Description: The execution graph is a visual representation that illustrates the structure of a job in data stream processing frameworks, showing how tasks are connected and executed within a data stream. This graph is fundamental for understanding the processing architecture, as it allows developers and system architects to visualize the dependencies between different operations and tasks. Each node in the graph represents a specific task, while the edges indicate the transfer of data between these tasks. This representation facilitates performance optimization, as it helps identify bottlenecks and improve processing efficiency. Additionally, the execution graph is dynamic, meaning it can adapt to changes in the data flow or job logic, allowing the framework to scale and manage resources effectively. In summary, the execution graph is a key tool for planning, executing, and monitoring jobs in data processing frameworks, providing a clear view of how data is processed in real-time.