[jira] [Commented] (TAJO-433) Improve integration with Hive

["Hyunsik Choi (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TAJO-433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13852658#comment-13852658 ] 

Hyunsik Choi commented on TAJO-433:
-----------------------------------

+1 for this idea! That would be more useful in many cases.

> Improve integration with Hive
> -----------------------------
>
>                 Key: TAJO-433
>                 URL: https://issues.apache.org/jira/browse/TAJO-433
>             Project: Tajo
>          Issue Type: Improvement
>          Components: catalog
>    Affects Versions: 0.8-incubating
>            Reporter: JaeHwa Jung
>            Assignee: JaeHwa Jung
>             Fix For: 0.8-incubating
>
>
> Hi, guys~ 
> I wish to discuss about HCatalogStore. current Tajo uses HCatalog to integrate catalog with hive. So, users must run HiveMetaStoreServer because HCatalog connect HiveMetaStoreServer. 
> But at this point, it needs to make improvements.
> - First is HiveMetaStoreServer. if it can fall down or it performance bottlenecks, it will be a fatal problem for Tajo.
> - Second is HCatalog API. It doesn't provide API for DDL. So, Tajo use HCatalog API and HiveMetaStoreClient API. 
> So, I wish to remove HiveMetaStoreServer dependency and integrate catalog with Hive using HiveMetaStoreClient.  And I wish to use HiveMetaStoreClient API instead of HCatalog API.  I already checked HiveMetaStoreClient to connect HiveMetaStore without HiveMetaStoreServer.
> if HiveMetaStoreClient can't connect HiveMetaStore, Tajo try to connect HiveMetaStoreServer as backup policy.
> What do you think about this suggestion? :)



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