Apache Kafka系列(七)Kafka Repartition操作

Kafka提供了重新分区的命令，但是只能增加，不能减少

我的kafka安装在/usr/local/kafka_2.12-1.0.2目录下面，

[root@i-zk1 kafka_2.-]# bin/kafka-topics. --topic test
Topic:test      PartitionCount:        ReplicationFactor:     Configs:
        Topic: test     Partition:     Leader:        Replicas:  Isr: 

查看当前topic test为一个分区，一个Repli

执行如下

bin/kafka-reassign-partitions. --reassignment-json-file repartion_config/test.json --execute
test.json

其中test.json内容如下

[root@i-zk1 kafka_2.-]# cat repartion_config/test.json
{,,,,]},{,,,]},{,,,]}]}

再次查看test topic如下

[root@i-zk1 kafka_2.-]# bin/kafka-topics. --topic test
Topic:test      PartitionCount:        ReplicationFactor:     Configs:
        Topic: test     Partition:     Leader:        Replicas: ,, Isr: ,,
        Topic: test     Partition:     Leader:        Replicas: ,, Isr: ,,
        Topic: test     Partition:     Leader:        Replicas: ,, Isr: ,,