Re: how to use cluster sparkSession like localSession

[数据与人工智能产品开发部]

then how about spark sql and spark MLlib , we use them at most time

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On 11/2/2018 11:58，Daniel de Oliveira Mantovani<daniel.oliveira.mantov...@gmail.com> wrote：

Please, read about Spark Streaming or Spark Structured Streaming. Your web application can easily communicate through some API and you won’t have the overhead of start a new spark job, which is pretty heavy.

On Thu, Nov 1, 2018 at 23:01 崔苗(数据与人工智能产品开发部) <0049003...@znv.com> wrote:

Hi，

we want to execute spark code with out submit application.jar,like this code:

public static void main(String args[]) throws Exception{

        SparkSession spark = SparkSession

                .builder()

                .master("local[*]")

                .appName("spark test")

                .getOrCreate();

      

        Dataset<Row> testData = spark.read().csv(".\\src\\main\\java\\Resources\\no_schema_iris.scv");

        testData.printSchema();

        testData.show();

    }

the above code can work well with idea , do not need to generate jar file and submit , but if we replace master("local[*]") with master("yarn") , it can't work , so is there a way to use cluster sparkSession like local sparkSession ?  we need to dynamically execute spark code in web server according to the different request ,  such as filter request will call dataset.filter() , so there is no application.jar to submit .
 

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Daniel de Oliveira Mantovani

Perl Evangelist/Data Hacker

+1 786 459 1341