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https://issues.apache.org/jira/browse/HIVE-15828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15854970#comment-15854970
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Sergey Shelukhin commented on HIVE-15828:
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Hmm.. that can only be done if you know what ACL it should have, which may not
be known in a general case in an R/O registry (since the standard acl is write
hive only, read world, so status could be running under any user not related to
LLAP user)
> LLAP: Create root path of znode in init/start of registry service
> -----------------------------------------------------------------
>
> Key: HIVE-15828
> URL: https://issues.apache.org/jira/browse/HIVE-15828
> Project: Hive
> Issue Type: Bug
> Components: llap
> Affects Versions: 2.2.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
>
> When there are no llap daemons running, if getInstances() in registry service
> is invoked this can result in InvalidACLException since no daemons created
> zpath yet. The root path will not exist when instance cache populates entries
> under root path. If the root path creation is moved to init/start then
> getInstances() can return empty instead of failing with exception.
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