arthas/tutorials/katacoda/command-mc-retransform-en/retransform.md

Load the external *.class files to retransform the loaded classes in JVM.

Reference: Instrumentation#retransformClasses

Options

Name	Specification
[c:]	hashcode of the class loader
[classLoaderClass:]	The class name of the ClassLoader that executes the expression.
[p:]	absolute path of the external *.class, multiple paths are separated with 'space'

Restrictions of the retransform command

• New field/method is not allowed
• The function that is running, no exit can not take effect.