本文整理了Java中org.apache.spark.sql.DataFrame.rdd()方法的一些代码示例，展示了DataFrame.rdd()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。DataFrame.rdd()方法的具体详情如下：
包路径：org.apache.spark.sql.DataFrame
类名称：DataFrame
方法名：rdd

DataFrame.rdd介绍

暂无

代码示例

代码示例来源：origin: amidst/toolbox

static JavaRDD<DataInstance> toDataInstanceRDD(DataFrame data, Attributes attributes) {
  JavaRDD<double[]> rawRDD = data.rdd()
               .toJavaRDD()
               .map( row -> transformRow2DataInstance(row, attributes) );
  return rawRDD.map(v ->  new DataInstanceFromDataRow( new DataRowSpark(v, attributes) ) );
}

代码示例来源：origin: org.wso2.carbon.analytics/org.wso2.carbon.analytics.spark.core

private void writeDataFrameToDAL(DataFrame data) {
  if (this.preserveOrder) {
    logDebug("Inserting data with order preserved! Each partition will be written using separate jobs.");
    for (int i = 0; i < data.rdd().partitions().length; i++) {
      data.sqlContext().sparkContext().runJob(data.rdd(),
                          new AnalyticsWritingFunction(this.tenantId, this.tableName, data.schema(),
                                         this.globalTenantAccess, this.schemaString, this.primaryKeys, this.mergeFlag,
                                         this.recordStore, this.recordBatchSize), CarbonScalaUtils.getNumberSeq(i, i + 1),
                          false, ClassTag$.MODULE$.Unit());
    }
  } else {
    data.foreachPartition(new AnalyticsWritingFunction(this.tenantId, this.tableName, data.schema(),
                              this.globalTenantAccess, this.schemaString, this.primaryKeys, this.mergeFlag,
                              this.recordStore, this.recordBatchSize));
  }
}