Github user arina-ielchiieva commented on the pull request: https://github.com/apache/drill/pull/474#issuecomment-208428822 Updated PR. New implementation approach: 1. we allow to register any drillbit (disregarding the version). 2. instead of getting available endpoints from coordinator, we'll be receiving compatible endpoints. Version compatibility will be defined using main application version (major.minor (+ 1). For example, drillbit with version 1.8 can work with 1.8 and 1.9. Drillbit with version 1.9 can work with 1.9 and 2.0 and so on. Even during rolling upgrades, compatible endpoints will be able to work together.
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