Bug 1527067

Summary: Null pointer exception after removing disk from VM
Product: [oVirt] ovirt-engine Reporter: Yosi Ben Shimon <ybenshim>
Component: BLL.StorageAssignee: Tal Nisan <tnisan>
Status: CLOSED CURRENTRELEASE QA Contact: Yosi Ben Shimon <ybenshim>
Severity: medium Docs Contact:
Priority: unspecified    
Version: futureCC: aefrat, bugs, lveyde, tnisan
Target Milestone: ovirt-4.2.1Flags: rule-engine: ovirt-4.2+
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
Whiteboard:
Fixed In Version: ovirt-engine-4.2.1.1 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2018-02-12 11:48:58 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: Storage RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
engine and vdsm logs
none
engine log none

Description Yosi Ben Shimon 2017-12-18 13:14:12 UTC 
Description of problem:
Got 'null pointer exception' after removing a disk from VM.
It happened once and couldn't reproduce it.

Version-Release number of selected component (if applicable):
ovirt-engine-4.2.0.2-0.1.el7.noarch
vdsm-4.20.9.2-1.el7ev.x86_64

engine log:

2017-12-18 11:20:23,232+02 INFO  [org.ovirt.engine.core.bll.tasks.AsyncTaskManager] (EE-ManagedThreadFactory-engine-Thread-91006) [3966a342-7521-4051-b42f-dc89d5e7547a] Adding task 'd7450c68-a1ff-4b8c-9830-d5514217498b' (Parent Command 'RemoveDisk', Parameters Type 'org.ovirt.engine.core.common.asynctasks.AsyncTaskParameters'), polling hasn't started yet..
2017-12-18 11:20:23,716+02 ERROR [org.ovirt.engine.core.bll.storage.disk.GetAllDisksByVmIdQuery] (default task-10) [708500a5-321f-4ec7-860a-0fb7b4bba9bb] Query 'GetAllDisksByVmIdQuery' failed: null
2017-12-18 11:20:23,716+02 ERROR [org.ovirt.engine.core.bll.storage.disk.GetAllDisksByVmIdQuery] (default task-10) [708500a5-321f-4ec7-860a-0fb7b4bba9bb] Exception: java.lang.NullPointerException
	at org.ovirt.engine.core.common.businessentities.storage.BaseDisk.lambda$setDiskVmElements$0(BaseDisk.java:87) [common.jar:]
	at java.util.stream.Collectors.lambda$toMap$58(Collectors.java:1320) [rt.jar:1.8.0_151]
	at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169) [rt.jar:1.8.0_151]
	at java.util.Collections$2.tryAdvance(Collections.java:4717) [rt.jar:1.8.0_151]
...

How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:
The disk has been removed by threw an error.

Expected results:


Additional info:
Comment 1 Yosi Ben Shimon 2017-12-18 13:49:30 UTC 
Created attachment 1369519 [details]
engine and vdsm logs
Comment 2 Avihai 2018-01-07 12:08:32 UTC 
Issue reproduced again , added Engine log .

My scenario:
1) VM with 4 disks in 'Down' state:

• 1 OS 
• 1 100G raw
• 1 10G IDE preallocated
• 2G thin

2) remove all disks except OS disk 

Exception  java.lang.NullPointerException occurs at Engine log although disks are removed :

