Package io.camunda.zeebe.broker.partitioning.distribution

Class FixedPartitionDistributor

java.lang.Object

io.camunda.zeebe.broker.partitioning.distribution.FixedPartitionDistributor

All Implemented Interfaces:

PartitionDistributor

public final class FixedPartitionDistributor
extends Object
implements PartitionDistributor

A PartitionDistributor implementation which takes in a provided, fixed mapping which already describes which member maps to which partitions, and returns the appropriate set of distributed partitions on demand.

See FixedPartitionDistributorBuilder to build a new instance. The class is intentionally not publicly instantiable to reduce the risk of configuration errors.

Method Summary

Modifier and Type	Method	Description
Set<PartitionMetadata>	distributePartitions(Set<MemberId> clusterMembers, List<PartitionId> sortedPartitionIds, int replicationFactor)	Generates a partition distribution based on the initial configuration, using the input here mostly for validation.

Methods inherited from class java.lang.Object

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

Method Details

distributePartitions

public Set<PartitionMetadata> distributePartitions(Set<MemberId> clusterMembers,
 List<PartitionId> sortedPartitionIds,
 int replicationFactor)

Generates a partition distribution based on the initial configuration, using the input here mostly for validation.

Specified by:

distributePartitions in interface PartitionDistributor

Parameters:

clusterMembers - the set of members that can own partitions

sortedPartitionIds - a sorted list of partition IDs

replicationFactor - the replication factor for each partition

Returns:

a set of distributed partitions, containing the set of members to which they belong to

Throws:

IllegalStateException - if any of the configured members are not found in the set of clusterMembers; this implies that these members do not exist in the cluster

IllegalStateException - if at least one of the partitions in sortedPartitionIds is not distributed over any members

IllegalStateException - if at least one of the partitions in sortedPartitionIds does not have exactly replicationFactor members