I am getting an out of mem exception trying to compile the widget set for a modest Web App I have built. I can no longer build my app in eclipse because :
java.lang.OutOfMemoryError: GC overhead limit exceeded
at java.util.Arrays.copyOf(Arrays.java:3332)
at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:137)
at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:121)
at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:622)
at java.lang.StringBuilder.append(StringBuilder.java:202)
at com.google.gwt.dev.javac.JdtUtil.signature(JdtUtil.java:346)
at com.google.gwt.dev.jjs.impl.ReferenceMapper.get(ReferenceMapper.java:82)
at com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor.resolveNameReference(GwtAstBuilder.java:3506)
at com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor.endVisit(GwtAstBuilder.java:2033)
at org.eclipse.jdt.internal.compiler.ast.SingleNameReference.traverse(SingleNameReference.java:1047)
at org.eclipse.jdt.internal.compiler.ast.IfStatement.traverse(IfStatement.java:279)
at org.eclipse.jdt.internal.compiler.ast.Block.traverse(Block.java:139)
at org.eclipse.jdt.internal.compiler.ast.LambdaExpression.traverse(LambdaExpression.java:692)
at org.eclipse.jdt.internal.compiler.ast.MessageSend.traverse(MessageSend.java:1040)
at org.eclipse.jdt.internal.compiler.ast.ConstructorDeclaration.traverse(ConstructorDeclaration.java:635)
at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1360)
at com.google.gwt.dev.jjs.impl.GwtAstBuilder.processImpl(GwtAstBuilder.java:3933)
at com.google.gwt.dev.jjs.impl.GwtAstBuilder.process(GwtAstBuilder.java:3971)
at com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater$UnitProcessorImpl.process(CompilationStateBuilder.java:129)
at com.google.gwt.dev.javac.JdtCompiler$CompilerImpl.process(JdtCompiler.java:336)
at org.eclipse.jdt.internal.compiler.Compiler.processCompiledUnits(Compiler.java:546)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:458)
at com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:1040)
at com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater.compile(CompilationStateBuilder.java:325)
at com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:548)
at com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:479)
at com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:465)
at com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:423)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:222)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:202)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:143)
at com.google.gwt.dev.Compiler.compile(Compiler.java:204)
This is in Eclipse 20018-12. Others have had this same issue in the past, the solution documented on this forum was to change a field in the Eclipse → Preferences → Vaadin view, but that field no longer exists in that view in the current version. I am getting rather tired of compiling the widgetset in Gradle and copying to my web content folder. Does anybody have any idea how to increase the memory for the GWT widgetset compiler using the VAADIN plugin?