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Posted to commits@pinot.apache.org by GitBox <gi...@apache.org> on 2019/04/08 23:00:44 UTC

[GitHub] [incubator-pinot] Jackie-Jiang opened a new pull request #4089: In HelixBrokerStarter, allow custom cluster change handlers

Jackie-Jiang opened a new pull request #4089: In HelixBrokerStarter, allow custom cluster change handlers
URL: https://github.com/apache/incubator-pinot/pull/4089
 
 
   Motivation: all cluster change listeners should be added through the ClusterChangeMediater in order to perform dedup and proactive check
   
   Add ClusterChangeHandler interface
   Add methods in HelixBrokerStarter to allow custom cluster change handlers to be plugged in
   Split the responsibility of helix managers on broker side
   - Spectator: handles the custom change listeners, properties read/write
   - Participant: handles Helix functionality such as state transitions and messages

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