What are the parameters defined to specify window operation ?
 window length, sliding interval
 state size, window length
 state size, sliding interval
 none of the mentioned?
Answers
I think...
State size , sliding interval
But not sure about that...
Answer:
Concept:
A parameter, also known as a formal argument in computer programming, is a particular type of variable used in a subroutine to refer to one of the bits of data given to the procedure as input. These bits of information represent the values of the arguments (also known as actual arguments or actual parameters) that will be used to call or invoke the function. A subroutine is typically defined with an ordered list of parameters so that each time the subroutine is called, its arguments are evaluated for that call and the results can be assigned to the associated parameters.
Given:
What are the defined parameters for window operation?
[A]. window length, sliding interval
[B]. state size, window length
[C]. state size, sliding interval
[D]. none of the mentioned?
Find:
Find the right explanation that has been asked question.
Answer:
The answer is option[A]. window length, sliding interval
The source RDDs that fall into the window as it moves over a source DStream are merged. It also functioned on a system that generates windowed DStream spark RDDs. As a result, in this particular instance, the operation is applied to the data's most recent 3 time units and slides by 2 time units.
In essence, two parameters must be specified for every Spark window execution.
- Window length – It specifies the window's time frame.
- Sliding interval – It specifies the frequency at which the window action is carried out.
The sliding interval, expressed in seconds, determines how far the window will move. In the preceding example, the sliding interval was 1, therefore the computation was executed at time = 0, time =1, time =2, and time= 3, respectively. If the sliding interval was changed to 2, the calculation was executed at time =0, time= 1, time =3, and time =5.
#SPJ2