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 modes

Definition Classes: driver

ContextAwareMode

FingerprintsChecking

IncrementalBaseMode

IncrementalMode

IncrementalStatefulMode

MultiExecutorsBaseMode

MultiExecutorsIncrementalMode

MultiExecutorsNonIncrementalMode

NonIncrementalBaseMode

NonIncrementalMode

NonIncrementalStatefulMode

PreviousVersionsChecking

SkipIfNoChangesMode

TaskMode

com.here.platform.data.processing.driver.modes

NonIncrementalBaseMode

abstract class NonIncrementalBaseMode extends ContextAwareMode

This TaskMode always runs the compiler and is always applicable. Modes bases on this class should be considered as worse case scenario modes. This is the mode that should run in case no better applicable mode is found.

Linear Supertypes

ContextAwareMode, TaskMode, AnyRef, Any

Known Subclasses

NonIncrementalMode, NonIncrementalStatefulMode

Ordering

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By Inheritance

Inherited

NonIncrementalBaseMode
ContextAwareMode
TaskMode
AnyRef
Any

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Visibility

Public
All

Instance Constructors

new NonIncrementalBaseMode(context: DriverContext, id: String, in: InputLayers with InputPartitioner, out: OutputLayers with OutputPartitioner)
context
the com.here.platform.data.processing.driver.DriverContext relative to this mode
id
the identifier of the com.here.platform.data.processing.driver.DriverTask the mode belongs to, for logging reasons
in
the definition of the input catalogs, layers and partitioner
out
the definition of the output catalog, layers and partitioner

Abstract Value Members

abstract def actualRun(): RDD[(Key, Commit)]

Attributes
protected

Concrete Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws( ... ) @native()
val context: DriverContext

Definition Classes
ContextAwareMode
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def finalize(): Unit

Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
Annotations
@native()
def hashCode(): Int

Definition Classes
AnyRef → Any
Annotations
@native()
val inUtils: InputCatalogUtils

Attributes
protected
def isApplicable: Boolean
This mode is always applicable, as it's always possible to compile the input catalogs from scratch.
This mode is always applicable, as it's always possible to compile the input catalogs from scratch.
returns
if the mode is applicable, so if the mode should run and its result evaluated

Definition Classes
NonIncrementalBaseMode → TaskMode
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
Annotations
@native()
final def notifyAll(): Unit

Definition Classes
AnyRef
Annotations
@native()
val outUtils: OutputCatalogUtils

Attributes
protected
val parallelism: Int

Attributes
protected
Definition Classes
ContextAwareMode
def run(): TaskResult
Runs the compiler ignoring changes and compiling always the whole input catalogs.
Runs the compiler ignoring changes and compiling always the whole input catalogs.
returns
the result of the compilation

Definition Classes
NonIncrementalBaseMode → TaskMode
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... ) @native()

Packages

NonIncrementalBaseMode

abstract class NonIncrementalBaseMode extends ContextAwareMode

Instance Constructors

Abstract Value Members

Concrete Value Members

Inherited from ContextAwareMode

Inherited from TaskMode

Inherited from AnyRef

Inherited from Any

Ungrouped

Packages

NonIncrementalBaseMode 

abstract class NonIncrementalBaseMode extends ContextAwareMode

Instance Constructors

Abstract Value Members

Concrete Value Members

Inherited from ContextAwareMode

Inherited from TaskMode

Inherited from AnyRef

Inherited from Any

Ungrouped

NonIncrementalBaseMode