Github user ivakegg commented on the issue:
https://github.com/apache/accumulo/pull/253
I concur that failing if a configured class fails to load is better then
falling back to something else. If a user went through the trouble of
configuring something and they did it incorrectly, then the system should never
fall back to something else because that may have unexpected and perhaps bad
consequences. Instead the user should be forced to fix the configuration.
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