ConcurrentModificationException in DownloadPrimitivesTask

[simon04]

Error occurred after the following:

1. Download large area of railway=rail using mirrored_download plugin
2. Download way 47296743 using download object

Not sure how to reproduce this easily …

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

Build-Date: 2012-07-12 10:41:22
Revision: 5326
Is-Local-Build: true

Identification: JOSM/1.5 (5326 SVN en)
Memory Usage: 217 MB / 3504 MB (89 MB allocated, but free)
Java version: 1.7.0_05-icedtea, Oracle Corporation, OpenJDK 64-Bit Server VM
Operating system: Linux
Dataset consistency test: No problems found

Plugin: HouseNumberTaggingTool (28412)
Plugin: SimplifyArea (27905)
Plugin: mirrored_download (28418)
Plugin: reltoolbox (28412)
Plugin: restart (28438)
Plugin: todo (28330)
Plugin: utilsplugin2 (28412)
Plugin: wikipedia (28472)

java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:819)
	at java.util.ArrayList$Itr.next(ArrayList.java:791)
	at org.openstreetmap.josm.gui.io.DownloadPrimitivesTask.initMultiFetchReader(DownloadPrimitivesTask.java:107)
	at org.openstreetmap.josm.gui.io.DownloadPrimitivesTask.realRun(DownloadPrimitivesTask.java:136)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.doRealRun(PleaseWaitRunnable.java:82)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.run(PleaseWaitRunnable.java:145)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
	at java.lang.Thread.run(Thread.java:722)

[Don-vip]

Ticket #8502 has been marked as a duplicate of this ticket.

[Don-vip]

In 5778/josm:

fix #7848 - ConcurrentModificationException in DownloadPrimitivesTask