Debugging a distributed application

A streams processing application is debugged in a job that is submitted to a running InfoSphere® Streams instance.

Debugging is accomplished by having the PEs started with the sdb wrapper, which runs the PEs in an xterm window under the Streams Debugger (sdb). The xterm window provides the console input and output environment to run the sdb commands. If there is no operator fusing in effect for the streams processing application, the debugging for each operator is in a separate xterm window. If some operators are fused, all the operators for a PE are debugged in the same xterm window.