Hi,

I have a cluster with 3 brokers (0.11)
when I create a topic with min.insync.replicas=2 and replication-factor 2
I see number of  insync replicats in the created topic is less than
min.insync.replicas.
Why some partitions have less than 2 in sync repicas? How to prevent it?

Here is the commands I used and the output.
kafka-topics.sh --create --topic test --replication-factor 2 --config
min.insync.replicas=2  --partitions 30 --zookeeper 127.0.0.1
kafka-topics.sh --describe --topic test  --zookeeper 127.0.0.1

Topic:test    PartitionCount:30    ReplicationFactor:2
Configs:min.insync.replicas=2
    Topic: highload    Partition: 0    Leader: 2    Replicas: 2,3    Isr: 2,3
    Topic: highload    Partition: 1    Leader: 3    Replicas: 3,1    Isr: 3,1
    Topic: highload    Partition: 2    Leader: 1    Replicas: 1,2    Isr: 1,2
    Topic: highload    Partition: 3    Leader: 2    Replicas: 2,1    Isr: 2,1
    Topic: highload    Partition: 4    Leader: 3    Replicas: 3,2    Isr: 3,2
    Topic: highload    Partition: 5    Leader: 1    Replicas: 1,3    Isr: 1
    Topic: highload    Partition: 6    Leader: 2    Replicas: 2,3    Isr: 2,3
    Topic: highload    Partition: 7    Leader: 3    Replicas: 3,1    Isr: 3,1
    Topic: highload    Partition: 8    Leader: 1    Replicas: 1,2    Isr: 1,2
    Topic: highload    Partition: 9    Leader: 2    Replicas: 2,1    Isr: 2,1
    Topic: highload    Partition: 10    Leader: 3    Replicas: 3,2    Isr: 3,2
    Topic: highload    Partition: 11    Leader: 1    Replicas: 1,3    Isr: 1
    Topic: highload    Partition: 12    Leader: 2    Replicas: 2,3    Isr: 2,3
    Topic: highload    Partition: 13    Leader: 3    Replicas: 3,1    Isr: 3,1
    Topic: highload    Partition: 14    Leader: 1    Replicas: 1,2    Isr: 1,2
    Topic: highload    Partition: 15    Leader: 2    Replicas: 2,1    Isr: 2,1
    Topic: highload    Partition: 16    Leader: 3    Replicas: 3,2    Isr: 3,2
    Topic: highload    Partition: 17    Leader: 1    Replicas: 1,3    Isr: 1
    Topic: highload    Partition: 18    Leader: 2    Replicas: 2,3    Isr: 2,3
    Topic: highload    Partition: 19    Leader: 3    Replicas: 3,1    Isr: 3,1
    Topic: highload    Partition: 20    Leader: 1    Replicas: 1,2    Isr: 1,2
    Topic: highload    Partition: 21    Leader: 2    Replicas: 2,1    Isr: 2,1
    Topic: highload    Partition: 22    Leader: 3    Replicas: 3,2    Isr: 3,2
    Topic: highload    Partition: 23    Leader: 1    Replicas: 1,3    Isr: 1
    Topic: highload    Partition: 24    Leader: 2    Replicas: 2,3    Isr: 2,3
    Topic: highload    Partition: 25    Leader: 3    Replicas: 3,1    Isr: 3,1
    Topic: highload    Partition: 26    Leader: 1    Replicas: 1,2    Isr: 1,2
    Topic: highload    Partition: 27    Leader: 2    Replicas: 2,1    Isr: 2,1
    Topic: highload    Partition: 28    Leader: 3    Replicas: 3,2    Isr: 3,2
    Topic: highload    Partition: 29    Leader: 1    Replicas: 1,3    Isr: 1

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