org.apache.spark.serializer.SerializationStream Scala Examples

The following examples show how to use org.apache.spark.serializer.SerializationStream. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.

Example 1

Source File: FileSystemPersistenceEngine.scala From drizzle-spark with Apache License 2.0

5 votes

package org.apache.spark.deploy.master

import java.io._

import scala.reflect.ClassTag

import org.apache.spark.internal.Logging
import org.apache.spark.serializer.{DeserializationStream, SerializationStream, Serializer}
import org.apache.spark.util.Utils



private[master] class FileSystemPersistenceEngine(
    val dir: String,
    val serializer: Serializer)
  extends PersistenceEngine with Logging {

  new File(dir).mkdir()

  override def persist(name: String, obj: Object): Unit = {
    serializeIntoFile(new File(dir + File.separator + name), obj)
  }

  override def unpersist(name: String): Unit = {
    val f = new File(dir + File.separator + name)
    if (!f.delete()) {
      logWarning(s"Error deleting ${f.getPath()}")
    }
  }

  override def read[T: ClassTag](prefix: String): Seq[T] = {
    val files = new File(dir).listFiles().filter(_.getName.startsWith(prefix))
    files.map(deserializeFromFile[T])
  }

  private def serializeIntoFile(file: File, value: AnyRef) {
    val created = file.createNewFile()
    if (!created) { throw new IllegalStateException("Could not create file: " + file) }
    val fileOut = new FileOutputStream(file)
    var out: SerializationStream = null
    Utils.tryWithSafeFinally {
      out = serializer.newInstance().serializeStream(fileOut)
      out.writeObject(value)
    } {
      fileOut.close()
      if (out != null) {
        out.close()
      }
    }
  }

  private def deserializeFromFile[T](file: File)(implicit m: ClassTag[T]): T = {
    val fileIn = new FileInputStream(file)
    var in: DeserializationStream = null
    try {
      in = serializer.newInstance().deserializeStream(fileIn)
      in.readObject[T]()
    } finally {
      fileIn.close()
      if (in != null) {
        in.close()
      }
    }
  }

}

Example 2

Source File: SerializerFactory.scala From spark-http-stream with BSD 2-Clause "Simplified" License

5 votes

package org.apache.spark.sql.execution.streaming.http

import java.nio.ByteBuffer
import org.apache.spark.serializer.SerializerInstance
import org.apache.spark.serializer.DeserializationStream
import org.apache.spark.serializer.SerializationStream
import java.io.OutputStream
import java.io.InputStream
import scala.reflect.ClassTag
import com.fasterxml.jackson.databind.ObjectMapper
import org.apache.spark.SparkConf
import org.apache.spark.serializer.JavaSerializer
import org.apache.spark.serializer.KryoSerializer


object SerializerFactory {
	val DEFAULT = new SerializerFactory {
		override def getSerializerInstance(serializerName: String): SerializerInstance = {
			serializerName.toLowerCase() match {
				case "kryo" ⇒
					new KryoSerializer(new SparkConf()).newInstance();
				case "java" ⇒
					new JavaSerializer(new SparkConf()).newInstance();
				case _ ⇒ throw new InvalidSerializerNameException(serializerName);
			}
		}
	}
}

trait SerializerFactory {
	def getSerializerInstance(serializerName: String): SerializerInstance;
}

Example 3

Source File: FileSystemPersistenceEngine.scala From sparkoscope with Apache License 2.0

5 votes

package org.apache.spark.deploy.master

import java.io._

import scala.reflect.ClassTag

import org.apache.spark.internal.Logging
import org.apache.spark.serializer.{DeserializationStream, SerializationStream, Serializer}
import org.apache.spark.util.Utils



private[master] class FileSystemPersistenceEngine(
    val dir: String,
    val serializer: Serializer)
  extends PersistenceEngine with Logging {

  new File(dir).mkdir()

  override def persist(name: String, obj: Object): Unit = {
    serializeIntoFile(new File(dir + File.separator + name), obj)
  }

  override def unpersist(name: String): Unit = {
    val f = new File(dir + File.separator + name)
    if (!f.delete()) {
      logWarning(s"Error deleting ${f.getPath()}")
    }
  }

  override def read[T: ClassTag](prefix: String): Seq[T] = {
    val files = new File(dir).listFiles().filter(_.getName.startsWith(prefix))
    files.map(deserializeFromFile[T])
  }

