Bug 1679867

Summary:	UI exception seen in RHV-M (models.vms.UnitVmModel.$validate)
Product:	[oVirt] ovirt-engine	Reporter:	bipin <bshetty>
Component:	Frontend.WebAdmin	Assignee:	Kaustav Majumder <kmajumde>
Status:	CLOSED CURRENTRELEASE	QA Contact:	bipin <bshetty>
Severity:	high	Docs Contact:
Priority:	high
Version:	4.2.8	CC:	akrejcir, bugs, godas, gshereme, kmajumde, lsvaty, pagranat, rhs-bugs, sabose, sasundar, sgratch
Target Milestone:	ovirt-4.3.6	Flags:	pm-rhel: ovirt-4.3+
Target Release:	4.3.6
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	ovirt-engine-4.3.6	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1679863	Environment:
Last Closed:	2019-09-26 19:43:03 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Virt	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1679863

Description bipin 2019-02-22 05:26:32 UTC

+++ This bug was initially created as a clone of Bug #1679863 +++

Description of problem:
=======================
UI exception seen in the Hosted Engine.

Version-Release number of selected component (if applicable):
============================================================
ovirt-engine-4.3.0.4-0.1.el7.noarch
rhvh-4.3.0.4-0.20190220.0+1

How reproducible:
=================
2/2


Steps to Reproduce:
===================
1.Deploy the RHHI 1.6 enviornment( RHV 4.3 + RHGS 3.4.3 )
2.Powered off the vm and restarted it
3.It failed to come up and then could see the UI exception popping up

Actual results:
===============
Exception seen

Expected results:
================
Exception shouldn't be seen


Additional info:
===============

--- Additional comment from RHEL Product and Program Management on 2019-02-22 05:09:55 UTC ---

This bug is automatically being proposed for RHHI-V 1.6 release at Red Hat Hyperconverged Infrastructure for Virtualization product, by setting the release flag 'rhiv‑1.6' to '?'.

If this bug should be proposed for a different release, please manually change the proposed release flag.

