Scala FileOutputFormat类代码示例

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本文整理汇总了Scala中org.apache.hadoop.mapreduce.lib.output.FileOutputFormat类的典型用法代码示例。如果您正苦于以下问题：Scala FileOutputFormat类的具体用法？Scala FileOutputFormat怎么用？Scala FileOutputFormat使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了FileOutputFormat类的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Scala代码示例。

示例1: FrequencyMapReducer

//设置package包名称以及导入依赖的类
package com.argcv.cse8803.mapreducebasic

import com.argcv.valhalla.console.ColorForConsole._
import com.argcv.valhalla.utils.Awakable
import org.apache.hadoop.fs.Path
import org.apache.hadoop.io.{IntWritable, Text}
import org.apache.hadoop.mapreduce.Job
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat


object FrequencyMapReducer extends Awakable {

  def main(args: Array[String]): Unit = {
    // create a hadoop job and set main class
    val job = Job.getInstance()
    job.setJarByClass(FrequencyMapReducer.getClass)
    job.setJobName("Frequency")

    // set the input & output path
    FileInputFormat.addInputPath(job, new Path(args.head))
    FileOutputFormat.setOutputPath(job, new Path(s"${args(1)}-${System.currentTimeMillis()}"))

    // set mapper & reducer
    job.setMapperClass(FrequencyMapper.instance)
    job.setReducerClass(FrequencyReducer.instance)

    // specify the type of the output
    job.setOutputKeyClass(new Text().getClass)
    job.setOutputValueClass(new IntWritable().getClass)

    // run
    logger.info(s"job finished, status [${if (job.waitForCompletion(true)) "OK".withColor(GREEN) else "FAILED".withColor(RED)}]")
  }

}

开发者ID:yuikns，项目名称:cse8803，代码行数:37，代码来源:FrequencyMapReducer.scala

示例2: FrequencyMapReducer

//设置package包名称以及导入依赖的类
package com.argcv.iphigenia.example.hdfs.mr

import com.argcv.valhalla.console.ColorForConsole._
import com.argcv.valhalla.utils.Awakable
import org.apache.hadoop.fs.Path
import org.apache.hadoop.io.{ IntWritable, Text }
import org.apache.hadoop.mapreduce.Job
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat


object FrequencyMapReducer extends Awakable {

  def main(args: Array[String]): Unit = {
    // create a hadoop job and set main class
    val job = Job.getInstance()
    job.setJarByClass(FrequencyMapReducer.getClass)
    job.setJobName("Frequency")

    // set the input & output path
    FileInputFormat.addInputPath(job, new Path(args.head))
    FileOutputFormat.setOutputPath(job, new Path(s"${args(1)}-${System.currentTimeMillis()}"))

    // set mapper & reducer
    job.setMapperClass(FrequencyMapper.instance)
    job.setReducerClass(FrequencyReducer.instance)

    // specify the type of the output
    job.setOutputKeyClass(new Text().getClass)
    job.setOutputValueClass(new IntWritable().getClass)

    // run
    logger.info(s"job finished, status [${if (job.waitForCompletion(true)) "OK".withColor(GREEN) else "FAILED".withColor(RED)}]")
  }

}

开发者ID:yuikns，项目名称:iphigenia，代码行数:37，代码来源:FrequencyMapReducer.scala

示例3: SuccinctAnnotationOutputFormat

//设置package包名称以及导入依赖的类
package edu.berkeley.cs.succinct.annot.serde

import java.io.File

import org.apache.hadoop.io.NullWritable
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat
import org.apache.hadoop.mapreduce.{RecordWriter, TaskAttemptContext}

class SuccinctAnnotationOutputFormat
  extends FileOutputFormat[NullWritable, (Int, Iterator[(String, String, String)])] {
  override def getRecordWriter(job: TaskAttemptContext):
  RecordWriter[NullWritable, (Int, Iterator[(String, String, String)])] = {
    val conf = job.getConfiguration
    val ignoreParseErrors = conf.get("succinct.annotations.ignoreParseErrors", "true").toBoolean
    val serializeInMemory = conf.get("succinct.annotations.serializeInMemory", "true").toBoolean
    val dirs = conf.get("spark.local.dir", System.getProperty("java.io.tmpdir")).split(",")
    println("ignoreParseErrors = " + ignoreParseErrors + " serializeInMemory = " + serializeInMemory
      + "Spark local dir = " + dirs(0) + " persistInMemory = false")
    val path = FileOutputFormat.getOutputPath(job)
    new SuccinctAnnotationRecordWriter(path, ignoreParseErrors, conf, (serializeInMemory, new File(dirs(0))))
  }
}

开发者ID:anuragkh，项目名称:annotation-search，代码行数:23，代码来源:SuccinctAnnotationOutputFormat.scala

注：本文中的org.apache.hadoop.mapreduce.lib.output.FileOutputFormat类示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。