[CLOUDSTACK-7833] VM Async work jobs log "Was unable to find lock for the key vm_instance" errors at warn

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 4.3.0
• Fix Version/s: 4.5.0
• Component/s: Management Server
• Security Level: Public (Anyone can view this level - this is the default.)
• Assignee: Min Chen
• Reporter: Min Chen
• Created: 03/Nov/14 18:07
• Updated: 23/Jan/15 12:10
• Resolved: 04/Nov/14 00:02

Description

When Deploy VM API is processed by the VM orchestration logic, VM Work jobs are created and put in the async job queue.

While processing these jobs, log shows a lot of WARN statements as follows

2014-10-28 08:09:13,633 DEBUG [o.a.c.f.j.i.AsyncJobManagerImpl] (API-Job-Executor-100:ctx-e10c4339 job-464 ctx-4d5301e4) Sync job-726 execution on object VmWorkJobQueue.286
2014-10-28 08:09:13,640 WARN [c.c.u.d.Merovingian2] (API-Job-Executor-100:ctx-e10c4339 job-464 ctx-4d5301e4) Was unable to find lock for the key vm_instance286 and thread id 1581663601

2014-10-28 08:18:32,003 DEBUG [o.a.c.f.j.i.AsyncJobManagerImpl] (API-Job-Executor-100:ctx-e10c4339 job-464 ctx-4d5301e4) Sync job-1332 execution on object VmWorkJobQueue.286
2014-10-28 08:18:32,006 WARN [c.c.u.d.Merovingian2] (API-Job-Executor-100:ctx-e10c4339 job-464 ctx-4d5301e4) Was unable to find lock for the key vm_instance286 and thread id 1581663601