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https://issues.apache.org/jira/browse/AMBARI-17280?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alejandro Fernandez updated AMBARI-17280:
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Status: Patch Available (was: Open)
> RU to write out client configs that are dependencies of Hive, ATS, and Oozie
> during upgrades that change configs
> ----------------------------------------------------------------------------------------------------------------
>
> Key: AMBARI-17280
> URL: https://issues.apache.org/jira/browse/AMBARI-17280
> Project: Ambari
> Issue Type: Bug
> Components: stacks
> Affects Versions: 2.2.0
> Reporter: Ana Gillan
> Assignee: Alejandro Fernandez
> Priority: Critical
> Fix For: 2.4.0
>
> Attachments: AMBARI-17280.branch-2.4.patch, AMBARI-17280.trunk.patch
>
>
> During RU, HiveServer2 is restarted but the newer tez configs have not yet
> been saved, which is incorrect because Hive has a dependency on Tez.
> This is important when configs change during a major stack upgrade, e.g., HDP
> 2.4 -> 2.5. What happens today is,
> * Install packages generates /etc/tez/2.5.0.0-1/0 and copies the configs from
> /etc/tez/2.4.0.0-1/0/ to the new folder
> * If configs change during RU, then Hive is restarted and the classpath means
> that it will pick up the older tez configs from the new /etc/tez/2.5.0.0-1/0
> folder
> This problem exists for all of these components:
> HiveServer: depends on Tez and MapReduce clients
> ATS: depends on Tez and Spark clients
> Oozie: depends on Tez, Spark, and MapReduce clients
> This problem only exists when configs change (so crossing major stack
> version) and during RU (because it is allowed to change configs during the
> middle of restarting services).
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