[GitHub] [rocketmq] liuruiyiyang opened a new pull request #1458: Fix issue 1457

[GitBox <gi...@apache.org>]

liuruiyiyang opened a new pull request #1458: Fix issue 1457
URL: https://github.com/apache/rocketmq/pull/1458
 
 
   ## What is the purpose of the change
   Fix issue #1457
   
   ## Brief changelog
   
   1. Update all broker config when using -c param in ```mqadmin updateBrokerConfig``` subcommand
   2. Watch ```namesrvAddr``` param and make it effective dynamically for name server auto-scaling with a new switch config ```watchNamesrvAddr```.
   
   ## Verifying this change
   
   Use ```mqadmin updateBrokerConfig -c clusterName -n oldNameServerList -k namesrvAddr -v newNameServerList``` to see if all brokers in the cluster has log ```register broker[0]to name server newAddress:9876 OK```
   
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