--- Additional comment from bipin on 2019-02-22 05:24:45 UTC ---

UI log:
=======
2019-02-22 09:47:18,819+05 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-219) [] Permutation name: 93F142F4D9B55F57C12620FDF860807F
2019-02-22 09:47:18,820+05 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-219) [] Uncaught exception: com.google.gwt.event.shared.UmbrellaException: Exception caught: (TypeError) : b is undefined
        at java.lang.Throwable.Throwable(Throwable.java:70) [rt.jar:1.8.0_191]
        at java.lang.RuntimeException.RuntimeException(RuntimeException.java:32) [rt.jar:1.8.0_191]
        at com.google.web.bindery.event.shared.UmbrellaException.UmbrellaException(UmbrellaException.java:64) [gwt-servlet.jar:]
        at com.google.gwt.event.shared.UmbrellaException.UmbrellaException(UmbrellaException.java:25) [gwt-servlet.jar:]
        at com.google.gwt.event.shared.HandlerManager.$fireEvent(HandlerManager.java:117) [gwt-servlet.jar:]
        at com.google.gwt.user.client.ui.Widget.$fireEvent(Widget.java:127) [gwt-servlet.jar:]
        at com.google.gwt.user.client.ui.Widget.fireEvent(Widget.java:127) [gwt-servlet.jar:]
        at com.google.gwt.event.dom.client.DomEvent.fireNativeEvent(DomEvent.java:110) [gwt-servlet.jar:]
        at com.google.gwt.user.client.ui.Widget.$onBrowserEvent(Widget.java:163) [gwt-servlet.jar:]
        at com.google.gwt.user.client.ui.Widget.onBrowserEvent(Widget.java:163) [gwt-servlet.jar:]
        at com.google.gwt.user.client.DOM.dispatchEvent(DOM.java:1415) [gwt-servlet.jar:]
        at com.google.gwt.user.client.impl.DOMImplStandard.dispatchEvent(DOMImplStandard.java:312) [gwt-servlet.jar:]
        at com.google.gwt.core.client.impl.Impl.apply(Impl.java:236) [gwt-servlet.jar:]
        at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:275) [gwt-servlet.jar:]
        at Unknown.Su/<(https://hostedenginesm3.lab.eng.blr.redhat.com/ovirt-engine/webadmin/?locale=en_US)
        at Unknown.anonymous(Unknown)
Caused by: com.google.gwt.core.client.JavaScriptException: (TypeError) : b is undefined
        at com.google.gwt.event.shared.EventBus.$castFireEvent(EventBus.java:65) [gwt-servlet.jar:]
        at org.ovirt.engine.ui.uicommonweb.models.ValidationCompleteEvent.fire(ValidationCompleteEvent.java:27)
        at org.ovirt.engine.ui.uicommonweb.models.vms.UnitVmModel.$validate(UnitVmModel.java:2794)
        at org.ovirt.engine.ui.uicommonweb.models.templates.VmBaseListModel.$validateVm(VmBaseListModel.java:294)
        at org.ovirt.engine.ui.uicommonweb.models.vms.VmListModel.$preSavePhase3(VmListModel.java:1670)
        at org.ovirt.engine.ui.uicommonweb.models.vms.VmListModel.$preSavePhase2(VmListModel.java:1637)
        at org.ovirt.engine.ui.uicommonweb.models.vms.VmListModel.$preSave(VmListModel.java:1603)
        at org.ovirt.engine.ui.uicommonweb.models.vms.VmListModel.$executeCommand(VmListModel.java:2017)
        at org.ovirt.engine.ui.uicommonweb.models.vms.VmListModel.executeCommand(VmListModel.java:2017)
        at org.ovirt.engine.ui.uicommonweb.UICommand.$execute(UICommand.java:163)
        at org.ovirt.engine.ui.common.presenter.AbstractModelBoundPopupPresenterWidget.$lambda$4(AbstractModelBoundPopupPresenterWidget.java:306)
        at org.ovirt.engine.ui.common.presenter.AbstractModelBoundPopupPresenterWidget$lambda$4$Type.onClick(AbstractModelBoundPopupPresenterWidget.java:306)
        at com.google.gwt.event.dom.client.ClickEvent.dispatch(ClickEvent.java:55) [gwt-servlet.jar:]
        at com.google.gwt.event.shared.GwtEvent.dispatch(GwtEvent.java:76) [gwt-servlet.jar:]
        at com.google.web.bindery.event.shared.SimpleEventBus.$doFire(SimpleEventBus.java:173) [gwt-servlet.jar:]

Comment 2 bipin 2019-02-28 03:40:54 UTC

Increasing the severity to high since this seems to be a generic exception. The exception is seen when something fails or error's out in UI.
Also, if the failure is not resolved the exception keeps popping up.

Comment 4 bipin 2019-03-04 11:19:46 UTC

I see similar exception while doing remove brick operation .

Steps:
=====
1.Create a replica 3 (1*3) volume
2.Create vm's and pump IO to it.
3.Add bricks to the volume mentioned above, now its 2*3 
4.Start the rebalance 
5.Once the rebalance is completed,click on remove brick
6.Once the sync is  completed , go to remove brick icon and click commit.
7.Click on the volume where the brick were removed, exceptions pop up.


