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https://issues.apache.org/jira/browse/GRIFFIN-198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16640905#comment-16640905
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Nikolay Sokolov commented on GRIFFIN-198:
-----------------------------------------

[~Kevin Yao]

> hiveMetaStoreClient is null due to hive configuration

Should we support disabling hive integration (by providing empty hive url, for 
example)?

> cache is incomplete

Can you please clarify this part? Do you mean case of partial result, for 
example when looping through tables fails on one of those tables?

> Third, for evictHiveCache() method, we want to clear all caches. After that 
> we call getAllTable() or getAllDatabases() to cache all tables or databases

As far as I understand, evicting works as described, but population logic needs 
to be fixed. Is my understanding correct?

> HiveMetaStoreServiceImpl caches incorrect state of metastore
> ------------------------------------------------------------
>
>                 Key: GRIFFIN-198
>                 URL: https://issues.apache.org/jira/browse/GRIFFIN-198
>             Project: Griffin (Incubating)
>          Issue Type: Bug
>            Reporter: Nikolay Sokolov
>            Assignee: William Guo
>            Priority: Major
>
> Currently, HiveMetaStoreServiceImpl is caching:
> * nulls and empty lists in some methods, when metastore request failed for 
> some reason
> * empty list of tables as response to getAllTable(String) and getAllTable() 
> calls
> Both problems result in confusing output on large amount of tables.



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