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https://issues.apache.org/jira/browse/TAJO-433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13853743#comment-13853743
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JaeHwa Jung edited comment on TAJO-433 at 12/20/13 7:04 AM:
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Thanks Jinho.
I'll update description about HiveMetaStore, and I think to discuss HCatalog
API at another JIRA issue.
was (Author: blrunner):
Thanks Jinho.
I'll update description about HiveMetaStore, and I think to discuss HCatalog
API at another JIRA.
> 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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