Engine log:
2018-01-07 11:05:56,450+02 INFO  [org.ovirt.engine.core.bll.storage.disk.DetachDiskFromVmCommand] (EE-ManagedThreadFactory-engine-Thread-1084) [9642e9d8-37e7-47fb-96cc-bd20d2397278] Running command: DetachDiskFromVmCommand internal: false. Entities affected :  ID: 3139a307-f95e-4979-b70a-2be214fb8efc Type: VMAction group CONFIGURE_VM_STORAGE with role type USE
2018-01-07 11:05:56,513+02 ERROR [org.ovirt.engine.core.bll.storage.disk.GetAllDisksByVmIdQuery] (default task-4) [3431aee2-5b18-41c8-8e09-6d7596e3804b] Query 'GetAllDisksByVmIdQuery' failed: null
2018-01-07 11:05:56,513+02 ERROR [org.ovirt.engine.core.bll.storage.disk.GetAllDisksByVmIdQuery] (default task-4) [3431aee2-5b18-41c8-8e09-6d7596e3804b] Exception: java.lang.NullPointerException
	at org.ovirt.engine.core.common.businessentities.storage.BaseDisk.lambda$setDiskVmElements$0(BaseDisk.java:87) [common.jar:]
	at java.util.stream.Collectors.lambda$toMap$58(Collectors.java:1320) [rt.jar:1.8.0_151]
	at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169) [rt.jar:1.8.0_151]
	at java.util.Collections$2.tryAdvance(Collections.java:4717) [rt.jar:1.8.0_151]
	at java.util.Collections$2.forEachRemaining(Collections.java:4725) [rt.jar:1.8.0_151]
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) [rt.jar:1.8.0_151]
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) [rt.jar:1.8.0_151]
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) [rt.jar:1.8.0_151]
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) [rt.jar:1.8.0_151]
	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) [rt.jar:1.8.0_151]
	at org.ovirt.engine.core.common.businessentities.storage.BaseDisk.setDiskVmElements(BaseDisk.java:87) [common.jar:]
	at org.ovirt.engine.core.bll.storage.disk.GetAllDisksByVmIdQuery.executeQueryCommand(GetAllDisksByVmIdQuery.java:46) [bll.jar:]
	at org.ovirt.engine.core.bll.QueriesCommandBase.executeCommand(QueriesCommandBase.java:106) [bll.jar:]
	at org.ovirt.engine.core.dal.VdcCommandBase.execute(VdcCommandBase.java:33) [dal.jar:]
	at org.ovirt.engine.core.bll.executor.DefaultBackendQueryExecutor.execute(DefaultBackendQueryExecutor.java:14) [bll.jar:]
	at org.ovirt.engine.core.bll.Backend.runQueryImpl(Backend.java:579) [bll.jar:]
	at org.ovirt.engine.core.bll.Backend.runQuery(Backend.java:548) [bll.jar:]
	at sun.reflect.GeneratedMethodAccessor109.invoke(Unknown Source) [:1.8.0_151]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_151]
	at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_151]
	at org.jboss.as.ee.component.ManagedReferenceMethodInterceptor.processInvocation(ManagedReferenceMethodInterceptor.java:52)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:509)
	at org.jboss.as.weld.ejb.DelegatingInterceptorInvocationContext.proceed(DelegatingInterceptorInvocationContext.java:92) [wildfly-weld-ejb-7.1.0.GA-redhat-11.jar:7.1.0.GA-redhat-11]
	at org.jboss.weld.interceptor.proxy.WeldInvocationContext.interceptorChainCompleted(WeldInvocationContext.java:98) [weld-core-impl.jar:2.4.3.Final-redhat-1]
	at org.jboss.weld.interceptor.proxy.WeldInvocationContext.proceed(WeldInvocationContext.java:117) [weld-core-impl.jar:2.4.3.Final-redhat-1]
	at org.ovirt.engine.core.common.di.interceptor.LoggingInterceptor.apply(LoggingInterceptor.java:12) [common.jar:]
	at sun.reflect.GeneratedMethodAccessor66.invoke(Unknown Source) [:1.8.0_151]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_151]
	at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_151]
	at org.jboss.weld.interceptor.reader.SimpleInterceptorInvocation$SimpleMethodInvocation.invoke(SimpleInterceptorInvocation.java:73) [weld-core-impl.jar:2.4.3.Final-redhat-1]
	at org.jboss.weld.interceptor.proxy.WeldInvocationContext.invokeNext(WeldInvocationContext.java:83) [weld-core-impl.jar:2.4.3.Final-redhat-1]
	at org.jboss.weld.interceptor.proxy.WeldInvocationContext.proceed(WeldInvocationContext.java:115) [weld-core-impl.jar:2.4.3.Final-redhat-1]
	at org.jboss.weld.bean.InterceptorImpl.intercept(InterceptorImpl.java:108) [weld-core-impl.jar:2.4.3.Final-redhat-1]
	at org.jboss.as.weld.ejb.DelegatingInterceptorInvocationContext.proceed(DelegatingInterceptorInvocationContext.java:82) [wildfly-weld-ejb-7.1.0.GA-redhat-11.jar:7.1.0.GA-redhat-11]
	at org.jboss.as.weld.interceptors.EjbComponentInterceptorSupport.delegateInterception(EjbComponentInterceptorSupport.java:60)
	at org.jboss.as.weld.interceptors.Jsr299BindingsInterceptor.delegateInterception(Jsr299BindingsInterceptor.java:76)
	at org.jboss.as.weld.interceptors.Jsr299BindingsInterceptor.doMethodInterception(Jsr299BindingsInterceptor.java:88)
