Github user sohami commented on the issue:
https://github.com/apache/drill/pull/870
@ppadma -
1) For the ease of use. Once the security is being configured for Drill
then it's better if all the config changes are done in single place (which is
drill-override.conf) and then make sure that all communications are secure.
With this option user doesn't have to explicitly go and edit the Storage Plugin
configuration to enable security.
2) It will take care of enabling/disabling security both for active and
inactive plugins.
3) This can be extended for handling security of all the storage plugin.
Hence this config can be a single place to enable/disable security for all the
plugins in one go rather than doing it manually for each and every plugin one
by one.
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