[HBASE-3322] HLog sync slowdown under heavy load with HBASE-2467

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Won't Fix
• Affects Version/s: 0.90.0
• Fix Version/s: 0.92.0
• Component/s: io, regionserver
• Assignee: Unassigned
• Reporter: Jonathan Gray
• Created: 09/Dec/10 06:55
• Updated: 20/Nov/15 12:42
• Resolved: 21/Mar/11 21:53

Description

Testing HBASE-2467 and HDFS-895 on 100 node cluster w/ a heavy increment workload we experienced significant slowdown.

Stack traces show that most threads are on HLog.updateLock.