Scala TableInputFormat类代码示例

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本文整理汇总了Scala中org.apache.hadoop.hbase.mapreduce.TableInputFormat类的典型用法代码示例。如果您正苦于以下问题：Scala TableInputFormat类的具体用法？Scala TableInputFormat怎么用？Scala TableInputFormat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TableInputFormat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: HBaseHelloWorld

//设置package包名称以及导入依赖的类
import org.apache.spark._
import org.apache.hadoop._

import org.apache.hadoop.hbase.client.{HBaseAdmin, Result}
import org.apache.hadoop.hbase.{ HBaseConfiguration, HTableDescriptor }
import org.apache.hadoop.hbase.mapreduce.TableInputFormat
import org.apache.hadoop.hbase.io.ImmutableBytesWritable

import org.apache.hadoop.hbase.client.{HBaseAdmin,HTable,Put,Get}
import org.apache.hadoop.hbase.util.Bytes

object HBaseHelloWorld {
  def main(args: Array[String]): Unit = {
    val sparkConf = new SparkConf().setAppName("HBaseRead")
    val sc = new SparkContext(sparkConf)
    val conf = HBaseConfiguration.create()
    val tableName = "enterprises"

    conf.set("hbase.master", "localhost:60000")
    conf.setInt("timeout", 120000)
    conf.set(TableInputFormat.INPUT_TABLE, tableName)

    val admin = new HBaseAdmin(conf)
    if (!admin.isTableAvailable(tableName)) {
      val tableDesc = new HTableDescriptor(tableName)
      admin.createTable(tableDesc)
    }

    val hBaseRDD = sc.newAPIHadoopRDD(conf, classOf[TableInputFormat], classOf[ImmutableBytesWritable], classOf[Result])
    println("Number of Records found : " + hBaseRDD.count())

    val pairs = hBaseRDD.map(s => (s, 1))
    val counts = pairs.reduceByKey((a, b) => a + b)

    sc.stop()
  }
}

开发者ID:octoai，项目名称:octo-spark，代码行数:38，代码来源:HBaseHelloWorld.scala

示例2: HBaseReader

//设置package包名称以及导入依赖的类
import org.apache.hadoop.hbase.client.{ HBaseAdmin, Result }
import org.apache.hadoop.hbase.HTableDescriptor
import org.apache.hadoop.hbase.mapreduce.TableInputFormat
import org.apache.hadoop.hbase.io.ImmutableBytesWritable
import org.apache.hadoop.hbase.util.Bytes



object HBaseReader {

  def main(args: Array[String]) {

    if(args.size != 1){
      println("Usage: HBaseReader <table name>")
      System.exit(-1)
    }
    
    val tableName = args(0)
    val master = ""

    val sc = Connection.createSparkConf()
    val conf = Connection.createHBaseConf()

    val admin = new HBaseAdmin(conf)
    if (!admin.isTableAvailable(tableName)) {
      val tableDesc = new HTableDescriptor(tableName)
      admin.createTable(tableDesc)
    }
    
    conf.set(TableInputFormat.INPUT_TABLE, tableName)
    val hBaseRDD = sc.newAPIHadoopRDD(conf, classOf[TableInputFormat],
      classOf[ImmutableBytesWritable],
      classOf[Result])

    println("Number of Records found : " + hBaseRDD.count())

    val stocksRdd = hBaseRDD.map {
      case (key: ImmutableBytesWritable, value: Result) =>
        Stock(
          new String(key.get),
          new String(value.getValue(Bytes.toBytes("prices"), Bytes.toBytes("Open"))),
          new String(value.getValue(Bytes.toBytes("prices"), Bytes.toBytes("Close"))),
          new String(value.getValue(Bytes.toBytes("prices"), Bytes.toBytes("High"))),
          new String(value.getValue(Bytes.toBytes("prices"), Bytes.toBytes("Low"))),
          new String(value.getValue(Bytes.toBytes("prices"), Bytes.toBytes("AdjClose"))),
          new String(value.getValue(Bytes.toBytes("volume"), Bytes.toBytes("vol"))))
    }
    stocksRdd.take(10).foreach(println)

  }
}

开发者ID:Einext，项目名称:spark-projects，代码行数:52，代码来源:HBaseReader.scala

示例3: HbaseExample

//设置package包名称以及导入依赖的类
package com.hortonworks.examples

import org.apache.hadoop.hbase.HBaseConfiguration
import org.apache.hadoop.hbase.client.{Get, HBaseAdmin, HTable}
import org.apache.hadoop.hbase.mapreduce.{TableInputFormat, TableOutputFormat}
import org.apache.hadoop.hbase.util.Bytes
import org.apache.spark.{SparkConf, SparkContext}

object HbaseExample {

  def main(arg: Array[String]) {

    if (arg.length < 2) {
      System.err.println("Usage: HbaseExample Hbase-Table RowKey")
      System.exit(1)
    }

    val jobName = "SparkHBaseTest"
    val conf = new SparkConf().setAppName(jobName)
    val sc = new SparkContext(conf)

    val hbaseTable = arg(0)
    val rowKey = arg(1)

    println("hbase table: " + hbaseTable)
    println("row key to get: " + rowKey)

    runTest(hbaseTable, rowKey, sc)
  }

  def runTest(hbaseTable: String, rowKey: String, sc: SparkContext): Null = {
    val hconf = HBaseConfiguration.create()

    hconf.set(TableOutputFormat.OUTPUT_TABLE, hbaseTable)
    hconf.set(TableInputFormat.INPUT_TABLE, hbaseTable)
    HBaseAdmin.checkHBaseAvailable(hconf)
    val htable = new HTable(hconf, hbaseTable)
    println("Hbase table connection established")
    println(htable.getTableDescriptor)
    println(htable.get(new Get(Bytes.toBytes(rowKey))).getMap)
    println("Getting count of records in table now...")
    val hBaseRDD = sc.newAPIHadoopRDD(hconf, classOf[TableInputFormat],
      classOf[org.apache.hadoop.hbase.io.ImmutableBytesWritable],
      classOf[org.apache.hadoop.hbase.client.Result])
    println(hBaseRDD.count())
    println("Done!")
    null
  }
}

开发者ID:clukasikhw，项目名称:kerberized-spark-hbase-hdp2.4-example，代码行数:50，代码来源:HbaseExample.scala

注：本文中的org.apache.hadoop.hbase.mapreduce.TableInputFormat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。