Steve Loughran created YARN-4430:
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Summary: registry security validation can fail when downgrading to
insecure would work
Key: YARN-4430
URL: https://issues.apache.org/jira/browse/YARN-4430
Project: Hadoop YARN
Issue Type: Bug
Components: yarn
Affects Versions: 2.7.1
Environment: Kerberos, java 7 & 8
Reporter: Steve Loughran
The Registry ZK client code does a pre-emptive validation of registry security
settings, in the interest of being helpful when things fail.
But: sometimes it fails fast (see stack trace in SLIDER-993) when it could just
warn and continue -because if the registry is only being read, skipping SASL
auth works
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