从String Spark Java创建数据集（无RDD）

Question

I need to create a Dataset from String . Key is the String

Header h = new Header();
                    h.setName(Key);
                    SQLContext sqlC = spark.sqlContext();     
                    Dataset<String> ds = sqlC.createDataset(Collections.singletonList(h), Encoders.STRING());
                    ds.show();

I need to write it into txt file(Is there one? I am using csv right now)

ds.write().format("com.databricks.spark.csv").mode("overwrite")
                .save(SomeLocation);

Answer 1

from documentation df.write.text() :

https://spark.apache.org/docs/2.3.0/api/java/org/apache/spark/sql/DataFrameWriter.html#text-java.lang.String-