kafka修改分区、副本数、副本迁移

kafka修改分区和副本数

查看现在副本分配情况

1
2
3
4
5
6
../bin/kafka-topics.sh --zookeeper 127.0.0.1:2181 --describe  --topic test1

Topic:test1 PartitionCount:3 ReplicationFactor:2 Configs:
Topic: test1 Partition: 0 Leader: 2 Replicas: 2,4 Isr: 2,4
Topic: test1 Partition: 1 Leader: 3 Replicas: 3,5 Isr: 3,5
Topic: test1 Partition: 2 Leader: 4 Replicas: 4,1 Isr: 4,1

topic 分区扩容

1
./kafka-topics.sh --zookeeper 127.0.0.1:2181 -alter --partitions 4 --topic test1

修改副本数量、副本迁移

这个文件自己创建 格式按照下面的格式就可以了

根据topic的分区情况自行修改 partitions-topic.json 文件配置

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
{
"partitions":
[
{
"topic": "test1",
"partition": 0,
"replicas": [1,2]
},
{
"topic": "test1",
"partition": 1,
"replicas": [0,3]
},
{
"topic": "test1",
"partition": 2,
"replicas": [4,5]
}
],
"version":1
}

执行副本搬迁

1
../bin/kafka-reassign-partitions.sh --zookeeper 127.0.0.1:2181 --reassignment-json-file partitions-topic.json --execute

查看迁移情况:

1
2
3
4
5
6
../bin/kafka-reassign-partitions.sh --zookeeper 127.0.0.1:2181 --reassignment-json-file partitions-topic.json --verify

Status of partition reassignment:
Reassignment of partition [mx_prd_nginx_access,0] is still in progress
Reassignment of partition [mx_prd_nginx_access,1] completed successfully
Reassignment of partition [mx_prd_nginx_access,2] is still in progress

注释

kafka-reassign-partitions.sh工具来重新分布分区。该工具有三种使用模式:

  1. generate模式,给定需要重新分配的Topic,自动生成reassign plan(并不执行)
  2. execute模式,根据指定的reassign plan重新分配Partition
  3. verify模式,验证重新分配Partition是否成功

感觉文章还可以的话,帮忙点点下面的广告哦! 谢谢支持!

感谢您的支持!