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https://issues.apache.org/jira/browse/AMBARI-20065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15872583#comment-15872583
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Hudson commented on AMBARI-20065:
---------------------------------
SUCCESS: Integrated in Jenkins build Ambari-branch-2.5 #1027 (See
[https://builds.apache.org/job/Ambari-branch-2.5/1027/])
AMBARI-20065 - Livy server start failed after downgrade with missing (jhurley:
[http://git-wip-us.apache.org/repos/asf?p=ambari.git&a=commit&h=5583edfb9822a7387664da0cf335099aed37fde0])
* (edit)
ambari-server/src/main/resources/stacks/HDP/2.5/upgrades/nonrolling-upgrade-2.6.xml
> Livy server start failed after downgrade with missing
> livy.server.kerberos.keytab error
> ---------------------------------------------------------------------------------------
>
> Key: AMBARI-20065
> URL: https://issues.apache.org/jira/browse/AMBARI-20065
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 2.5.0
> Reporter: Jonathan Hurley
> Assignee: Jonathan Hurley
> Priority: Critical
> Fix For: 2.5.0
>
> Attachments: AMBARI-20065.patch
>
>
> *STR*
> # Deployed cluster with Ambari 2.4.2.0-136 and HDP version: 2.5.3.0-37
> # Upgrade Ambari to 2.5.0.0-863
> # Perform EU to 2.6.0.0 and at finalize screen, start downgrade
> # Let downgrade complete
> # Observe the status of Livy Server after downgrade is successful
> *Result:*
> Livy server reports down and log says:
> {code}
> 17/02/10 15:10:44 INFO LivyServer: Using spark-submit version 1.6.2
> 17/02/10 15:10:46 INFO LivyServer: SPNEGO auth enabled (principal =
> HTTP/natd76-ypis-erm16tofndwngdsec-d7-6.openstacklo...@example.com)
> Exception in thread "main" java.lang.IllegalArgumentException: requirement
> failed: Kerberos requires livy.server.kerberos.keytab to be provided.
> at scala.Predef$.require(Predef.scala:233)
> at com.cloudera.livy.server.LivyServer.runKinit(LivyServer.scala:173)
> at com.cloudera.livy.server.LivyServer.start(LivyServer.scala:134)
> at com.cloudera.livy.server.LivyServer$.main(LivyServer.scala:277)
> at com.cloudera.livy.server.LivyServer.main(LivyServer.scala)
> {code}
> On Livy host, I see the following keytab:
> {code}
> root@natd76-ypis-erm16tofndwngdsec-d7-6:/var/log/livy# ls -lhrt
> /etc/security/keytabs/livy.service.keytab
> -r-------- 1 livy hadoop 543 Feb 10 00:09
> /etc/security/keytabs/livy.service.keytab
> {code}
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