An Oozie WORKFLOW is a collection of ACTIONS arranged in a Directed Acyclic Graph (DAG) . Control nodes define job chronology, setting rules for beginning and ending a workflow, which controls the workflow execution path with decision, fork and join nodes. Action nodes trigger the execution of tasks.

Workflow nodes are CLASSIFIED in control flow nodes and action nodes:

Control flow nodes: nodes that control the start and end of the workflow and workflow job execution path.

Action nodes: nodes that trigger the execution of a computation/processing task.

Workflow definitions can be parameterized.The parameterization of workflow definitions it done using JSP Expression Language syntax , allowing not only to support variables as parameters but also functions and complex expressions.

An Oozie Workflow is a collection of actions arranged in a Directed Acyclic Graph (DAG) . Control nodes define job chronology, setting rules for beginning and ending a workflow, which controls the workflow execution path with decision, fork and join nodes. Action nodes trigger the execution of tasks.

Workflow nodes are classified in control flow nodes and action nodes:

Control flow nodes: nodes that control the start and end of the workflow and workflow job execution path.

Action nodes: nodes that trigger the execution of a computation/processing task.

Workflow definitions can be parameterized.The parameterization of workflow definitions it done using JSP Expression Language syntax , allowing not only to support variables as parameters but also functions and complex expressions.