Package com.hazelcast.jet.core

Interface Processor.Context

All Superinterfaces:

ProcessorMetaSupplier.Context, ProcessorSupplier.Context

All Known Implementing Classes:

TestProcessorContext

Enclosing interface:

Processor

public static interface Processor.Context
extends ProcessorSupplier.Context

Context passed to the processor in the init() call.

Since:

Jet 3.0

Method Summary

Modifier and Type	Method	Description
int	globalProcessorIndex()	Returns the index of the processor among all the processors created for this vertex on all nodes: it's a unique cluster-wide index.
int	localProcessorIndex()	Returns the index of the processor among all the processors created for this vertex on a single node: it's a unique node-wide index.
ILogger	logger()	Return a logger for the processor
default int[]	processorPartitions()	Returns the slice of partitions for this processor.

Methods inherited from interface com.hazelcast.jet.core.ProcessorMetaSupplier.Context

checkPermission, classLoader, dataConnectionService, executionId, hazelcastInstance, isLightJob, jetInstance, jobConfig, jobId, localParallelism, maxProcessorAccumulatedRecords, memberCount, partitionAssignment, processingGuarantee, snapshottingEnabled, totalParallelism, vertexName

Methods inherited from interface com.hazelcast.jet.core.ProcessorSupplier.Context

attachedDirectory, attachedFile, managedContext, memberIndex, memberPartitions, recreateAttachedDirectory, recreateAttachedFile

Method Details

logger

@Nonnull
ILogger logger()

Return a logger for the processor

Specified by:

logger in interface ProcessorMetaSupplier.Context

Specified by:

logger in interface ProcessorSupplier.Context

localProcessorIndex

int localProcessorIndex()

Returns the index of the processor among all the processors created for this vertex on a single node: it's a unique node-wide index.

The value is in the range [0...localParallelism-1].

globalProcessorIndex

int globalProcessorIndex()

Returns the index of the processor among all the processors created for this vertex on all nodes: it's a unique cluster-wide index.

The value is in the range [0...totalParallelism-1]. For example if there are 2 members in the cluster and local parallelism is 4, the processors on the 1st cluster member will have indexes 0..3 and on the second member they will have indexes 4..7.

processorPartitions

default int[] processorPartitions()

Returns the slice of partitions for this processor. It distributes ProcessorSupplier.Context.memberPartitions() according to the ProcessorMetaSupplier.Context.localParallelism() and localProcessorIndex().