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From Daniel de Oliveira Mantovani <daniel.oliveira.mantov...@gmail.com>
Subject Re: how to use cluster sparkSession like localSession
Date Fri, 02 Nov 2018 03:57:54 GMT
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) <0049003208@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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> 0049003208@znv.com
>
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-- 

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Daniel de Oliveira Mantovani
Perl Evangelist/Data Hacker
+1 786 459 1341

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