Github user zjffdu commented on the issue:
https://github.com/apache/zeppelin/pull/1163
agree with @felixcheung, use the zeppelin service keytab/principal might
bring some other potential security problems. I think user A would expect to
run shell script as himself, but actually it run as user zeppelin. And seems
all the users are sharing the same principal if I understand correctly.
Besides that I have one question about shiro of zeppelin, does shiro will
map the username to hadoop side ? Say I login zeppelin as user A, would that
guaranteed there should also be a user A in the hadoop ecosystem?
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