id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
23223	Unable to finish merging two layers	aubreybachant@…	team	"
Even with two extremely small layers (<10 nodes each). 
It never manages to merge the two layers. It just stays loading for hours.



==== What steps will reproduce the problem?
1. Merge two layers together.
2. 
3. 

==== What is the expected result?

==== What happens instead?

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

{{{
Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2023-08-29 13:38:40 +0200 (Tue, 29 Aug 2023)
Revision:18822
Build-Date:2023-08-30 01:30:57
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (18822 en) Mac OS X 14.0
OS Build number: macOS 14.0 (23A344)
Memory Usage: 937 MB / 2048 MB (331 MB allocated, but free)
Java version: 17.0.7+7-LTS, Azul Systems, Inc., OpenJDK 64-Bit Server VM
Look and Feel: com.apple.laf.AquaLookAndFeel
Screen: Display 1 1440×900 (scaling 2.00×2.00)
Maximum Screen Size: 1440×900
Best cursor sizes: 16×16→16×16, 32×32→32×32
System property file.encoding: UTF-8
System property sun.jnu.encoding: UTF-8
Locale info: en_US
Numbers with default locale: 1234567890 -> 1234567890
Dataset consistency test: No problems found

Plugins:
+ FastDraw (36126)
+ apache-commons (36034)
+ apache-http (35924)
+ auto_tools (81)
+ centernode (v1.0.4)
+ gridify (1606242219)
+ jaxb (36118)
+ jna (36126)
+ jogl (1.2.3)
+ kendzi3d (1.0.205)
+ kendzi3d-resources (0.0.2)
+ log4j (36045)
+ mapwithai (816)
+ mapwithai-dev (1.8.3-9-g16feefa)
+ measurement (36126)
+ pmtiles (36125)
+ splinex (36126)
+ terracer (36126)
+ utilsplugin2 (36134)

Map paint styles:
- https://josm.openstreetmap.de/josmfile?page=Styles/ColorWays&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Enhanced_Lane_and_Road_Attributes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Surface&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/SimpleBuildingTags&zip=1
- https://github.com/bastik/mapcss-tools/raw/osm/mapnik2mapcss/osm-results/mapnik.zip
- https://josm.openstreetmap.de/josmfile?page=Styles/MapWithAI&zip=1
- https://pasharm.github.io/New_basic_style_for_JOSM/New_basic_style.mapcss

Last errors/warnings:
- 00009.788 E: Failed to locate image 'MapWithAI'
- 00009.973 W: java.lang.IllegalArgumentException: Even number of doubles expected in string, got 1: AE
- 00010.129 W: java.util.concurrent.ExecutionException: java.lang.ClassCastException. Cause: java.lang.ClassCastException. Cause: java.lang.ClassCastException: class javax.json.JsonValueImpl cannot be cast to class javax.json.JsonString (javax.json.JsonValueImpl and javax.json.JsonString are in unnamed module of loader 'app')
- 00010.136 W: java.util.concurrent.ExecutionException: java.lang.ClassCastException. Cause: java.lang.ClassCastException. Cause: java.lang.ClassCastException: class javax.json.JsonValueImpl cannot be cast to class javax.json.JsonString (javax.json.JsonValueImpl and javax.json.JsonString are in unnamed module of loader 'app')
- 00010.241 W: java.util.concurrent.ExecutionException: java.lang.ClassCastException. Cause: java.lang.ClassCastException. Cause: java.lang.ClassCastException: class javax.json.JsonValueImpl cannot be cast to class javax.json.JsonString (javax.json.JsonValueImpl and javax.json.JsonString are in unnamed module of loader 'app')
- 00010.244 W: java.util.concurrent.ExecutionException: java.lang.ClassCastException. Cause: java.lang.ClassCastException. Cause: java.lang.ClassCastException: class javax.json.JsonValueImpl cannot be cast to class javax.json.JsonString (javax.json.JsonValueImpl and javax.json.JsonString are in unnamed module of loader 'app')
- 00533.901 E: Thread main-worker-0 raised java.lang.IllegalStateException: Already registered a conflict for primitive '{Node id=811502313 version=1 MVD lat=38.9381953,lon=-77.0416586}'.
}}}
"	defect	new	normal		Core	tested		Layers Merging