My primary goal : To get top 10 hashtag for every 5 mins interval.
I want to do this efficiently. I have already done this by using
reducebykeyandwindow() and then sorting all hashtag in 5 mins interval
taking only top 10 elements. But this is very slow.
So I now I am thinking of retaining only top 10 hashtags in each RDD because
these only could come in the final answer.
I am stuck at : how to retain only top 10 hashtag in each RDD of my DSTREAM
? Basically I need to transform my DTREAM in which each RDD contains only
top 10 hashtags so that number of hashtags in 5 mins interval is low.
If there is some more efficient way of doing this then please let me know
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