2019-03-04 16:26:41,212+05 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-2639) [] Permutation name: 504B4D619F980B291CB55B30720BC4CC
2019-03-04 16:26:41,212+05 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-2639) [] Uncaught exception: com.google.gwt.core.client.JavaScriptException: (TypeError) : b is 
null
        at com.google.gwt.i18n.shared.DateTimeFormat.$format(DateTimeFormat.java:761) [gwt-servlet.jar:]
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.StepWidget.StepWidget(StepWidget.java:59)
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.StepWidget.$lambda$0(StepWidget.java:76)
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.StepWidget$lambda$0$Type.accept(StepWidget.java:76)
        at java.util.ArrayList.$forEach(ArrayList.java:172) [rt.jar:1.8.0_191]
        at java.util.ArrayList.forEach(ArrayList.java:172) [rt.jar:1.8.0_191]
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.StepWidget.StepWidget(StepWidget.java:59)
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.StepWidget.StepWidget(StepWidget.java:55)
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.TaskWidget.$lambda$0(TaskWidget.java:80)
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.TaskWidget$lambda$0$Type.accept(TaskWidget.java:80)
        at java.util.ArrayList.$forEach(ArrayList.java:172) [rt.jar:1.8.0_191]
        at java.util.ArrayList.forEach(ArrayList.java:172) [rt.jar:1.8.0_191]
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.TaskWidget.TaskWidget(TaskWidget.java:53)
        at org.ovirt.engine.ui.webadmin.section.main.view.overlay.TasksView.$lambda$0(TasksView.java:45)
        at org.ovirt.engine.ui.webadmin.section.main.view.overlay.TasksView$lambda$0$Type.accept(TasksView.java:45)
        at java.util.ArrayList.$forEach(ArrayList.java:172) [rt.jar:1.8.0_191]
        at java.util.ArrayList.forEach(ArrayList.java:172) [rt.jar:1.8.0_191]
        at org.ovirt.engine.ui.webadmin.section.main.view.overlay.TasksView.$updateTaskStatus(TasksView.java:41)
        at org.ovirt.engine.ui.webadmin.section.main.presenter.overlay.TasksPresenterWidget$1.eventRaised(TasksPresenterWidget.java:66)
        at org.ovirt.engine.ui.uicompat.Event.$raise(Event.java:99)
        at org.ovirt.engine.ui.uicommonweb.models.SearchableListModel.$setItems(SearchableListModel.java:708)
        at org.ovirt.engine.ui.uicommonweb.models.events.TaskListModel.$lambda$2(TaskListModel.java:218)
        at org.ovirt.engine.ui.uicommonweb.models.events.TaskListModel$lambda$2$Type.onSuccess(TaskListModel.java:218)
        at org.ovirt.engine.ui.frontend.Frontend$1.$onSuccess(Frontend.java:227) [frontend.jar:]
        at org.ovirt.engine.ui.frontend.Frontend$1.onSuccess(Frontend.java:227) [frontend.jar:]
        at org.ovirt.engine.ui.frontend.communication.OperationProcessor$1.$onSuccess(OperationProcessor.java:133) [frontend.jar:]
        at org.ovirt.engine.ui.frontend.communication.OperationProcessor$1.onSuccess(OperationProcessor.java:133) [frontend.jar:]
        at org.ovirt.engine.ui.frontend.communication.GWTRPCCommunicationProvider$5$1.$onSuccess(GWTRPCCommunicationProvider.java:270) [frontend.jar:]
        at org.ovirt.engine.ui.frontend.communication.GWTRPCCommunicationProvider$5$1.onSuccess(GWTRPCCommunicationProvider.java:270) [frontend.jar:]
        at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:198) [gwt-servlet.jar:]
        at com.google.gwt.http.client.Request.$fireOnResponseReceived(Request.java:233) [gwt-servlet.jar:]
        at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:409) [gwt-servlet.jar:]
        at Unknown.onreadystatechange<(https://hostedenginesm3.lab.eng.blr.redhat.com/ovirt-engine/webadmin/?locale=en_US#volumes)
        at com.google.gwt.core.client.impl.Impl.apply(Impl.java:236) [gwt-servlet.jar:]
        at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:275) [gwt-servlet.jar:]
        at Unknown.Su/<(https://hostedenginesm3.lab.eng.blr.redhat.com/ovirt-engine/webadmin/?locale=en_US#volumes)
        at Unknown.anonymous(Unknown)

Comment 6 Sahina Bose 2019-03-21 11:59:10 UTC

Seems like an infra item. Greg, could you take a look?

Comment 7 Greg Sheremeta 2019-03-21 15:08:32 UTC

There are two unrelated NPEs.

1. StepWidget -- I'll fix.
2. something in UnitVmModel -- I need someone from virt to look, because I'm not familiar with that. @Andrej or Sharon, could one of you assist?

Comment 8 Sandro Bonazzola 2019-03-22 10:47:16 UTC

4.3.2 has been released a while ago, re-targeting to 4.3.3 for re-evaluation.

Comment 9 Greg Sheremeta 2019-03-23 12:03:05 UTC

(In reply to Greg Sheremeta from comment #7)
> There are two unrelated NPEs.
> 
> 1. StepWidget -- I'll fix.

https://gerrit.ovirt.org/98815


> 2. something in UnitVmModel -- I need someone from virt to look, because I'm
> not familiar with that. @Andrej or Sharon, could one of you assist?