	at org.jboss.as.weld.interceptors.Jsr299BindingsInterceptor.processInvocation(Jsr299BindingsInterceptor.java:101)
	at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:63)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:509)
	at org.ovirt.engine.core.bll.interceptors.CorrelationIdTrackerInterceptor.aroundInvoke(CorrelationIdTrackerInterceptor.java:13) [bll.jar:]
	at sun.reflect.GeneratedMethodAccessor105.invoke(Unknown Source) [:1.8.0_151]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_151]
	at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_151]
	at org.jboss.as.ee.component.ManagedReferenceLifecycleMethodInterceptor.processInvocation(ManagedReferenceLifecycleMethodInterceptor.java:89)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.as.ejb3.component.invocationmetrics.ExecutionTimeInterceptor.processInvocation(ExecutionTimeInterceptor.java:43) [wildfly-ejb3-7.1.0.GA-redhat-11.jar:7.1.0.GA-redhat-11]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.as.ee.concurrent.ConcurrentContextInterceptor.processInvocation(ConcurrentContextInterceptor.java:45) [wildfly-ee-7.1.0.GA-redhat-11.jar:7.1.0.GA-redhat-11]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.invocation.InitialInterceptor.processInvocation(InitialInterceptor.java:40)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:53)
	at org.jboss.as.ee.component.interceptors.ComponentDispatcherInterceptor.processInvocation(ComponentDispatcherInterceptor.java:52)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.as.ejb3.component.singleton.SingletonComponentInstanceAssociationInterceptor.processInvocation(SingletonComponentInstanceAssociationInterceptor.java:53) [wildfly-ejb3-7.1.0.GA-redhat-11.jar:7.1.0.GA-redhat-11]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInNoTx(CMTTxInterceptor.java:264) [wildfly-ejb3-7.1.0.GA-redhat-11.jar:7.1.0.GA-redhat-11]
	at org.jboss.as.ejb3.tx.CMTTxInterceptor.supports(CMTTxInterceptor.java:379) [wildfly-ejb3-7.1.0.GA-redhat-11.jar:7.1.0.GA-redhat-11]
	at org.jboss.as.ejb3.tx.CMTTxInterceptor.processInvocation(CMTTxInterceptor.java:244) [wildfly-ejb3-7.1.0.GA-redhat-11.jar:7.1.0.GA-redhat-11]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:509)
	at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke(AbstractEJBRequestScopeActivationInterceptor.java:73) [weld-core-impl.jar:2.4.3.Final-redhat-1]
	at org.jboss.as.weld.ejb.EjbRequestScopeActivationInterceptor.processInvocation(EjbRequestScopeActivationInterceptor.java:89)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41) [wildfly-ejb3-7.1.0.GA-redhat-11.jar:7.1.0.GA-redhat-11]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.as.ejb3.component.invocationmetrics.WaitTimeInterceptor.processInvocation(WaitTimeInterceptor.java:47) [wildfly-ejb3-7.1.0.GA-redhat-11.jar:7.1.0.GA-redhat-11]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.as.ejb3.security.SecurityContextInterceptor.processInvocation(SecurityContextInterceptor.java:100) [wildfly-ejb3-7.1.0.GA-redhat-11.jar:7.1.0.GA-redhat-11]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.as.ejb3.deployment.processors.StartupAwaitInterceptor.processInvocation(StartupAwaitInterceptor.java:22) [wildfly-ejb3-7.1.0.GA-redhat-11.jar:7.1.0.GA-redhat-11]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.as.ejb3.component.interceptors.ShutDownInterceptorFactory$1.processInvocation(ShutDownInterceptorFactory.java:64) [wildfly-ejb3-7.1.0.GA-redhat-11.jar:7.1.0.GA-redhat-11]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.as.ejb3.component.interceptors.LoggingInterceptor.processInvocation(LoggingInterceptor.java:67) [wildfly-ejb3-7.1.0.GA-redhat-11.jar:7.1.0.GA-redhat-11]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.invocation.ContextClassLoaderInterceptor.processInvocation(ContextClassLoaderInterceptor.java:60)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.invocation.InterceptorContext.run(InterceptorContext.java:438)
	at org.wildfly.security.manager.WildFlySecurityManager.doChecked(WildFlySecurityManager.java:609)
	at org.jboss.invocation.AccessCheckingInterceptor.processInvocation(AccessCheckingInterceptor.java:57)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
	at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:53)
	at org.jboss.as.ee.component.ViewService$View.invoke(ViewService.java:198)
	at org.jboss.as.ee.component.ViewDescription$1.processInvocation(ViewDescription.java:185)
	at org.jboss.as.ee.component.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:81)
