[Spark][Python][DataFrame][Write]DataFrame写入的例子 $ hdfs dfs -cat people.json $pyspark sqlContext = HiveContext(sc) peopleDF ...

[Spark][Python]DataFrame中取出有限个记录的例子 的 继续 In [4]: peopleDF.select("age")Out[4]: DataFrame[age: bigint] In [5]: myDF=people.select("age")------------------------------------------------------------- ...

[Spark][Python]DataFrame中取出有限个记录的例子 的 继续 [15]: myDF=peopleDF.where("age>21") In [16]: myDF.limit(2).show() +---+-------+-----+----+|age| name ...

[Spark][Python]DataFrame中取出有限个记录的 继续 In [4]: peopleDF.select("age","name") In [11]: myDF=peopleDF.select("age","name") In [14]: myDF.limit ...

[Spark][Python]Spark 访问 mysql , 生成 dataframe 的例子： mydf001=sqlContext.read.format("jdbc").option("url","jdbc:mysql://localhost/loudacre")\ .option ...

[Spark][Python]spark 从 avro 文件获取 Dataframe 的例子 从如下地址获取文件： https://github.com/databricks/spark-avro/raw/master/src/test/resources/episodes.avro ...

[Spark][python]以DataFrame方式打开Json文件的例子： [training@localhost ~]$ cat people.json{"name":"Alice","pcode":"94304"}{"name":"Brayden","age":30,"pcode ...

[Spark][Python]DataFrame中取出有限个记录的例子： sqlContext = HiveContext(sc) peopleDF = sqlContext.read.json("people.json") peopleDF.limit(3).show ...