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[Spark][Python][RDD][DataFrame]从 RDD 构造 DataFrame 例子 from pyspark.sql.types import * schema = StructType( [ StructField("age",IntegerType(),True), Str 阅读全文
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[Spark][Python][DataFrame][RDD]DataFrame中抽取RDD例子 sqlContext = HiveContext(sc) peopleDF = sqlContext.read.json("people.json") peopleRDD = peopleDF.map( 阅读全文
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[Spark][Python][DataFrame][RDD]从DataFrame得到RDD的例子 $ hdfs dfs -cat people.json $pyspark sqlContext = HiveContext(sc) peopleDF = sqlContext.read.json("p 阅读全文
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[Spark][Python][DataFrame][Write]DataFrame写入的例子 $ hdfs dfs -cat people.json $pyspark sqlContext = HiveContext(sc) peopleDF = sqlContext.read.json("peo 阅读全文
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[Spark][Python][DataFrame][SQL]Spark对DataFrame直接执行SQL处理的例子 $cat people.json $ hdfs dfs -put people.json $pyspark sqlContext = HiveContext(sc)peopleDF 阅读全文
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[Spark][Hive][Python][SQL]Spark 读取Hive表的小例子$ cat customers.txt 1 Ali us 2 Bsb ca 3 Carls mx $ hive hive> > CREATE TABLE IF NOT EXISTS customers( > cus 阅读全文