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https://issues.apache.org/jira/browse/NETBEANS-1836?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Laszlo Kishalmi resolved NETBEANS-1836.
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Resolution: Abandoned
> Out of heap space removing large number of nodes
> ------------------------------------------------
>
> Key: NETBEANS-1836
> URL: https://issues.apache.org/jira/browse/NETBEANS-1836
> Project: NetBeans
> Issue Type: Bug
> Components: platform - Explorer
> Affects Versions: 8.2
> Reporter: Rangi Keen
> Priority: Critical
> Labels: pull-request-available
> Attachments: RemoveNodeOutOfHeapSpace.patch
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> If you remove a large number of selected nodes (e.g. 10,000), you may run out
> of heap space. Note that this does not occur when deleting nodes because the
> nodes are first deselected, but it will happen if the nodes to be removed are
> not first deselected.
> This seems to be related to [bug
> #193852|https://netbeans.org/bugzilla/show_bug.cgi?id=193852] designed to
> attempt to maintain cursor position when removing a node from the tree. Prior
> to the change for this bug, the node parent was set to null when the node was
> destroyed and therefore was not added to the list of nodes to be deselected
> in {{org.openide.explorer.view.TreeView.removedNodes}}.
> One fix (in [^RemoveNodeOutOfHeapSpace.patch]) is to change the check in
> {{org.openide.explorer.view.TreeView.removedNodes}} when adding to the
> removed selection list ({{remSel}}) to avoid adding paths for the nodes that
> will be deleted and only add the selected child nodes. This was put in place
> to avoid leaking memory for child nodes (see
> [JDK-6472844|https://bugs.openjdk.java.net/browse/JDK-6472844]), so I think
> this will maintain the intent and not result in further memory leaks.
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