public class RangeAssignor
extends org.apache.kafka.clients.consumer.internals.AbstractPartitionAssignor
The range assignor works on a per-topic basis. For each topic, we lay out the available partitions in numeric order and the consumers in lexicographic order. We then divide the number of partitions by the total number of consumers to determine the number of partitions to assign to each consumer. If it does not evenly divide, then the first few consumers will have one extra partition.
For example, suppose there are two consumers C0 and C1, two topics t0 and
t1, and each topic has 3 partitions, resulting in partitions t0p0, t0p1,
t0p2, t1p0, t1p1, and t1p2.
The assignment will be:
C0: [t0p0, t0p1, t1p0, t1p1]C1: [t0p2, t1p2]| Constructor and Description |
|---|
RangeAssignor() |
| Modifier and Type | Method and Description |
|---|---|
Map<String,List<TopicPartition>> |
assign(Map<String,Integer> partitionsPerTopic,
Map<String,org.apache.kafka.clients.consumer.internals.PartitionAssignor.Subscription> subscriptions) |
String |
name() |
assign, onAssignment, partitions, put, subscriptionpublic String name()