Packages

package root

Definition Classes: root

package com

Definition Classes: root

package here

Definition Classes: com

package platform

Definition Classes: here

package data

Definition Classes: platform

package processing

This package provides the Data Processing Library for building distributed data processing applications.

A Runner both implements the interface with the environment for an application to run, and starts the application. The application, in turn, is driven by a Driver, that controls and performs the distributed processing.

Choose a Runner best suited for the environment where the application runs.

The Driver performs one of more tasks which read layers from input catalogs and write to one or more layers of an output catalog.

The main entry point in the processing library is the com.here.platform.data.processing.driver.DriverBuilder class where you can add different kinds of tasks to the driver. The driver runs the tasks, and commits the final results to the output catalog.

Tasks are implemented using one or more compilers.

The simplest compiler is the direct compiler which maps each input tile to N output tiles. The application needs to define com.here.platform.data.processing.compiler.Direct1ToNCompiler.

Other more complex compilation patterns are based on some kind of dependency tracking between input partitions and output partitions.

The processing Library supports the following patterns:

- com.here.platform.data.processing.compiler.NonIncrementalCompiler: non-incremental compilation only - com.here.platform.data.processing.compiler.DepCompiler: non-incremental dependency calculation and incremental compilation - com.here.platform.data.processing.compiler.IncrementalDepCompiler: incremental dependency calculation and compilation - com.here.platform.data.processing.compiler.Direct1ToNCompiler: incremental compilation where every output tile depends only on one input tile, and this mapping is independent from tile content - com.here.platform.data.processing.compiler.DirectMToNCompiler: incremental compilation where every output tile depends on multiple input tiles, and this mapping is independent from tile content - com.here.platform.data.processing.compiler.MapGroupCompiler: incremental compilation where every output tile can depend on multiple input tiles, and this mapping depend on the tile content - com.here.platform.data.processing.compiler.RefTreeCompiler: fully-managed two phases incremental compilation that can resolve references between input partitions. Input/Output dependency management is implemented and the developer doesn't need to provide this logic

The application's main object normally mixes in the a runner trait (like PipelineRunner) to setup the Driver, and interfaces with the environment where the application is run. See the Main classes in the example compilers for more details.

com.here.platform.data.processing.catalog, com.here.platform.data.processing.blobstore, and com.here.platform.data.processing.publisher contain utilities for accessing catalogs and payloads in a Spark-friendly way, providing an RDD-based abstraction over data and metadata. These classes are used by the processing library, but can also be used independently.

Definition Classes: data

package driver

Definition Classes: processing

package impl

Definition Classes: driver

package state

Definition Classes: impl

package partition

Definition Classes: state

package protobuf

Definition Classes: partition

AnyStatePartitionSerializer

JavaStatePartitionSerializer

StatePartitionSerializer

com.here.platform.data.processing.driver.impl.state.partition

AnyStatePartitionSerializer

class AnyStatePartitionSerializer[K, V] extends StatePartitionSerializer[K, V]

Generic StatePartitionSerializer which can be used to serialize any RDD[K,V] using the Spark default serializer. It should be noted that the resulting serialization is fairly fragile, especially with Kryo the results depend on the order of Kryo class registration and weird deserialization errors can be thrown if that order changes.

K: key type
V: value type

Linear Supertypes

StatePartitionSerializer[K, V], Serializable, AnyRef, Any

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new AnyStatePartitionSerializer()(implicit arg0: ClassTag[K], arg1: ClassTag[V])

Value Members

final def !=(arg0: Any): Boolean
Definition Classes
AnyRef → Any
final def ##: Int
Definition Classes
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final def ==(arg0: Any): Boolean
Definition Classes
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final def asInstanceOf[T0]: T0
Definition Classes
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def clone(): AnyRef
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protected[lang]
Definition Classes
AnyRef
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@throws(classOf[java.lang.CloneNotSupportedException]) @IntrinsicCandidate() @native()
def deserialize(bytes: Array[Byte]): Iterator[(K, V)]
Definition Classes
AnyStatePartitionSerializer → StatePartitionSerializer
final def eq(arg0: AnyRef): Boolean
Definition Classes
AnyRef
def equals(arg0: AnyRef): Boolean
Definition Classes
AnyRef → Any
final def getClass(): Class[_ <: AnyRef]
Definition Classes
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@IntrinsicCandidate() @native()
def hashCode(): Int
Definition Classes
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Annotations
@IntrinsicCandidate() @native()
final def isInstanceOf[T0]: Boolean
Definition Classes
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final def ne(arg0: AnyRef): Boolean
Definition Classes
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final def notify(): Unit
Definition Classes
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@IntrinsicCandidate() @native()
final def notifyAll(): Unit
Definition Classes
AnyRef
Annotations
@IntrinsicCandidate() @native()
def serialize(values: Iterator[(K, V)]): Array[Byte]
Definition Classes
AnyStatePartitionSerializer → StatePartitionSerializer
final def synchronized[T0](arg0: => T0): T0
Definition Classes
AnyRef
def toString(): String
Definition Classes
AnyRef → Any
final def wait(arg0: Long, arg1: Int): Unit
Definition Classes
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@throws(classOf[java.lang.InterruptedException])
final def wait(arg0: Long): Unit
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@throws(classOf[java.lang.InterruptedException]) @native()
final def wait(): Unit
Definition Classes
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@throws(classOf[java.lang.InterruptedException])

Deprecated Value Members

def finalize(): Unit
Attributes
protected[lang]
Definition Classes
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@throws(classOf[java.lang.Throwable]) @Deprecated
Deprecated
(Since version 9)

Packages

AnyStatePartitionSerializer

class AnyStatePartitionSerializer[K, V] extends StatePartitionSerializer[K, V]

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Deprecated Value Members

Inherited from StatePartitionSerializer[K, V]

Inherited from Serializable

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AnyStatePartitionSerializer

class AnyStatePartitionSerializer[K, V] extends StatePartitionSerializer[K, V]

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Inherited from StatePartitionSerializer[K, V]

Inherited from Serializable

Inherited from AnyRef

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AnyStatePartitionSerializer