danhuawang commented on issue #11709:
URL: https://github.com/apache/gravitino/issues/11709#issuecomment-4727509190
### Steps to reproduce
This can be reproduced with the following sequence (extracted from
`FlinkConnectorViewIcebergRestOAuth2IT`):
1. **Create a metalake and an Iceberg catalog with `catalog-backend=rest`:**
```java
metalake = adminClient.createMetalake(metalakeName, "test",
Collections.emptyMap());
Map<String, String> icebergProps = Maps.newHashMap();
icebergProps.put("catalog-backend", "rest");
icebergProps.put("uri", "<IRC endpoint>");
icebergProps.put("s3-access-key-id", "...");
icebergProps.put("s3-secret-access-key", "...");
icebergProps.put("credential-providers", "s3-secret-key");
icebergProps.put("data-access", "vended-credentials");
Catalog catalog = metalake.createCatalog(
"iceberg_rest_catalog", Catalog.Type.RELATIONAL,
"lakehouse-iceberg", "test", icebergProps);
```
2. **Create a schema and a table through the catalog (operations are proxied
to the remote Iceberg REST service):**
```java
catalog.asSchemas().createSchema("test_db", "comment",
Collections.emptyMap());
// Then via Flink SQL or the Gravitino API:
// CREATE TABLE test_db.my_table (id INT)
```
3. **Attempt to list tags (or policies) on the table:**
```java
MetadataObject tableObj = MetadataObjects.of(
Arrays.asList("iceberg_rest_catalog", "test_db", "my_table"),
MetadataObject.Type.TABLE);
metalake.listTags(tableObj); // → throws NoSuchMetadataObjectException
```
4. **Observe the error:**
```
NoSuchMetadataObjectException: Failed to list tags for metadata object
MetadataObject: [fullName=iceberg_rest_catalog.test_db.my_table],
[type=TABLE] due to not found
Caused by: NoSuchEntityException: No such schema entity: test_db
at SchemaMetaService.getSchemaIdByMetalakeNameAndCatalogNameAndSchemaName
```
The same sequence works fine if `catalog-backend=jdbc` is used instead,
because in that case Gravitino directly manages the metadata and persists
schema/table entity records in its own store.
### Environment
- Gravitino: main branch (post PR #11636)
- Iceberg REST backend with OAuth2 authentication
- Reproducible via: `FlinkConnectorViewIcebergRestOAuth2IT` in
`qa/gravitino-service-e2e-test`
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