[HBASE-10199] Improve rolling restart latency

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 0.94.14, 0.98.1, 0.99.0, 0.96.1.1
• Component/s: scripts
• Assignee: Unassigned
• Reporter: Jean-Marc Spaggiari
• Created: 18/Dec/13 18:20
• Updated: 17/Jun/22 15:33
• Resolved: 17/Jun/22 15:33

Description

HBASE-10049 introduced a 20 seconds delay in the region_mover script to make sure server is online before starting the transfer. On big cluster, this can add more than 1 hour to the total time. We need to find a way to make 100% sure the server is online without having to wait for those 20 seconds.