Mention the components that are used for streaming the flow of data.
devquora
Posted On: Feb 22, 2018
There are three components that are used to streamflow of data.
| 1. Bolt | 2. Spout | 3.Tuple |
| In a storm, the processing logic unit is represented by the bolt. | In a storm, the source of the data is represented by the spout. | In a storm, a tuple is the major data structure. |
| Bolt is used for doing all types of processing which includes filtering and interaction to the data. Bolts also have the duty of acknowledging the processing done by tuples. | The spout is used for reading data through the data sources. Broadly, spouts are classified into two categories. These are called Reliable and Unreliable. | Tuples are helpful with its helper methods which help in getting field values without the need for casting the result. |
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