jihoonson commented on issue #9701: DruidLeaderClient always thinks the first 
node returned from DruidNodeDiscovery is the leader
URL: https://github.com/apache/druid/issues/9701#issuecomment-613776169
 
 
   When it tries to follow redirects, [it checks the current known 
leader](https://github.com/apache/druid/blob/cda9f41e69ebc0513782805fca9ead378c1910ab/server/src/main/java/org/apache/druid/discovery/DruidLeaderClient.java#L282-L294)
 which calls `pickOneHost()`. This function used to use 
`ServerDiscoverySelector` before #9481 which returns the known leader, but now 
it just returns the first node from `DruidNodeDiscovery`.
   
   
https://github.com/apache/druid/blob/cda9f41e69ebc0513782805fca9ead378c1910ab/server/src/main/java/org/apache/druid/discovery/DruidLeaderClient.java#L297-L307

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