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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.
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
FingerprintsProducer
StateSerializer

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

FingerprintsProducer

Companion object FingerprintsProducer

class FingerprintsProducer extends CommitProducer with ContextLogging

Commit producer that publishes in the state layer the fingerprints of the compilation, constructed from both source code and configuration.

Linear Supertypes

ContextLogging, CommitProducer, DriverTask, AnyRef, Any

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FingerprintsProducer
ContextLogging
CommitProducer
DriverTask
AnyRef
Any

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Instance Constructors

new FingerprintsProducer(context: DriverContext, id: Id = "fingerprintsproducer")
context
The driver context.
id
The unique identifier of the com.here.platform.data.processing.driver.DriverTask.

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 classForLogger: Class[_]
Override this to change the class that is displayed in logs.
Override this to change the class that is displayed in logs.
Attributes
protected
Definition Classes
ContextLogging
def cleanUp(): Unit
Performs any clean-up operations required.
Performs any clean-up operations required. Is called after the TaskResult has been evaluated.
Definition Classes
DriverTask
def clone(): AnyRef
Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.CloneNotSupportedException]) @IntrinsicCandidate() @native()
val context: DriverContext
The driver context, needed to access the output catalog, the uploader and the Spark context.
The driver context, needed to access the output catalog, the uploader and the Spark context.
Definition Classes
FingerprintsProducer → CommitProducer
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
AnyRef → Any
Annotations
@IntrinsicCandidate() @native()
def hashCode(): Int
Definition Classes
AnyRef → Any
Annotations
@IntrinsicCandidate() @native()
val id: Id
Unique identifier of the com.here.platform.data.processing.driver.DriverTask
Unique identifier of the com.here.platform.data.processing.driver.DriverTask
Definition Classes
FingerprintsProducer → DriverTask
final def isInstanceOf[T0]: Boolean
Definition Classes
Any
final lazy val logger: ContextAwareLogger
The logger to use for normal and context-aware messages.
The logger to use for normal and context-aware messages.
Attributes
protected
Definition Classes
ContextLogging
final def ne(arg0: AnyRef): Boolean
Definition Classes
AnyRef
final def notify(): Unit
Definition Classes
AnyRef
Annotations
@IntrinsicCandidate() @native()
final def notifyAll(): Unit
Definition Classes
AnyRef
Annotations
@IntrinsicCandidate() @native()
def produceCommits(): Map[Key, Commit]
Produces the Commit objects for this CommitProducer.
Produces the Commit objects for this CommitProducer.
returns
a map with the Commit objects.
Definition Classes
FingerprintsProducer → CommitProducer
def publishPayloads(payloads: Map[Key, Option[Payload]]): Map[Key, Commit]
Publishes the passed payloads using the given uploader.
Publishes the passed payloads using the given uploader. Only changed content will be uploaded.
payloads
A map with the data to be published.
returns
a map with the Commit objects.
Attributes
protected
Definition Classes
CommitProducer
final 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.
Definition Classes
CommitProducer → DriverTask
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
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException])
final def wait(arg0: Long): Unit
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException]) @native()
final def wait(): Unit
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException])

Deprecated Value Members

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

Packages

FingerprintsProducer

Companion object FingerprintsProducer

class FingerprintsProducer extends CommitProducer with ContextLogging

Instance Constructors

Value Members

Deprecated Value Members

Inherited from ContextLogging

Inherited from CommitProducer

Inherited from DriverTask

Inherited from AnyRef

Inherited from Any

Ungrouped

Packages

FingerprintsProducer

Companion object FingerprintsProducer

class FingerprintsProducer extends CommitProducer with ContextLogging

Instance Constructors

Value Members

Deprecated Value Members

Inherited from ContextLogging

Inherited from CommitProducer

Inherited from DriverTask

Inherited from AnyRef

Inherited from Any

Ungrouped

FingerprintsProducer