[GitHub] spark issue #19802: [SPARK-22594][CORE] Handling spark-submit and master ver...

[Jiri-Kremser <gi...@git.apache.org>]

Github user Jiri-Kremser commented on the issue:

    https://github.com/apache/spark/pull/19802
  
    I've also added tests and removed "WIP" from the label? Do you guys want the change or would you like to have something more elaborated, like an initial handshake?
    
    One note about the "handshake approach". If there is new initial message that would be sent from client to server in which the client sends its version and server decides if it's backward compatible or not with this particular client version, this approach itself wouldn't solve the issue when old client (that doesn't know anything about it) tries to talk with new server. This PR solves this scenario.


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