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[SPARK-12953][Examples]RDDRelation writer set overwrite mode #10864

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[SPARK-12953][Examples]RDDRelation writer set overwrite mode #10864

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7 changes: 3 additions & 4 deletions examples/src/main/scala/org/apache/spark/examples/sql/RDDRelation.scala
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Expand Up @@ -19,8 +19,7 @@
package org.apache.spark.examples.sql

import org.apache.spark.{SparkConf, SparkContext}
import org.apache.spark.sql.SQLContext
import org.apache.spark.sql.functions._
import org.apache.spark.sql.{SaveMode, SQLContext}

// One method for defining the schema of an RDD is to make a case class with the desired column
// names and types.
Expand Down Expand Up @@ -58,8 +57,8 @@ object RDDRelation {
// Queries can also be written using a LINQ-like Scala DSL.
df.where($"key" === 1).orderBy($"value".asc).select($"key").collect().foreach(println)

// Write out an RDD as a parquet file.
df.write.parquet("pair.parquet")
// Write out an RDD as a parquet file with overwrite mode.
df.write.mode(SaveMode.Overwrite).parquet("pair.parquet")

// Read in parquet file. Parquet files are self-describing so the schmema is preserved.
val parquetFile = sqlContext.read.parquet("pair.parquet")
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