[HBASE-4231] Flush regions in multiple threads

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 0.94.0
• Component/s: regionserver
• Assignee: Unassigned
• Reporter: Todd Lipcon
• Created: 19/Aug/11 09:16
• Updated: 12/Jun/22 19:05
• Resolved: 11/Jan/13 08:19

Description

As servers get beefier, it makes less and less sense to have only a single thread do flushes at a time. In watching an insert-only benchmark run, HBase isn't currently disk, network, or CPU-bound – it seems it's bound only by the rate at which flushes and compactions get processed. Increasing the threading a bit here should increase total disk/network throughput utilization.