Pause Spark Streaming reading or sampling streaming data

[Heath Guo]

Hi, I have a question about sampling Spark Streaming data, or getting part of 
the data. For every minute, I only want the data read in during the first 10 
seconds, and discard all data in the next 50 seconds. Is there any way to pause 
reading and discard data in that period? I'm doing this to sample from a stream 
of huge amount of data, which saves processing time in the real-time program. 
Thanks!