本文整理汇总了Scala中org.apache.hadoop.util.ReflectionUtils类的典型用法代码示例。如果您正苦于以下问题：Scala ReflectionUtils类的具体用法？Scala ReflectionUtils怎么用？Scala ReflectionUtils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ReflectionUtils类的1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，您的评价将有助于系统推荐出更棒的Scala代码示例。
示例1: BaseOutputFormat
//设置package包名称以及导入依赖的类
package kr.acon.lib.io
import java.io.DataOutputStream
import org.apache.hadoop.fs.FileSystem
import org.apache.hadoop.io.compress.GzipCodec
import org.apache.hadoop.mapred.FileOutputFormat
import org.apache.hadoop.mapred.JobConf
import org.apache.hadoop.mapred.RecordWriter
import org.apache.hadoop.util.Progressable
import org.apache.hadoop.util.ReflectionUtils
import it.unimi.dsi.fastutil.longs.LongOpenHashBigSet
abstract class BaseOutputFormat extends FileOutputFormat[Long, LongOpenHashBigSet] {
@inline def getRecordWriter(out: DataOutputStream): RecordWriter[Long, LongOpenHashBigSet]
@inline override def getRecordWriter(ignored: FileSystem,
job: JobConf,
name: String,
progress: Progressable) = {
val isCompressed = FileOutputFormat.getCompressOutput(job)
if (!isCompressed) {
val file = FileOutputFormat.getTaskOutputPath(job, name)
val fs = file.getFileSystem(job)
val fileOut = fs.create(file, progress)
getRecordWriter(fileOut)
} else {
val codecClass = FileOutputFormat.getOutputCompressorClass(job, classOf[GzipCodec])
val codec = ReflectionUtils.newInstance(codecClass, job)
val file = FileOutputFormat.getTaskOutputPath(job, name + codec.getDefaultExtension())
val fs = file.getFileSystem(job)
val fileOut = fs.create(file, progress)
val fileOutWithCodec = new DataOutputStream(codec.createOutputStream(fileOut))
getRecordWriter(fileOutWithCodec)
}
}
}