编程

Spark Read and Write to CSV

Read

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val logs = spark.read.csv("/tmp/sousuo")
or
val logs = spark.read.option("delimiter", "\t").csv("/tmp/sousuo")
or
val logs = spark.read.option("delimiter", ",").csv("/tmp/sousuo")

Write

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df
   .repartition(1)
   .write.format("com.databricks.spark.csv")
   .option("header", "true")
   .save("mydata.csv")

or coalesce:

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df
   .coalesce(1)
   .write.format("com.databricks.spark.csv")
   .option("header", "true")
   .save("mydata.csv")

参考 https://stackoverflow.com/questions/31674530/write-single-csv-file-using-spark-csv

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