-18025] CatalogJanitor should collect outdated RegionStates from the AM

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.4.0, 1.3.2, 2.0.0, 1.2.7
• Component/s: read replicas
• Assignee: Esteban Gutierrez
• Reporter: Esteban Gutierrez
• Created: 10/May/17 21:41
• Updated: 01/Aug/18 06:23
• Resolved: 11/Aug/17 19:43

Description

I don't think this will matter on the long run for HBase 2, but at least in branch-1 and the current master we keep in multiple places copies of the region states in the master and this copies include information like the HRI. A problem that we have observed is when region replicas are being used and there is a split, the region replica from parent doesn't get collected from the region states and when the balancer tries to assign the old parent region replica, this will cause the RegionServer to create a new HRI with the details of the parent causing an inconstancy (see HBASE-18024).

Issue Links

• Is contained by: HBASE-18223 Track the effort to improve/bug fix read replica feature