dataframe怎么转存成csv格式

Question

老师请赐教

Answer 1

Michael_PK 2017-07-21 13:57:03

借助于外部数据源spark-csv就行了，只要format（“csv”）就行了

• 提问者 追梦逐梦白日做梦 #1

  报了这个错
  Exception in thread "main" java.lang.RuntimeException: Multiple sources found for csv (org.apache.spark.sql.execution.datasources.csv.CSVFileFormat, com.databricks.spark.csv.DefaultSource15), please specify the fully qualified class name.
  
  
  我的代码是
   accessDF.join(accessDF2,accessDF.col("spu_id")===accessDF2.col("spu_id2"))
           .select("spu_id","brand_id","cat_id","uid","action_type","date")
        .coalesce(5).write.mode(SaveMode.Overwrite).csv("F:\\竞赛数据\\result\\goods_train")

• 提问者 追梦逐梦白日做梦 #2

  非常感谢！