I think hsy541 is still confused by what is still confusing to me. Namely, what is the value that sentence "Each RDD in a DStream contains data from a certain interval" is speaking of? This is from the Discretized Streams <http://spark.apache.org/docs/latest/streaming-programming-guide.html#discretized-streams-dstreams> section. The example makes it seem like the batchDuration is 4 seconds and then this mystery interval is 1 second? Where is this mystery interval defined? Or am i missing something altogether?
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