Package org.apache.nifi.annotation.behavior

Annotation Interface SideEffectFree

@Documented
@Target(TYPE)
@Retention(RUNTIME)
@Inherited
public @interface SideEffectFree

Marker annotation a Processor implementation can use to indicate that its operations on FlowFiles can be safely repeated across process sessions. If a processor has this annotation and it allows the framework to manage session commit and rollback then the framework may elect to cascade a ProcessSession given to this processor's onTrigger method to the onTrigger method of another processor. It can do this knowing that if something fails along a series of processors using this same session that it can all be safely rolled back without any ill effects on external services which could not be rolled back and thus all the processes could be safely repeated (implied idempotent behavior).