Comment 10 Sharon Gratch 2019-03-31 17:07:23 UTC

(In reply to Greg Sheremeta from comment #9)
> 
> > 2. something in UnitVmModel -- I need someone from virt to look, because I'm
> > not familiar with that. @Andrej or Sharon, could one of you assist?


Need a similar environment for reproducing this NPE. 
Polina, do we you have such an environment as described in comment #0 for reproducing?

In addition, @bshetty can you please send the exact VM configuration that caused that exception?

Comment 11 Polina 2019-04-01 06:48:24 UTC

Sharon, unfortunately, our group has no such environment

Comment 12 Sharon Gratch 2019-04-01 11:44:22 UTC

@ bipin, do you have such an environment as described in comment #0 for reproducing this issue?

Comment 13 bipin 2019-04-02 04:07:14 UTC

Hi Sharon,

Right now i don't have such environment. But have seen such exceptions multiple times

Comment 14 Lukas Svaty 2019-07-16 11:16:49 UTC

Hi Bipin,

can you check this verification? We have a deadline for ONQA bugs today. If you need help let us know, and we can help or take over?

Thanks!

Comment 15 bipin 2019-07-17 05:52:06 UTC

Hi Lukas,

Will update the results shortly.

Comment 16 bipin 2019-07-17 10:42:55 UTC

Moving back the bug to assigned since the exception are still seen while performing the test mentioned in comment 4.


Steps:
=====
1.Create a replica 3 (1*3) volume
2.Create vm's and pump IO to it.
3.Add bricks to the volume mentioned above, now its 2*3 
4.Start the rebalance 
5.Once the rebalance is completed,click on remove brick
6.Once the sync is  completed , go to remove brick icon and click commit.
7.Click on the volume where the brick were removed, exceptions pop up.

Component version: 
=================
ovirt-engine-4.3.5.4-0.1.el7.noarch
ovirt-web-ui-1.5.3-1.el7ev.noarch


