Bug 214223 [Markers] 'Marker id not found' exceptions from GroupMarkerField#compare(..) in log
I20071218-0800 Log fills up with these during an incremental auto-build. IIRC, the Problems has not been made visible since the last restart. Warning Thu Jan 03 14:22:58 CET 2008 Marker id 4826685 not found. org.eclipse.core.internal.resources.ResourceException: Marker id 4826685 not found. at org.eclipse.core.internal.resources.Marker.checkInfo(Marker.java:56) at org.eclipse.core.internal.resources.Marker.getType(Marker.java:194) at org.eclipse.ui.views.markers.internal.MarkerGroup$GroupMarkerField.compare(MarkerGroup.java:306) at org.eclipse.ui.internal.provisional.views.markers.MarkerComparator.compare(MarkerComparator.java:88) at java.util.Arrays.mergeSort(Arrays.java:1293) at java.util.Arrays.mergeSort(Arrays.java:1282) at java.util.Arrays.mergeSort(Arrays.java:1282) at java.util.Arrays.mergeSort(Arrays.java:1282) at java.util.Arrays.mergeSort(Arrays.java:1282) at java.util.Arrays.mergeSort(Arrays.java:1282) at java.util.Arrays.mergeSort(Arrays.java:1282) at java.util.Arrays.mergeSort(Arrays.java:1282) at java.util.Arrays.sort(Arrays.java:1210) at org.eclipse.ui.internal.provisional.views.markers.CachedMarkerBuilder.sortAndMakeCategories(CachedMarkerBuilder.java:951) at org.eclipse.ui.internal.provisional.views.markers.CachedMarkerBuilder.buildAllMarkers(CachedMarkerBuilder.java:251) at org.eclipse.ui.internal.provisional.views.markers.CachedMarkerBuilder$1.run(CachedMarkerBuilder.java:368) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/provisional/views/markers/MarkerFieldFilterGroup.java
*/
	static Collection getProjectsAsCollection(Object[] elements) {
		HashSet projects = new HashSet();
		for (int idx = 0; idx < elements.length; idx++) {
			if (elements[idx] instanceof IResource) {
				projects.add(((IResource) elements[idx]).getProject());
			} else {
				IProject[] mappingProjects = (((ResourceMapping) elements[idx])
						.getProjects());
				for (int i = 0; i < mappingProjects.length; i++) {
					projects.add(mappingProjects[i]);
				}
			}
		}
		return projects;
	}
	private CachedMarkerBuilder builder;
	private IConfigurationElement element;
	private Map EMPTY_MAP = new HashMap();
	private boolean enabled = true;
	private MarkerFieldFilter[] fieldFilters;
	private int scope;
	private String name;
	private String id;
	/**
	 * The entry for testing filters. Cached to prevent garbage.
	 */
	private MarkerEntry testEntry = new MarkerEntry(null);
	private IWorkingSet workingSet;
	private Collection workingSetPaths;