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https://issues.apache.org/jira/browse/NETBEANS-5177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17262111#comment-17262111
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Matthias Bläsing commented on NETBEANS-5177:
--------------------------------------------
On linux you can use "lsof" to list the open files for a process. Might be
interesting to compare the lists of Netbeans 12.1 and 12.2 and see if a large
number of files can be found in 12.2, which are not in 12.1 and fall into the
same category. It might also be worthy to check if the problem persists when
running current master, at least the LSP problem is fixed there.
> Crash: cannot get exclusive access to uihandler.properties
> ----------------------------------------------------------
>
> Key: NETBEANS-5177
> URL: https://issues.apache.org/jira/browse/NETBEANS-5177
> Project: NetBeans
> Issue Type: Bug
> Affects Versions: 12.2
> Reporter: Ulrich Mayring
> Priority: Blocker
> Attachments: messages.log, sc.png, screenshot2.png, thread_dump.rtf
>
>
> I experienced a number of total freezes after installing NB 12.2 (have been
> using 12.0 before), but could not get an error message of any sort, since NB
> was completely unresponsive to keystrokes or mouse. This changed today, I got
> an error popup, which I attach. NB was again totally unresponsive, but I
> could make a screenshot of the popup message.
> The black shadow around the error dialog actually is tens or hundreds of the
> same popup windows behind the first one. They keep piling up at CPU speed
> until the app runs out of memory or is killed. For a while I could close a
> few of them, but they kept coming up faster than I could click.
> The file in question (see screenshot) looks normal to me. It has the correct
> owner and permissions and its content is this:
> count=1000
> MTTF=71985
> uihandler.preferences.writable.check=1608633016127
> The crash happened directly after starting the IDE, while it was reading in
> the last project I worked on. No user interaction was involved.
> Fedora 29 / KDE.
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