Snippet:
========
2019-07-17 16:00:11,768+05 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-42) [] Permutation name: ECB0017A77B1F0ABE452044584E93B7F
2019-07-17 16:00:11,769+05 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-42) [] Uncaught exception: com.google.gwt.core.client.JavaScriptException: (TypeError) : b is null
        at com.google.gwt.i18n.shared.DateTimeFormat.$format(DateTimeFormat.java:761) [gwt-servlet.jar:]
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.StepWidget.StepWidget(StepWidget.java:59)
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.StepWidget.$lambda$0(StepWidget.java:76)
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.StepWidget$lambda$0$Type.accept(StepWidget.java:76)
        at java.util.ArrayList.$forEach(ArrayList.java:172) [rt.jar:1.8.0_222-ea]
        at java.util.ArrayList.forEach(ArrayList.java:172) [rt.jar:1.8.0_222-ea]
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.StepWidget.StepWidget(StepWidget.java:59)
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.StepWidget.StepWidget(StepWidget.java:55)
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.TaskWidget.$lambda$0(TaskWidget.java:82)
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.TaskWidget$lambda$0$Type.accept(TaskWidget.java:82)
        at java.util.ArrayList.$forEach(ArrayList.java:172) [rt.jar:1.8.0_222-ea]
        at java.util.ArrayList.forEach(ArrayList.java:172) [rt.jar:1.8.0_222-ea]
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.TaskWidget.TaskWidget(TaskWidget.java:55)
        at org.ovirt.engine.ui.webadmin.section.main.view.overlay.TasksView.$lambda$0(TasksView.java:45)
        at org.ovirt.engine.ui.webadmin.section.main.view.overlay.TasksView$lambda$0$Type.accept(TasksView.java:45)
        at java.util.ArrayList.$forEach(ArrayList.java:172) [rt.jar:1.8.0_222-ea]
        at java.util.ArrayList.forEach(ArrayList.java:172) [rt.jar:1.8.0_222-ea]
        at org.ovirt.engine.ui.webadmin.section.main.view.overlay.TasksView.$updateTaskStatus(TasksView.java:41)
        at org.ovirt.engine.ui.webadmin.section.main.presenter.overlay.TasksPresenterWidget$1.eventRaised(TasksPresenterWidget.java:66)
        at org.ovirt.engine.ui.uicompat.Event.$raise(Event.java:99)
        at org.ovirt.engine.ui.uicommonweb.models.SearchableListModel.$setItems(SearchableListModel.java:708)
        at org.ovirt.engine.ui.uicommonweb.models.events.TaskListModel.$lambda$2(TaskListModel.java:218)
        at org.ovirt.engine.ui.uicommonweb.models.events.TaskListModel$lambda$2$Type.onSuccess(TaskListModel.java:218)
        at org.ovirt.engine.ui.frontend.Frontend$1.$onSuccess(Frontend.java:227) [frontend.jar:]
        at org.ovirt.engine.ui.frontend.Frontend$1.onSuccess(Frontend.java:227) [frontend.jar:]
        at org.ovirt.engine.ui.frontend.communication.OperationProcessor$1.$onSuccess(OperationProcessor.java:133) [frontend.jar:]
        at org.ovirt.engine.ui.frontend.communication.OperationProcessor$1.onSuccess(OperationProcessor.java:133) [frontend.jar:]
        at org.ovirt.engine.ui.frontend.communication.GWTRPCCommunicationProvider$5$1.$onSuccess(GWTRPCCommunicationProvider.java:270) [frontend.jar:]
        at org.ovirt.engine.ui.frontend.communication.GWTRPCCommunicationProvider$5$1.onSuccess(GWTRPCCommunicationProvider.java:270) [frontend.jar:]
        at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:198) [gwt-servlet.jar:]
        at com.google.gwt.http.client.Request.$fireOnResponseReceived(Request.java:233) [gwt-servlet.jar:]
        at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:409) [gwt-servlet.jar:]
        at Unknown.onreadystatechange<(https://hostedenginesm3.lab.eng.blr.redhat.com/ovirt-engine/webadmin/?locale=en_US)
        at com.google.gwt.core.client.impl.Impl.apply(Impl.java:236) [gwt-servlet.jar:]
        at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:275) [gwt-servlet.jar:]
        at Unknown.Tu/<(https://hostedenginesm3.lab.eng.blr.redhat.com/ovirt-engine/webadmin/?locale=en_US)
        at Unknown.anonymous(Unknown)

