Package io.camunda.zeebe.engine.processing.distribution

Class CommandRedistributor

java.lang.Object

io.camunda.zeebe.engine.processing.distribution.CommandRedistributor

All Implemented Interfaces:

StreamProcessorLifecycleAware

public final class CommandRedistributor
extends Object
implements StreamProcessorLifecycleAware

The Command Redistributor provides a mechanism to retry sending CommandDistributionRecords to other partitions. This is needed because the communication between partitions is unreliable.

A simple exponential backoff is used for retrying these pending distributions. This exponential backoff is statically configured to start of at 10 seconds COMMAND_REDISTRIBUTION_INTERVAL until it reaches a maximum of 5 minutes RETRY_MAX_BACKOFF_DURATION, doubling every time. This backoff is tracked for each pending distribution individually.

Field Summary

Fields

Modifier and Type	Field	Description
static final Duration	COMMAND_REDISTRIBUTION_INTERVAL	Specifies how often this redistributor runs, i.e.

Constructor Summary

Constructors

Constructor	Description
CommandRedistributor(DistributionState distributionState, InterPartitionCommandSender commandSender)

Method Summary

Modifier and Type	Method	Description
void	onRecovered(ReadonlyStreamProcessorContext context)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.camunda.zeebe.stream.api.StreamProcessorLifecycleAware

onClose, onFailed, onPaused, onResumed

Field Details

COMMAND_REDISTRIBUTION_INTERVAL

public static final Duration COMMAND_REDISTRIBUTION_INTERVAL

Specifies how often this redistributor runs, i.e. the fixed delay between runs. It is also used to specify the initial interval for retrying a specific pending distribution.

Constructor Details

CommandRedistributor

public CommandRedistributor(DistributionState distributionState,
 InterPartitionCommandSender commandSender)

Method Details

onRecovered

public void onRecovered(ReadonlyStreamProcessorContext context)

Specified by:

onRecovered in interface StreamProcessorLifecycleAware