Overview of Sort / Merge / Deduplicate / Split in few steps

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Step 7: Spliting data with selective Filters

We now add INCLUDE/EXCLUDE filters for some output files.
In this example, we split data into New Yorkers and non-New Yorkers.
The clients1.new-york-only.sorted.csv file only contains lines with field #9 equal to "NY" : there are 46 out of 500.
The "All but New York" file contains 500 - 46 = 454 lines, which sounds correct, . 		>>