JaeHwa Jung created TAJO-433:
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Summary: Improve integration with Hive
Key: TAJO-433
URL: https://issues.apache.org/jira/browse/TAJO-433
Project: Tajo
Issue Type: Sub-task
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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