System for preventing malicious operator placement in streaming applications

Abstract

In preventing malicious operator placement in a streaming application, a stream computing management system receives a submission of an operator graph for the streaming application. A scheduler of the stream computing management system places the operators across a plurality of computing nodes. A threat detector of the stream computing management system monitors placements of the operators during the submission of the operator graph and a runtime of the streaming application. The threat detector further monitors runtime activities of the operators of the streaming application. The threat detector compares the runtime activities of the operators of the streaming application with stored activities patterns. The threat detector determines whether any anomalies identified based on the comparing exceeds a risk tolerance threshold. In response to an anomaly exceeding the risk tolerance threshold, the scheduler changes a placement of at least one of the operators.