[GitHub] [incubator-kyuubi] yaooqinn commented on a diff in pull request #2345: [DOC] Hot Upgrade Kyuubi Server

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

yaooqinn commented on code in PR #2345:
URL: https://github.com/apache/incubator-kyuubi/pull/2345#discussion_r849055519


##########
docs/deployment/high_availability_guide.md:
##########
@@ -82,3 +82,13 @@ For example,
 ```shell
 bin/beeline -u 'jdbc:hive2://10.242.189.214:2181/;serviceDiscoveryMode=zooKeeper;zooKeeperNamespace=kyuubi' -n kentyao
 ```
+
+## How to Hot Upgrade Kyuubi Server
+
+Kyuubi supports hot upgrade one of server in a HA cluster which is transparent to users. For example, if you want to upgrade a Kyuubi server at host `kyuubi.host` with port `10009`, you can run the following cmd using `bin/kyuubi-ctl`:
+
+```shell
+./bin/kyuubi-ctl delete server --host "kyuubi.host" --port "10009"
+```
+
+Kyuubi server will stop until all session closed, and then you can start a new Kyuubi server.

Review Comment:
   not true, in read world we may want maintain a fixed num of servers. then we shall start whenever we want



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