[CLOUDSTACK-3225] Multiple NPEs when cloudstack-management service is restarted with incomplete tasks/notifications.

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 4.2.0
• Fix Version/s: 4.4.3
• Component/s: Management Server
• Security Level: Public (Anyone can view this level - this is the default.)
• Environment: master-6-17-stable build
• Assignee: Prachi Damle
• Reporter: manasaveloori
• Created: 27/Jun/13 06:54
• Updated: 27/Apr/15 10:48
• Resolved: 27/Apr/15 10:48

Description

Steps:
1. Have a CS setup with any zone.
2. Create any task like rebooting the instance/ router VM/VPC restart etc..
3. While the task is incomplete try to restart the management service.

Observation:

Observed multiple NPEs in the MS log.

2013-06-27 17:26:26,267 ERROR [cloud.api.ApiServlet] (catalina-exec-4:null) unknown exception writing api response
java.lang.NullPointerException
at com.cloud.user.AccountManagerImpl.getSystemUser(AccountManagerImpl.java:309)
at com.cloud.user.AccountManagerImpl.getSystemUser(AccountManagerImpl.java:150)
at com.cloud.api.ApiServlet.processRequest(ApiServlet.java:238)
at com.cloud.api.ApiServlet.doGet(ApiServlet.java:66)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:555)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11NioProcessor.process(Http11NioProcessor.java:889)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:721)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:2268)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:679)
2013-06-27 17:26:26,283 DEBUG [cloud.api.ApiServlet] (catalina-exec-4:null) ===END=== 10.252.192.69 – GET command=queryAsyncJobResult&jobId=459114c9-5e2a-4cf0-8267-df2a179499c2&response=json&sessionkey=nJAZqwBB2k8KRNoM%2FpKQPK4DZkg%3D&_=1372314733853
2013-06-27 17:26:29,277 DEBUG [cloud.api.ApiServlet] (catalina-exec-5:null) ===START=== 10.252.192.69 – GET command=queryAsyncJobResult&jobId=459114c9-5e2a-4cf0-8267-df2a179499c2&response=json&sessionkey=nJAZqwBB2k8KRNoM%2FpKQPK4DZkg%3D&_=1372314736852
2013-06-27 17:26:29,278 ERROR [cloud.api.ApiServlet] (catalina-exec-5:null) unknown exception writing api response
java.lang.NullPointerException
at com.cloud.user.AccountManagerImpl.getSystemUser(AccountManagerImpl.java:309)
at com.cloud.user.AccountManagerImpl.getSystemUser(AccountManagerImpl.java:150)
at com.cloud.api.ApiServlet.processRequest(ApiServlet.java:238)
at com.cloud.api.ApiServlet.doGet(ApiServlet.java:66)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)

Attaching the MS log.