【kafka系列教程37】kafka增加副本

增加副本

 

Increasing the replication factor of an existing partition is easy. Just specify the extra replicas in the custom reassignment json file and use it with the --execute option to increase the replication factor of the specified partitions.

在现有分区增加副本是很容易的，只要指定自定义的重新分配的json文件脚本，并用 --execute 选项去执行这个脚本。

 

For instance, the following example increases the replication factor of partition 0 of topic foo from 1 to 3. Before increasing the replication factor, the partition's only replica existed on broker 5. As part of increasing the replication factor, we will add more replicas on brokers 6 and 7.

增加副本之前，分区已存在的副本在broker5上，它也作为增加副本的一部分，我们将副本添加到broker6和7上。

 

The first step is to hand craft the custom reassignment plan in a json file-

第一步手工写一个自定义的分配的json脚本 -

> cat increase-replication-factor.json
{"version":1,
 "partitions":[{"topic":"foo","partition":0,"r