[jira] [Commented] (HIVE-21913) GenericUDTFGetSplits should handle usernames in the same way as LLAP

["Prasanth Jayachandran (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-21913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16869755#comment-16869755 ] 

Prasanth Jayachandran commented on HIVE-21913:
----------------------------------------------

[~jdere] can you please review this small patch?

> GenericUDTFGetSplits should handle usernames in the same way as LLAP
> --------------------------------------------------------------------
>
>                 Key: HIVE-21913
>                 URL: https://issues.apache.org/jira/browse/HIVE-21913
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 4.0.0, 3.2.0
>            Reporter: Prasanth Jayachandran
>            Assignee: Prasanth Jayachandran
>            Priority: Major
>         Attachments: HIVE-21913.1.patch
>
>
> LLAP ZK registry namespacing includes current user name which is typically hive. But in some deployments, usernames are created with '_' like hive_dev. RegistryUtils.currentUser() (that LLAP uses) replaces '_' with '-' for DNS reasons. But GenericUDTFSplits uses UGI login user which does not do the underscore replacement. As a result, LlapBaseInputFormat is finding any LLAP daemons even though they are running. 



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