Re: [swtbot-dev] java.util.ConcurrentModificationException

[Mickael Istria <mistria@xxxxxxxxxx>]

On 08/27/2013 09:49 AM, Imad Sabaany wrote:

Hi everyone,

I write tests to my RCP on swtbot and it's work, but sometimes I get these Exception: 

!MESSAGE Exception during refresh command listener registration

!STACK 0

java.util.ConcurrentModificationException

at java.util.HashMap$HashIterator.nextEntry(Unknown Source)

at java.util.HashMap$ValueIterator.next(Unknown Source)

at org.eclipse.core.commands.CommandManager.addExecutionListener(CommandManager.java:324)

at org.eclipse.ui.internal.commands.CommandService.addExecutionListener(CommandService.java:110)

at com.sap.ndb.studio.dwb.team.ui.internal.DwbTeamUiPluginStartup.registerRefreshCommandListener(DwbTeamUiPluginStartup.java:75)

at com.sap.ndb.studio.dwb.team.ui.internal.DwbTeamUiPluginStartup$1.runInUIThread(DwbTeamUiPluginStartup.java:57)

at org.eclipse.ui.progress.UIJob$1.run(UIJob.java:95)
...
Do you have any idea what I can do to fix these?

This stack does seem to show an issue in SWTBot but rather in the DwbTeamUIPluginStartup which seems to have a bug in the way it manages threads (more specifically, there seems to be 2 threads manipulating an HashMap iterator at the same time, an iterator should usually be used in a single thread).

HTH

--
Mickael Istria
Eclipse developer at JBoss, by Red Hat
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