	at org.ovirt.engine.core.common.interfaces.BackendLocal$$$view2.runQuery(Unknown Source) [common.jar:]
	at org.ovirt.engine.ui.frontend.server.gwt.GenericApiGWTServiceImpl.runQuery(GenericApiGWTServiceImpl.java:90)
	at org.ovirt.engine.ui.frontend.server.gwt.GenericApiGWTServiceImpl.runMultipleQueries(GenericApiGWTServiceImpl.java:121)
	at sun.reflect.GeneratedMethodAccessor118.invoke(Unknown Source) [:1.8.0_151]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_151]
	at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_151]
	at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:587)
	at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:333)
	at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:303)
	at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:373)
	at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) [jboss-servlet-api_3.1_spec.jar:1.0.0.Final-redhat-1]
	at org.ovirt.engine.ui.frontend.server.gwt.GenericApiGWTServiceImpl.service(GenericApiGWTServiceImpl.java:78)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec.jar:1.0.0.Final-redhat-1]
	at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)
	at org.ovirt.engine.core.utils.servlet.HeaderFilter.doFilter(HeaderFilter.java:94) [utils.jar:]
	at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
	at org.ovirt.engine.core.utils.servlet.CachingFilter.doFilter(CachingFilter.java:133) [utils.jar:]
	at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
	at org.ovirt.engine.core.branding.BrandingFilter.doFilter(BrandingFilter.java:73) [branding.jar:]
	at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
	at org.ovirt.engine.core.utils.servlet.LocaleFilter.doFilter(LocaleFilter.java:65) [utils.jar:]
	at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
	at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
	at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
	at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
	at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
	at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at io.undertow.security.handlers.AuthenticationConstraintHandler.handleRequest(AuthenticationConstraintHandler.java:53)
	at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
	at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
	at io.undertow.servlet.handlers.security.ServletSecurityConstraintHandler.handleRequest(ServletSecurityConstraintHandler.java:59)
	at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
	at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
	at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
	at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:292)
	at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81)
	at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138)
	at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)
	at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
	at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
	at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
	at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272)
	at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
	at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:104)
	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:326)
	at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:812)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [rt.jar:1.8.0_151]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [rt.jar:1.8.0_151]
	at java.lang.Thread.run(Thread.java:748) [rt.jar:1.8.0_151]
Comment 3 Avihai 2018-01-07 12:09:40 UTC 
Created attachment 1378050 [details]
engine log

Engine Log attached , Issue occurred on Engine 4.2.0.2-0.1
Comment 4 Tal Nisan 2018-01-08 11:35:34 UTC 
This issue will not be easy to reproduce in order to verify, best way it to interfere with one of the threads by using a breakpoint, contact me if you would like help verifying
Comment 5 Yosi Ben Shimon 2018-01-18 15:27:34 UTC 
I verified this bug according to Avihai's steps (comment #2) and it's verified.
But i think we should talk in order to try to reproduce it using the way you mentioned in comment #4.
Comment 6 Yosi Ben Shimon 2018-01-22 13:21:21 UTC 
Tested using:
ovirt-engine-4.2.1.2-0.1.el7.noarch

Moving to VERIFIED
Comment 7 Sandro Bonazzola 2018-02-12 11:48:58 UTC 
This bugzilla is included in oVirt 4.2.1 release, published on Feb 12th 2018.

Since the problem described in this bug report should be
resolved in oVirt 4.2.1 release, it has been closed with a resolution of CURRENT RELEASE.

If the solution does not work for you, please open a new bug report.