clausnagel
commented
2 years ago Well, in order to write a CityJSON file, most of its contents must be held in main memory. In your case, this requires more main memory than available for the JVM. That's why you face a java.lang.OutOfMemoryError exception.
The question is whether it makes senso to create such a large CityJSON file. Target applications that you want to load the CityJSON with will most likely run into main memory issues as well. Thus, my recommendation is to split the huge CityGML file into smaller files and convert each of them separately.
If, however, you still want to create one huge CityJSON file, you need to give the citygml-tools process more main memory. To do so, you can either open the start script (citygml-tools for Linux, citygml-tools.bat for Windows) with a text editor, search for the line DEFAULT_JVM_OPTS="-Xms1G" and adapt the memory limit. I guess you will need at least 8GB or 10GB, so try to start with DEFAULT_JVM_OPTS="-Xms1G -Xmx8G".
If you do not want to fiddle around with the start scripts, you can also set the environment variable JAVA_OPTS to the value "-Xms1G -Xmx8G" before running the tool.
Saji70
Dear Citygml team
I want to convert large CityGML file (~4GB) to CityJson but I encontered following Error: any advice to resolve it?
[19:49:35 ERROR] The following unexpected error occurred during execution. java.lang.OutOfMemoryError: GC overhead limit exceeded at sun.misc.FloatingDecimal.readJavaFormatString(Unknown Source) at sun.misc.FloatingDecimal.parseDouble(Unknown Source) at java.lang.Double.parseDouble(Unknown Source) at com.sun.xml.bind.DatatypeConverterImpl._parseDouble(DatatypeConverterImpl.java:207) at com.sun.xml.bind.v2.model.impl.RuntimeBuiltinLeafInfoImpl$21.parse(RuntimeBuiltinLeafInfoImpl.java:749) at com.sun.xml.bind.v2.model.impl.RuntimeBuiltinLeafInfoImpl$21.parse(RuntimeBuiltinLeafInfoImpl.java:747) at com.sun.xml.bind.v2.runtime.reflect.ListTransducedAccessorImpl.processValue(ListTransducedAccessorImpl.java:110) at com.sun.xml.bind.v2.runtime.reflect.ListTransducedAccessorImpl.parse(ListTransducedAccessorImpl.java:125) at com.sun.xml.bind.v2.runtime.unmarshaller.ValuePropertyLoader.text(ValuePropertyLoader.java:37) at com.sun.xml.bind.v2.runtime.unmarshaller.StructureLoader.text(StructureLoader.java:261) at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.text(UnmarshallingContext.java:560) at com.sun.xml.bind.v2.runtime.unmarshaller.InterningXmlVisitor.text(InterningXmlVisitor.java:63) at com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.processText(StAXStreamConnector.java:308) at com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.handleEndElement(StAXStreamConnector.java:186) at com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.bridge(StAXStreamConnector.java:155) at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:385) at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:356) at org.citygml4j.builder.jaxb.xml.io.reader.JAXBSimpleReader.nextFeature(JAXBSimpleReader.java:133) at org.citygml4j.tools.command.ToCityJSONCommand.call(ToCityJSONCommand.java:107) at org.citygml4j.tools.command.ToCityJSONCommand.call(ToCityJSONCommand.java:50) at picocli.CommandLine.executeUserObject(CommandLine.java:1953) at picocli.CommandLine.access$1300(CommandLine.java:145) at picocli.CommandLine$RunAll.recursivelyExecuteUserObject(CommandLine.java:2422) at picocli.CommandLine$RunAll.recursivelyExecuteUserObject(CommandLine.java:2424) at picocli.CommandLine$RunAll.handle(CommandLine.java:2419) at picocli.CommandLine$RunAll.handle(CommandLine.java:2383) at picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2179) at org.citygml4j.tools.CityGMLTools.process(CityGMLTools.java:131) at org.citygml4j.tools.CityGMLTools.main(CityGMLTools.java:87) [19:49:35 WARN] citygml-tools execution failed.
Thanks