[HBASE-18492] [AMv2] Embed code for selecting highest versioned region server for system table regions in AssignmentManager.processAssignQueue()

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.0.0
• Component/s: amv2
• Hadoop Flags: Reviewed
• Release Note: Favors new servers over older versions when assigning system table regions (more to follow in this area; i.e. changes in the AM itself).
• Assignee: Umesh Agashe
• Reporter: Umesh Agashe
• Created: 01/Aug/17 18:38
• Updated: 01/Aug/18 06:21
• Resolved: 08/Aug/17 21:04

Description

Embed logic of selecting highest versioned region server for system table regions in AssignmentManager.processAssignQueue(). This way from any section of the code when system table regions are re/assigned, only highest versioned RS are candidates for target servers.

Issue Links

• relates to: HBASE-18366 Fix flaky test hbase.master.procedure.TestServerCrashProcedure#testRecoveryAndDoubleExecutionOnRsWithMeta
• links to: Reviewboard