On lines 81-83 for the description of RATE_CONTROL_ATTRIBUTE_NAME it states
"The name of an attribute whose values build toward the rate limit if Rate Control Criteria is set to 'attribute value'. "+ "The value of the attribute referenced by this property must be a positive integer, or the FlowFile will be routed to failure. "+ "This value is ignored if Rate Control Criteria is not set to 'attribute value'. Changing this value resets the rate counters." Yes on line 257 it is parsed as a long. Hence the comment on lines 81-83 should indicate a positive long instead of positive integer.
