pinpoint-apm/pinpoint · error · IllegalArgumentException

Argument type of the setter is different with the field…

Error message

Argument type of the setter is different with the field type. setterMethod: ${fieldType}, fieldType: ${fieldJavaType}

What it means

Thrown inside ASMClass.addSetter: the analyzed setter method's argument type does not match the target field's type (SetterAnalyzer result vs fieldNode type), so injecting the setter would create a type-inconsistent mutator.

Solutions

1. Make the setter interface's parameter type exactly match the field type
2. Check for primitive/wrapper mismatches
3. Correct the setter class bound in the plugin configuration

When it happens

Trigger: Thrown at agent-module/profiler/src/main/java/com/navercorp/pinpoint/profiler/instrument/ASMClass.java:338 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of pinpoint-apm/pinpoint@744c3d3075 (2026-09-07). Data as JSON: /api/errors/4b52ea528450b5ec. Report an issue: GitHub.

Appendix: source

Thrown at agent-module/profiler/src/main/java/com/navercorp/pinpoint/profiler/instrument/ASMClass.java:338

    @Override
    public void addSetter(Class<?> setterClass, String fieldName) throws InstrumentException {
        this.addSetter(setterClass, fieldName, false);
    }

    @Override
    public void addSetter(Class<?> setterClass, String fieldName, boolean removeFinal) throws InstrumentException {
        Objects.requireNonNull(setterClass, "setterClass");
        try {
            final SetterAnalyzer.SetterDetails setterDetails = SetterAnalyzer.instance().analyze(setterClass);
            final ASMFieldNodeAdapter fieldNode = this.classNode.getField(fieldName, null);
            if (fieldNode == null) {
                throw new IllegalArgumentException("Not found field. name=" + fieldName);
            }

            final Type fieldType = setterDetails.getFieldType();
            if (!fieldNode.getJavaType().equals(fieldType)) {
                throw new IllegalArgumentException("Argument type of the setter is different with the field type. setterMethod: " + fieldType + ", fieldType: " + fieldNode.getJavaType());
            }

            if (fieldNode.isStatic()) {
                throw new IllegalArgumentException("Cannot add setter to static fields. setterMethod: " + setterDetails.getSetter().getName() + ", fieldName: " + fieldName);
            }

            final int original = fieldNode.getAccess();
            boolean finalRemoved = false;
            if (fieldNode.isFinal()) {
                if (!removeFinal) {
                    throw new IllegalArgumentException("Cannot add setter to final field. setterMethod: " + setterDetails.getSetter().getName() + ", fieldName: " + fieldName);
                } else {
                    final int removed = original & ~Opcodes.ACC_FINAL;
                    fieldNode.setAccess(removed);
                    finalRemoved = true;
                }
            }

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