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subscriber can be notified of the assignment change when topic is just configured

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Next: Subscriber needs to read by the timestamp offset.
This commit is contained in:
chrislu
2024-01-03 13:30:30 -08:00
parent efb695fd93
commit 35869b5c80
8 changed files with 55 additions and 25 deletions
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6
weed/mq/pub_balancer/lookup.go
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@@ -33,7 +33,7 @@ func (balancer *Balancer) LookupOrAllocateTopicPartitions(topic *mq_pb.Topic, pu
}
}
}
if len(assignments) > 0 || !publish {
if len(assignments) > 0 || !(publish && len(assignments) !=int(partitionCount) && partitionCount > 0) {
// glog.V(0).Infof("existing topic partitions %d: %v", len(assignments), assignments)
return assignments, nil
}
@@ -48,5 +48,7 @@ func (balancer *Balancer) LookupOrAllocateTopicPartitions(topic *mq_pb.Topic, pu
if balancer.Brokers.IsEmpty() {
return nil, ErrNoBroker
}
return allocateTopicPartitions(balancer.Brokers, partitionCount), nil
assignments = allocateTopicPartitions(balancer.Brokers, partitionCount)
balancer.OnPartitionChange(topic, assignments)
return
}