GitHub user melin added a comment to the discussion: Support Internal Catalog

In China, data development personnel generally do not pay much attention to 
using data lakes. They are more focused on real-time data being written to data 
warehouses. Data lakes are needed to solve problems. There is no such high 
level of substitution as in the foreign market where iceberg is used to replace 
hive. Only some ODS tables use Paimon or iceberg. The main approach is to use 
the Parquet format table. There are also certain costs associated with using a 
data lake. It is difficult to implement all the tables using iceberg or paimon. 

Technically, an HMS is required. If the customer requests a cloud-native 
solution, they may question why an HMS is still needed (believing that only 
Hadoop would require an HMS). It is hoped to find an alternative solution to 
HMS. It is believed that more people have such demands.

GitHub link: 
https://github.com/apache/gravitino/discussions/7652#discussioncomment-13729823

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