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Shark

Shark. Hive SQL on Spark. Michael Armbrust. Stage 0: Map-Shuffle-Reduce Mapper(row) { fields = row.split ("t") emit(fields[0], fields[1]); } Reducer(key, values) { sum = 0; for (value in values) { sum += value; } emit(key, sum) ; }. Stage 1: Map-Shuffle

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557 views • 43 slides

Shark: Hive (SQL) on Spark

Shark: Hive (SQL) on Spark. Reynold Xin. Stage 0: Map-Shuffle-Reduce Mapper(row) { fields = row.split ("t") emit(fields[0], fields[1]); } Reducer(key, values) { sum = 0; for (value in values) { sum += value; } emit(key, sum) ; }. Stage 1: Map-Shuffle

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499 views • 35 slides

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Shark

Shark: Hive (SQL) on Spark