Projection of Tuple DataSet具體用法

 

實

驗結構如下:

├── dataset_api.iml
├── pom.xml
└── src
    ├── main
    │   ├── java
    │   │   └── dataset_api.java
    │   └── resources
    └── test
        └── java
 

 

/home/appleyuchi/test.csv內容如下:

8,1.61,"test1"
3,3.62,"test2"
7,5.63,"test3"

 

 

dataset_api.java

import org.apache.flink.api.java.ExecutionEnvironment;
import org.apache.flink.api.java.tuple.Tuple3;
import org.apache.flink.api.java.tuple.Tuple2;
import org.apache.flink.api.java.DataSet;
import org.apache.flink.streaming.api.environment.Stream