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 config

This package contains the configuration classes for all components of a Driver.

This package contains the configuration classes for all components of a Driver. Configuration is read from application.conf and provided to the developer as a com.here.platform.data.processing.driver.config.CompleteConfig instance, when the driver is setup.

Definition Classes: driver

package deltasets

Definition Classes: driver

package filter

Definition Classes: driver

package impl

Definition Classes: driver

package job

Definition Classes: driver

package modes

Definition Classes: driver

package runner

Definition Classes: driver

Default

DeltaDriverTask

DeltaDriverTaskBuilder

DeltaSetup

DeltaSimpleSetup

Driver

DriverBuilder

DriverContext

DriverSetup

DriverSetupManual

DriverSetupWithBuilder

DriverTask

Executor

Fingerprints

IncrementalCompilerExecutor

MultiCompilerTaskBuilder

MultiModeDriverTask

NonIncrementalCompilerExecutor

PartitionKeyFiltering

StatefulCompilerExecutor

TaskBuilder

TaskResult

com.here.platform.data.processing.driver

DriverTask

Companion object DriverTask

trait DriverTask extends AnyRef

A DriverTask processes input catalogs, given pairs of versions, and publishes the result to an output catalog, incrementing its version. One or more DriverTasks are attached to a Driver, which executes these DriverTasks sequentially.

See also: Driver

Linear Supertypes

AnyRef, Any

Known Subclasses

DeltaDriverTask, MultiModeDriverTask, CommitProducer, FingerprintsProducer

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Abstract Value Members

abstract def id: Id
Unique identifier of the com.here.platform.data.processing.driver.DriverTask
abstract def run(): TaskResult
Runs the com.here.platform.data.processing.driver.DriverTask.
Runs the com.here.platform.data.processing.driver.DriverTask.
returns
the com.here.platform.data.processing.driver.TaskResult with the result of compilation, if produced.

Concrete Value Members

final def !=(arg0: Any): Boolean

Definition Classes
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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
Any
def cleanUp(): Unit
Performs any clean-up operations required.
Performs any clean-up operations required. Is called after the TaskResult has been evaluated.
def clone(): AnyRef

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protected[lang]
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@throws( ... ) @native()
final def eq(arg0: AnyRef): Boolean

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def equals(arg0: Any): Boolean

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def finalize(): Unit

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protected[lang]
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@throws( classOf[java.lang.Throwable] )
final def getClass(): Class[_]

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@native()
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Packages

DriverTask

Companion object DriverTask

trait DriverTask extends AnyRef

Abstract Value Members

Concrete Value Members

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Packages

DriverTask 

Companion object DriverTask

trait DriverTask extends AnyRef

Abstract Value Members

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Inherited from AnyRef

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DriverTask