kafka partition

[root@xupan001 ~]# kafka-topics.sh -zookeeper xupan001:2181,xupan002:2181,xupan003:2181 --describe --topic test001
Topic: test001   PartitionCount:3        ReplicationFactor:3     Configs:
Topic: test001   Partition: 0    Leader: 2       Replicas: 2,0,1 Isr: 2,0,1     副本集合【Replicas: 2,0,1】【Isr: 2,0,1數據同步2》0》1】 
Topic: test001   Partition: 1    Leader: 0       Replicas: 0,1,2 Isr: 0,1,2
Topic: test001   Partition: 2    Leader: 1       Replicas: 1,2,0 Isr: 1,2,0進程


Kafka進程沒有主從,Partition是有主從的(leaderfener負責讀寫數據,follower負責同步數據)kafka

partiton: partion id,因爲此處只有3個partition,所以partition id 爲0,1,2
leader:當前負責讀寫的lead broker id
relicas:當前partition的全部replication broker list
isr:relicas的子集,只包含出於活動狀態的broker同步

分區以及同步過程以下:it

 

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