2019-07-17 16:00:15,692+05 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-42) [] Permutation name: ECB0017A77B1F0ABE452044584E93B7F
2019-07-17 16:00:15,692+05 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-42) [] Uncaught exception: com.google.gwt.core.client.JavaScriptException: (TypeError) : b is null
        at com.google.gwt.i18n.shared.DateTimeFormat.$format(DateTimeFormat.java:761) [gwt-servlet.jar:]
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.StepWidget.StepWidget(StepWidget.java:59)
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.StepWidget.$lambda$0(StepWidget.java:76)
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.StepWidget$lambda$0$Type.accept(StepWidget.java:76)
        at java.util.ArrayList.$forEach(ArrayList.java:172) [rt.jar:1.8.0_222-ea]
        at java.util.ArrayList.forEach(ArrayList.java:172) [rt.jar:1.8.0_222-ea]
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.StepWidget.StepWidget(StepWidget.java:59)
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.StepWidget.StepWidget(StepWidget.java:55)
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.TaskWidget.$lambda$0(TaskWidget.java:82)
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.TaskWidget$lambda$0$Type.accept(TaskWidget.java:82)
        at java.util.ArrayList.$forEach(ArrayList.java:172) [rt.jar:1.8.0_222-ea]
        at java.util.ArrayList.forEach(ArrayList.java:172) [rt.jar:1.8.0_222-ea]
        at org.ovirt.engine.ui.common.widget.uicommon.tasks.TaskWidget.TaskWidget(TaskWidget.java:55)
        at org.ovirt.engine.ui.webadmin.section.main.view.overlay.TasksView.$lambda$0(TasksView.java:45)
        at org.ovirt.engine.ui.webadmin.section.main.view.overlay.TasksView$lambda$0$Type.accept(TasksView.java:45)
        at java.util.ArrayList.$forEach(ArrayList.java:172) [rt.jar:1.8.0_222-ea]
        at java.util.ArrayList.forEach(ArrayList.java:172) [rt.jar:1.8.0_222-ea]
        at org.ovirt.engine.ui.webadmin.section.main.view.overlay.TasksView.$updateTaskStatus(TasksView.java:41)
        at org.ovirt.engine.ui.webadmin.section.main.presenter.overlay.TasksPresenterWidget$1.eventRaised(TasksPresenterWidget.java:66)
        at org.ovirt.engine.ui.uicompat.Event.$raise(Event.java:99)
        at org.ovirt.engine.ui.uicommonweb.models.SearchableListModel.$setItems(SearchableListModel.java:708)
        at org.ovirt.engine.ui.uicommonweb.models.events.TaskListModel.$lambda$0(TaskListModel.java:33)
        at org.ovirt.engine.ui.uicommonweb.models.events.TaskListModel$lambda$0$Type.onSuccess(TaskListModel.java:33)
        at org.ovirt.engine.ui.frontend.Frontend$1.$onSuccess(Frontend.java:227) [frontend.jar:]
        at org.ovirt.engine.ui.frontend.Frontend$1.onSuccess(Frontend.java:227) [frontend.jar:]
        at org.ovirt.engine.ui.frontend.communication.OperationProcessor$1.$onSuccess(OperationProcessor.java:133) [frontend.jar:]
        at org.ovirt.engine.ui.frontend.communication.OperationProcessor$1.onSuccess(OperationProcessor.java:133) [frontend.jar:]
        at org.ovirt.engine.ui.frontend.communication.GWTRPCCommunicationProvider$5$1.$onSuccess(GWTRPCCommunicationProvider.java:270) [frontend.jar:]
        at org.ovirt.engine.ui.frontend.communication.GWTRPCCommunicationProvider$5$1.onSuccess(GWTRPCCommunicationProvider.java:270) [frontend.jar:]
        at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:198) [gwt-servlet.jar:]
        at com.google.gwt.http.client.Request.$fireOnResponseReceived(Request.java:233) [gwt-servlet.jar:]
        at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:409) [gwt-servlet.jar:]
        at Unknown.onreadystatechange<(https://hostedenginesm3.lab.eng.blr.redhat.com/ovirt-engine/webadmin/?locale=en_US)
        at com.google.gwt.core.client.impl.Impl.apply(Impl.java:236) [gwt-servlet.jar:]
        at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:275) [gwt-servlet.jar:]
        at Unknown.Tu/<(https://hostedenginesm3.lab.eng.blr.redhat.com/ovirt-engine/webadmin/?locale=en_US)
        at Unknown.anonymous(Unknown)

Comment 18 Sharon Gratch 2019-07-18 07:53:24 UTC

(In reply to Greg Sheremeta from comment #9)
> > There are two unrelated NPEs.
> > 
> > 1. StepWidget -- I'll fix.
> 
> https://gerrit.ovirt.org/98815

I back-ported the patch: https://gerrit.ovirt.org/#/c/101870/, so now the NPE seen in comment #16 should be fixed.

> 
> 
> > 2. something in UnitVmModel -- I need someone from virt to look, because I'm
> > not familiar with that. @Andrej or Sharon, could one of you assist?

This NPE seems to be fixed, since I can't see him reproduced in current logs.

Comment 19 bipin 2019-09-03 06:58:28 UTC

Tested with ovirt-engine-4.3.6.3-0.1.el7.noarch. The issue is not seen now.

Tested the below:
================
1.Create a replica 3 (1*3) volume
2.Create vm's and pump IO to it.
3.Add bricks to the volume mentioned above, now its 2*3 
4.Start the rebalance 
5.Once the rebalance is completed,click on remove brick
6.Once the sync is  completed , go to remove brick icon and click commit.
7.No exceptions seen which clicking on the volume


Based on the above results marking the bug as verified.

Comment 20 Sandro Bonazzola 2019-09-26 19:43:03 UTC

This bugzilla is included in oVirt 4.3.6 release, published on September 26th 2019.

Since the problem described in this bug report should be
resolved in oVirt 4.3.6 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.