Exporting geojson crashes josm

[james2432]

What steps will reproduce the problem?

1. Open 300mb osm file
2. Save as geojson

What is the expected result?

It saves.

What happens instead?

Error message and 0byte file is written

Please provide any additional information below. Attach a screenshot if possible.

URL:http://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2016-10-18 20:32:20 +0200 (Tue, 18 Oct 2016)
Build-Date:2016-10-19 01:34:39
Revision:11146
Relative:URL: ^/trunk

Identification: JOSM/1.5 (11146 en) Windows 10 64-Bit
Memory Usage: 4126 MB / 8889 MB (1749 MB allocated, but free)
Java version: 1.8.0_102-b14, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: \Display0 1680x1050, \Display1 1680x1050
Maximum Screen Size: 1680x1050
Dataset consistency test: No problems found

Plugins:
+ ejml (32680)
+ geojson (43)
+ geotools (32813)
+ jts (32699)


=== REPORTED CRASH DATA ===
BugReportExceptionHandler#handleException:
No data collected.

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (20) of main
org.openstreetmap.josm.data.osm.MultipolygonBuilder$JoinedPolygonCreationException: Each node must connect exactly 2 ways
	at org.openstreetmap.josm.data.osm.MultipolygonBuilder.joinWays(MultipolygonBuilder.java:300)
	at org.openstreetmap.josm.data.osm.MultipolygonBuilder.joinWays(MultipolygonBuilder.java:236)
	at org.openstreetmap.josm.io.GeoJSONWriter$GeometryPrimitiveVisitor.visit(GeoJSONWriter.java:122)
	at org.openstreetmap.josm.data.osm.Relation.accept(Relation.java:179)
	at org.openstreetmap.josm.io.GeoJSONWriter.appendPrimitive(GeoJSONWriter.java:172)
	at org.openstreetmap.josm.io.GeoJSONWriter.lambda$appendLayerFeatures$0(GeoJSONWriter.java:206)
	at java.lang.Iterable.forEach(Unknown Source)
	at org.openstreetmap.josm.io.GeoJSONWriter.appendLayerFeatures(GeoJSONWriter.java:206)
	at org.openstreetmap.josm.io.GeoJSONWriter.write(GeoJSONWriter.java:81)
	at org.openstreetmap.josm.io.GeoJSONWriter.write(GeoJSONWriter.java:63)
	at org.openstreetmap.josm.io.GeoJSONExporter.exportData(GeoJSONExporter.java:37)
	at org.openstreetmap.josm.actions.SaveActionBase.doInternalSave(SaveActionBase.java:97)
	at org.openstreetmap.josm.actions.SaveActionBase.doSave(SaveActionBase.java:69)
	at org.openstreetmap.josm.gui.layer.Layer$LayerSaveAsAction.actionPerformed(Layer.java:530)
	at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
	at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
	at javax.swing.AbstractButton.doClick(Unknown Source)
	at javax.swing.plaf.basic.BasicMenuItemUI.doClick(Unknown Source)
	at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(Unknown Source)
	at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
	at java.awt.Component.processMouseEvent(Unknown Source)
	at javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.awt.EventQueue.access$500(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)
	Suppressed: javax.json.stream.JsonGenerationException: Generating incomplete JSON
		at org.glassfish.json.JsonGeneratorImpl.close(JsonGeneratorImpl.java:509)
		at org.glassfish.json.JsonPrettyGeneratorImpl.close(JsonPrettyGeneratorImpl.java:53)
		at org.glassfish.json.JsonWriterImpl.close(JsonWriterImpl.java:150)
		at org.openstreetmap.josm.io.GeoJSONWriter.write(GeoJSONWriter.java:84)
		... 44 more

[simon04]

In 11166/josm:

fix #13827 - Exporting invalid multipolygon as GeoJSON crashes JOSM