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sandboxws/CountRatings.java

Created December 15, 2018 03:58
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CountRatings.java
PCollection<KV<String, Long>> ratingsCounts = csvRows
.apply("Extract Ratings",
FlatMapElements.into(TypeDescriptors.strings())
.via(csvRow -> Arrays.asList(csvRow.split(",")[1])))
.apply("Count Ratings", Count.<String>perElement());
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