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Posted to dev@rocketmq.apache.org by GitBox <gi...@apache.org> on 2021/08/24 04:54:14 UTC

[GitHub] [rocketmq-operator] caigy commented on issue #80: replica can not restart automatically

caigy commented on issue #80:
URL: https://github.com/apache/rocketmq-operator/issues/80#issuecomment-904321317


   The problem can be reproduced by following steps:
   1. Start a RocketMQ cluster with 2 brokers;
   2. When no subscription exists, that is, the file `/root/store/config/subscriptionGroup.json` in broker-0-master-0 does NOT exists, increase the size of cluster;
   3. The added brokers will failed to start because  `/root/store/config/subscriptionGroup.json` contains `<nil>`, which is an invalid JSON string.
   
   Cause：
   When the actual size of cluster is less than the specified number, the broker controller will create new brokers, and copy `subscriptionGroup.json` in broker-0-master-0 to the added brokers. However, if that file does not exists, `controller/broker.exec` just returns a string "<nil>", which is copied to the added brokers.


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