首先，看一下遇到的问题：

Partitions reassignment failed due to Partition reassignment data file imp-imps-app-web.json is empty

kafka.common.AdminCommandFailedException: Partition reassignment data file imp-imps-app-web.json is empty

at kafka.admin.ReassignPartitionsCommand$.executeAssignment(ReassignPartitionsCommand.scala:114)

at kafka.admin.ReassignPartitionsCommand$.main(ReassignPartitionsCommand.scala:47)

at kafka.admin.ReassignPartitionsCommand.main(ReassignPartitionsCommand.scal

·············································

这个问题在网上查了好久，没有精准的回答，特此记录一下！

原因是json文件的最后一个pertion结束之后多了一个逗号！

去掉逗号即OK了！

具体如下：

本文出自 “十年一剑--劲风” 博客，请务必保留此出处http://jingfeng.blog.51cto.com/9152964/1876505

Kafka集群扩容遇到的问题