Stateful transformation on Dstream in apache spark with example of wordcount
Reading Time: 2 minutes Sometimes we have a use-case in which we need to maintain state of paired Dstream to use it in next Dstream . So we are taking a example of stateful wordcount in socketTextStreaming. Like in wordcount example if word “xyz” comes twice is in first Dstream or window, it reduce it and its value is 2 but its state will lost in the next Dstream Continue Reading