Unable to read HiveServer2 configs from ZooKeeper

[merrily01]

1. Using the zookeeper mode, the server configuration is as follows:

kyuubi.ha.enabled                                        true
kyuubi.ha.zookeeper.quorum                      node1:2181,node2:2181,node3:2181
kyuubi.ha.zookeeper.client.port                 2181
kyuubi.ha.zookeeper.namespace               /zookeeper/kyuubi

2. Kyuubi server is started and successfully registered in zk :

4. The connection can be successful connected through beeline kyuubi server ip: port, but an error is reported through ./beeline -u "jdbc:hive2://node1:2181,node2:2181,node3:2181/default;serviceDiscoveryMode=zooKeeper;zooKeeperNamespace=/zookeeper/kyuubi" -n test, as follows:

Error: org.apache.kyuubi.jdbc.hive.ZooKeeperHiveClientException: Unable to read HiveServer2 configs from ZooKeeper (state=,code=0)

There are few logs and the prompts are vague. What may be the problem?

[pan3793]

Try change "zooKeeperNamespace=/zookeeper/kyuubi" to "zooKeeperNamespace=zookeeper/kyuubi", remove the leading slash

[pan3793]

And please provide the whole stacktrace, a one-line error message is not much help to finding the root cause sometimes.

[merrily01]

Thanks for the response, it is effective. @pan3793 Thanks♪(･ω･)ﾉ

[pan3793]

I think we can tolerate such a case, would you like to send a PR to fix it?

We can strip the leading and tailing slash of ZooKeeperHiveClientHelper#getZooKeeperNamespace's return value.

[merrily01]

Yeah, of course.
I will work on this later. Thx~