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https://issues.apache.org/jira/browse/HIVE-10093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14385042#comment-14385042
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Aihua Xu commented on HIVE-10093:
---------------------------------

Thanks Szehon.

> Unnecessary HMSHandler initialization for default MemoryTokenStore on HS2
> -------------------------------------------------------------------------
>
>                 Key: HIVE-10093
>                 URL: https://issues.apache.org/jira/browse/HIVE-10093
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Szehon Ho
>            Assignee: Aihua Xu
>            Priority: Minor
>             Fix For: 1.2.0
>
>         Attachments: HIVE-10093.patch
>
>
> When the HiveAuthFactory is constructed in HS2, it initializes a HMSHandler 
> unnecessarily right before the call to: 
> HadoopThriftAuthBridge.startDelegationTokenSecretManager().  If the 
> DelegationTokenStore is configured to be a memoryTokenStore, this step is not 
> needed.
> Side effect is creation of useless derby database file on HiveServer2 in 
> secure clusters, causing confusion.  This could potentially be skipped if 
> MemoryTokenStore is used.



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