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memory usage of data, scalability of data
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2019/08/09 Added Learning Scala scripts (Scala basics 1 - 4)
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2019/08/10 Added Scala exercise scripts (average friends by Name etc...)
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2019/08/15 Added Scala boardcasting exercise scripts etc...
- FlatMap compared to map would better deal with blank line etc, using it would let the RDD to return nothing for that line
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2019/08/19 Added Scala SparkSQL related scripts.