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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.
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

IncrementalStatefulMode

class IncrementalStatefulMode extends IncrementalBaseMode

Actual implementation of IncrementalBaseMode delegating to a com.here.platform.data.processing.driver.StatefulCompilerExecutor.

This queries the data available, the changes, the state from the previous run and what is already published. It then runs the executor and publish the result of compilation to the output catalog. The new state is updated and persisted as well in the output catalog, for the next run.

See also: IncrementalBaseMode for details on when this mode is applicable.

Linear Supertypes

IncrementalBaseMode, ContextLogging, ContextAwareMode, TaskMode, AnyRef, Any

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Inherited

IncrementalStatefulMode
IncrementalBaseMode
ContextLogging
ContextAwareMode
TaskMode
AnyRef
Any

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Visibility

Public
All

Instance Constructors

new IncrementalStatefulMode(context: DriverContext, id: String, executor: StatefulCompilerExecutor)
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
executor
the executor that should eventually run

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

Attributes
protected
Definition Classes
IncrementalStatefulMode → IncrementalBaseMode
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 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
Definition Classes
IncrementalBaseMode
def isApplicable: Boolean
This mode is only applicable if the following conditions are met: - disableIncremental config parameter is false - what's changed is available for every input catalog - output catalog is not empty
This mode is only applicable if the following conditions are met: - disableIncremental config parameter is false - what's changed is available for every input catalog - output catalog is not empty
returns
if the mode is applicable, so if the mode should run and its result evaluated

Definition Classes
IncrementalBaseMode → TaskMode
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
@native()
final def notifyAll(): Unit

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

Attributes
protected
Definition Classes
IncrementalBaseMode
val parallelism: Int

Attributes
protected
Definition Classes
ContextAwareMode
def run(): TaskResult
Runs the compiler only providing the changes since the last run for every input catalog.
Runs the compiler only providing the changes since the last run for every input catalog.
returns
the result of the compilation if applicable, otherwise None

Definition Classes
IncrementalBaseMode → 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

IncrementalStatefulMode

class IncrementalStatefulMode extends IncrementalBaseMode

Instance Constructors

Value Members

Inherited from IncrementalBaseMode

Inherited from ContextLogging

Inherited from ContextAwareMode

Inherited from TaskMode

Inherited from AnyRef

Inherited from Any

Ungrouped

Packages

IncrementalStatefulMode 

class IncrementalStatefulMode extends IncrementalBaseMode

Instance Constructors

Value Members

Inherited from IncrementalBaseMode

Inherited from ContextLogging

Inherited from ContextAwareMode

Inherited from TaskMode

Inherited from AnyRef

Inherited from Any

Ungrouped

IncrementalStatefulMode