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From Di Li <>
Subject Why RU doesn't run update Kerberos descriptors as the first step ?
Date Wed, 01 Mar 2017 22:10:16 GMT
Hello folks,

I am testing rolling ugprade in Ambari trunk code and I noticed that for
rolling upgrade, update kerberos descriptors step is after Zookeeper,
Ranger, Ranger KMS and Kafka.  For rolling downgrade, update Kerberos
descriptors step happens at the end of the entire downgrade just before the
finalize downgrade step.

I thought updating Kerberos descriptors should have happened before
starting components. For example, express upgrade/downgrade runs that step
before starting core and high level components.

Are there any particular reasons that RU runs Kerberos descriptor update
step the way it does ?



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