1. A method comprising: receiving, at a computer system, debugging configuration information specifying a functional area of a data stream processing server to be debugged; identifying, by the computer system, an object associated with the functional area that has been instantiated by the data stream processing server; determining, by the computer system, that tracing for the object is enabled to perform the debugging; instantiating, by the computer system, a tracelet associated with the object; stepping, by the computer system, through the tracelet associated with the object to debug the object; and displaying, by the computer system, a visual representation of debugging results associated with the object.