Bug 152919 [Import/Export] import existing project w/ copy is inefficient
I just tried to import some existing projects and selected "copy projects into workspace". After a long time (sorry, no measurements) I had to cancel the request, because I was running out of disk space. I had just succeeded in importing the first project (jdt core), which takes approx. 80MB disk space, but at that time the previously blank workspace consumed additional 300MB mainly in: .metadata/.plugins/org.eclipse.core.resources/.history/ Is this operation recording undo-information for each single file imported? Unless I made something really stupid, this operation seems not to be usable for large projects.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardProjectsImportPage.java
updateProjectsList(directoryPathField.getText().trim());
			}
		});
		archivePathField.addTraverseListener(new TraverseListener() {
			/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.swt.events.TraverseListener#keyTraversed(org.eclipse.swt.events.TraverseEvent)
			 */
			public void keyTraversed(TraverseEvent e) {
				if (e.detail == SWT.TRAVERSE_RETURN) {
					e.doit = false;
					updateProjectsList(archivePathField.getText().trim());
				}
			}
		});
		archivePathField.addFocusListener(new FocusAdapter() {
			/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.swt.events.FocusListener#focusLost(org.eclipse.swt.events.FocusEvent)
			 */
			public void focusLost(org.eclipse.swt.events.FocusEvent e) {
				updateProjectsList(archivePathField.getText().trim());
			}
		});
		projectFromDirectoryRadio.addSelectionListener(new SelectionAdapter() {
			/*
			 * (non-Javadoc)
			 *