  private def serializeIntoFile(file: File, value: AnyRef) {
    val created = file.createNewFile()
    if (!created) { throw new IllegalStateException("Could not create file: " + file) }
    val fileOut = new FileOutputStream(file)
    var out: SerializationStream = null
    Utils.tryWithSafeFinally {
      out = serializer.newInstance().serializeStream(fileOut)
      out.writeObject(value)
    } {
      fileOut.close()
      if (out != null) {
        out.close()
      }
    }
  }

  private def deserializeFromFile[T](file: File)(implicit m: ClassTag[T]): T = {
    val fileIn = new FileInputStream(file)
    var in: DeserializationStream = null
    try {
      in = serializer.newInstance().deserializeStream(fileIn)
      in.readObject[T]()
    } finally {
      fileIn.close()
      if (in != null) {
        in.close()
      }
    }
  }

}

Example 4

Source File: FileSystemPersistenceEngine.scala From multi-tenancy-spark with Apache License 2.0

5 votes

package org.apache.spark.deploy.master

import java.io._

import scala.reflect.ClassTag

import org.apache.spark.internal.Logging
import org.apache.spark.serializer.{DeserializationStream, SerializationStream, Serializer}
import org.apache.spark.util.Utils



private[master] class FileSystemPersistenceEngine(
    val dir: String,
    val serializer: Serializer)
  extends PersistenceEngine with Logging {

  new File(dir).mkdir()

  override def persist(name: String, obj: Object): Unit = {
    serializeIntoFile(new File(dir + File.separator + name), obj)
  }

  override def unpersist(name: String): Unit = {
    val f = new File(dir + File.separator + name)
    if (!f.delete()) {
      logWarning(s"Error deleting ${f.getPath()}")
    }
  }

  override def read[T: ClassTag](prefix: String): Seq[T] = {
    val files = new File(dir).listFiles().filter(_.getName.startsWith(prefix))
    files.map(deserializeFromFile[T])
  }

  private def serializeIntoFile(file: File, value: AnyRef) {
    val created = file.createNewFile()
    if (!created) { throw new IllegalStateException("Could not create file: " + file) }
    val fileOut = new FileOutputStream(file)
    var out: SerializationStream = null
    Utils.tryWithSafeFinally {
      out = serializer.newInstance().serializeStream(fileOut)
      out.writeObject(value)
    } {
      fileOut.close()
      if (out != null) {
        out.close()
      }
    }
  }

  private def deserializeFromFile[T](file: File)(implicit m: ClassTag[T]): T = {
    val fileIn = new FileInputStream(file)
    var in: DeserializationStream = null
    try {
      in = serializer.newInstance().deserializeStream(fileIn)
      in.readObject[T]()
    } finally {
      fileIn.close()
      if (in != null) {
        in.close()
      }
    }
  }

}

Example 5

Source File: FileSystemPersistenceEngine.scala From spark1.52 with Apache License 2.0

5 votes

package org.apache.spark.deploy.master

import java.io._

import scala.reflect.ClassTag

import org.apache.spark.Logging
import org.apache.spark.serializer.{DeserializationStream, SerializationStream, Serializer}
import org.apache.spark.util.Utils

private[master] class FileSystemPersistenceEngine(
    val dir: String,
    val serializer: Serializer)
  extends PersistenceEngine with Logging {

  new File(dir).mkdir()

  override def persist(name: String, obj: Object): Unit = {
    serializeIntoFile(new File(dir + File.separator + name), obj)
  }

  override def unpersist(name: String): Unit = {
    new File(dir + File.separator + name).delete()
  }

  override def read[T: ClassTag](prefix: String): Seq[T] = {
    val files = new File(dir).listFiles().filter(_.getName.startsWith(prefix))
    files.map(deserializeFromFile[T])
  }

  private def serializeIntoFile(file: File, value: AnyRef) {
    val created = file.createNewFile()
    if (!created) { throw new IllegalStateException("Could not create file: " + file) }
    val fileOut = new FileOutputStream(file)
    var out: SerializationStream = null
    Utils.tryWithSafeFinally {
      out = serializer.newInstance().serializeStream(fileOut)
      out.writeObject(value)
    } {
      fileOut.close()
      if (out != null) {
        out.close()
      }
    }
  }

  private def deserializeFromFile[T](file: File)(implicit m: ClassTag[T]): T = {
    val fileIn = new FileInputStream(file)
    var in: DeserializationStream = null
    try {
      in = serializer.newInstance().deserializeStream(fileIn)
      in.readObject[T]()
    } finally {
      fileIn.close()
      if (in != null) {
        in.close()
      }
    }
  }

