[JIRA] (JENKINS-36115) java.util.ConcurrentModificationException when tried to open Jenkins via local host

lbrunda@gmail.com (JIRA)

unread,

Jun 21, 2016, 8:45:01 AM6/21/16

to jenkinsc...@googlegroups.com

Lakshmi Brunda created an issue

Jenkins /

JENKINS-36115

java.util.ConcurrentModificationException when tried to open Jenkins via local host

Issue Type:	Bug
Assignee:	Mark Waite
Components:	git-plugin, github-plugin
Created:	2016/Jun/21 12:44 PM
Environment:	Windows 8.1,64-bit machine,Jenkins 2.8 installed , C:\Program Files\Java>java -version java version "1.8.0_91" Java(TM) SE Runtime Environment (build 1.8.0_91-b14) Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode) Google Chrome and Mozilla Firefox Not able to notedown the Git Plugin and Github plugin versions since not able to login to jenkins
Labels:	git jenkins plugin
Priority:	Major
Reporter:	Lakshmi Brunda

Opening url http://localhost:8080 throwing below error,

hudson.util.HudsonFailedToLoad: org.jvnet.hudson.reactor.ReactorException: java.util.ConcurrentModificationException
at hudson.WebAppMain$3.run(WebAppMain.java:244)
Caused by: org.jvnet.hudson.reactor.ReactorException: java.util.ConcurrentModificationException
at org.jvnet.hudson.reactor.Reactor.execute(Reactor.java:269)
at jenkins.InitReactorRunner.run(InitReactorRunner.java:45)
at jenkins.model.Jenkins.executeReactor(Jenkins.java:1010)
at jenkins.model.Jenkins.<init>(Jenkins.java:878)
at hudson.model.Hudson.<init>(Hudson.java:85)
at hudson.model.Hudson.<init>(Hudson.java:81)
at hudson.WebAppMain$3.run(WebAppMain.java:227)
Caused by: java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
at java.util.ArrayList$Itr.next(Unknown Source)
at hudson.PluginManager.resolveDependantPlugins(PluginManager.java:882)
at hudson.PluginManager$2$2.run(PluginManager.java:563)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)
at jenkins.model.Jenkins$7.runTask(Jenkins.java:999)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

Add Comment

This message was sent by Atlassian JIRA (v7.1.7#71011-sha1:2526d7c)

mark.earl.waite@gmail.com (JIRA)

unread,

Jun 21, 2016, 10:03:04 AM6/21/16

to jenkinsc...@googlegroups.com

Mark Waite commented on

JENKINS-36115

Re: java.util.ConcurrentModificationException when tried to open Jenkins via local host

Lakshmi Brunda could you explain further why you think this stack trace is related to the git plugin or the github pull request builder plugin? The stack trace makes no reference to either of those plugins, nor does any error message point to either of those plugins.

Add Comment

mark.earl.waite@gmail.com (JIRA)

unread,

Jun 21, 2016, 10:03:09 AM6/21/16

to jenkinsc...@googlegroups.com

Mark Waite assigned an issue to Unassigned

Jenkins /

JENKINS-36115

java.util.ConcurrentModificationException when tried to open Jenkins via local host

Change By:	Mark Waite
Assignee:	Mark Waite

Add Comment

lbrunda@gmail.com (JIRA)

unread,

Jun 21, 2016, 11:16:01 AM6/21/16

to jenkinsc...@googlegroups.com

Lakshmi Brunda commented on

JENKINS-36115

Re: java.util.ConcurrentModificationException when tried to open Jenkins via local host

i have mentioned it under environment but not in the sense that error is because of those plugins.It was working fine till end of the day.But next day i tried to open jenkins freshly i faced Index out of bound exception then i stopped java SE binary and deleted Cloud bees folder and cloud bees plugin then it turned to above attached exception.

Add Comment

mark.earl.waite@gmail.com (JIRA)

unread,

Jun 21, 2016, 11:23:01 AM6/21/16

to jenkinsc...@googlegroups.com

Mark Waite updated an issue

Jenkins /

JENKINS-36115

java.util.ConcurrentModificationException when tried to open Jenkins via local host

Change By:	Mark Waite
Component/s:	git-plugin

Add Comment

mark.earl.waite@gmail.com (JIRA)

unread,

Jun 21, 2016, 11:23:01 AM6/21/16

to jenkinsc...@googlegroups.com

Mark Waite commented on

JENKINS-36115

Re: java.util.ConcurrentModificationException when tried to open Jenkins via local host

Thanks for the clarification. It sounds like you made a configuration change to an unrelated plugin and now need to revert that plugin. This bug either needs to be assigned to one of the projects that could do something about it, or closed so that you can shift the discussion about your configuration change to the Jenkins users mailing list.

The bug database is not a good place for configuration change related questions because it is reviewed by far fewer people than the people who watch the Jenkins users mailing list.

Add Comment

gentoo.integer@gmail.com (JIRA)

unread,

Jul 8, 2016, 11:31:01 AM7/8/16

to jenkinsc...@googlegroups.com

Kanstantsin Shautsou updated an issue

Jenkins /

JENKINS-36115

java.util.ConcurrentModificationException when tried to open Jenkins via local host

Change By:	Kanstantsin Shautsou
Component/s:	core
Component/s:	github-plugin

Add Comment

gentoo.integer@gmail.com (JIRA)

unread,

Jul 8, 2016, 11:31:01 AM7/8/16

to jenkinsc...@googlegroups.com

Kanstantsin Shautsou commented on

JENKINS-36115

Re: java.util.ConcurrentModificationException when tried to open Jenkins via local host

No idea what right component is and there is no zero components, so to core.

Add Comment

toefel18@gmail.com (JIRA)

unread,

Aug 1, 2016, 8:22:01 AM8/1/16

to jenkinsc...@googlegroups.com

Christophe Hesters commented on

JENKINS-36115

Re: java.util.ConcurrentModificationException when tried to open Jenkins via local host

I just ran into this problem as well. I tried to update some plugins, but that failed due to a proxy exception. Then Jenkins was rebooted and shows exactly the same error. I can't find a solution.