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https://issues.apache.org/jira/browse/HIVE-28658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17905120#comment-17905120
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Denys Kuzmenko commented on HIVE-28658:
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1. Therefore, i think this ticket does't have any conflict with PR-5145. Am i
right?
I think there might be some conflicts since `HiveCatalog` was refactored.
No idea why there is a coupling on hive-iceberg-handler in
`hive-metastore-icecat` instead of iceberg-hive-metastore. HMS is supposed to
be a standalone project and shouldn't depend on query-engine modules, instead
could import native iceberg libs directly;
2. We need this ticket to make Hive as a query engine more catalog-neutral.
Exactly. Would be nice if we could configure catalogs on db/table level, but
that would require transforming HMS into a multi-catalog (registry of
catalogs).
Maybe at this moment, we could limit catalog definition to a table type,
similar to Trino
iceberg.catalog.type=rest
iceberg.rest-catalog.uri=https://iceberg-with-rest:8181/
`class HiveCatalog extends BaseMetastoreCatalog` is a client abstraction used
by query-engine (HS2). Under the hood, it uses a client pool
`ClientPool<IMetaStoreClient, TException>` to communicate with the actual
catalog (currently just HMS)
We need to make an Iface pluggable. I am leaning towards option 2 in the above
doc as well.
> Iceberg REST Catalog Support
> -----------------------------
>
> Key: HIVE-28658
> URL: https://issues.apache.org/jira/browse/HIVE-28658
> Project: Hive
> Issue Type: Improvement
> Security Level: Public(Viewable by anyone)
> Components: Iceberg integration
> Reporter: Denys Kuzmenko
> Assignee: Zoltán Rátkai
> Priority: Major
>
> Allow Hive to communicate directly with an Iceberg catalog service using the
> Iceberg REST Catalog protocol. This protocol is the standard and recommended
> way to interact with Iceberg metadata and tables.
> interface MetadataProvider
> * HiveCatalog
> * RestCatalog
> Ref:
> https://www.tabular.io/apache-iceberg-cookbook/getting-started-trino-configuration/
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