}

Example 6

Source File: FileSystemPersistenceEngine.scala From Spark-2.3.1 with Apache License 2.0

5 votes

package org.apache.spark.deploy.master

import java.io._

import scala.reflect.ClassTag

import org.apache.spark.internal.Logging
import org.apache.spark.serializer.{DeserializationStream, SerializationStream, Serializer}
import org.apache.spark.util.Utils



private[master] class FileSystemPersistenceEngine(
    val dir: String,
    val serializer: Serializer)
  extends PersistenceEngine with Logging {

  new File(dir).mkdir()

  override def persist(name: String, obj: Object): Unit = {
    serializeIntoFile(new File(dir + File.separator + name), obj)
  }

  override def unpersist(name: String): Unit = {
    val f = new File(dir + File.separator + name)
    if (!f.delete()) {
      logWarning(s"Error deleting ${f.getPath()}")
    }
  }

  override def read[T: ClassTag](prefix: String): Seq[T] = {
    val files = new File(dir).listFiles().filter(_.getName.startsWith(prefix))
    files.map(deserializeFromFile[T])
  }

  private def serializeIntoFile(file: File, value: AnyRef) {
    val created = file.createNewFile()
    if (!created) { throw new IllegalStateException("Could not create file: " + file) }
    val fileOut = new FileOutputStream(file)
    var out: SerializationStream = null
    Utils.tryWithSafeFinally {
      out = serializer.newInstance().serializeStream(fileOut)
      out.writeObject(value)
    } {
      fileOut.close()
      if (out != null) {
        out.close()
      }
    }
  }

  private def deserializeFromFile[T](file: File)(implicit m: ClassTag[T]): T = {
    val fileIn = new FileInputStream(file)
    var in: DeserializationStream = null
    try {
      in = serializer.newInstance().deserializeStream(fileIn)
      in.readObject[T]()
    } finally {
      fileIn.close()
      if (in != null) {
        in.close()
      }
    }
  }

}

Example 7

Source File: FileSystemPersistenceEngine.scala From BigDatalog with Apache License 2.0

5 votes

package org.apache.spark.deploy.master

import java.io._

import scala.reflect.ClassTag

import org.apache.spark.Logging
import org.apache.spark.serializer.{DeserializationStream, SerializationStream, Serializer}
import org.apache.spark.util.Utils



private[master] class FileSystemPersistenceEngine(
    val dir: String,
    val serializer: Serializer)
  extends PersistenceEngine with Logging {

  new File(dir).mkdir()

  override def persist(name: String, obj: Object): Unit = {
    serializeIntoFile(new File(dir + File.separator + name), obj)
  }

  override def unpersist(name: String): Unit = {
    val f = new File(dir + File.separator + name)
    if (!f.delete()) {
      logWarning(s"Error deleting ${f.getPath()}")
    }
  }

  override def read[T: ClassTag](prefix: String): Seq[T] = {
    val files = new File(dir).listFiles().filter(_.getName.startsWith(prefix))
    files.map(deserializeFromFile[T])
  }

  private def serializeIntoFile(file: File, value: AnyRef) {
    val created = file.createNewFile()
    if (!created) { throw new IllegalStateException("Could not create file: " + file) }
    val fileOut = new FileOutputStream(file)
    var out: SerializationStream = null
    Utils.tryWithSafeFinally {
      out = serializer.newInstance().serializeStream(fileOut)
      out.writeObject(value)
    } {
      fileOut.close()
      if (out != null) {
        out.close()
      }
    }
  }

  private def deserializeFromFile[T](file: File)(implicit m: ClassTag[T]): T = {
    val fileIn = new FileInputStream(file)
    var in: DeserializationStream = null
    try {
      in = serializer.newInstance().deserializeStream(fileIn)
      in.readObject[T]()
    } finally {
      fileIn.close()
      if (in != null) {
        in.close()
      }
    }
  }

}