Error on catalog Iceberg REST : system namespace does not exist

[baptistegh]

I have a strange behavior with my JDBC/ODBC clients on Trino 475.

I use a Iceberg REST Catalog (lakekeeper).

Some of my Trino clients uses some SQL to show existing tables and views.

But I found that when a request on <catalog>.information_schema.tables is filtered, a request is executed on the Iceberg catalog but it does not know the system namespace.

Exemple:

This is working fine:

select * from <iceberg_catalog>.information_schema.tables;

This does not work:

select * from <iceberg_catalog>.information_schema.tables where table_catalog LIKE '<iceberg_catalog>'

I don't understand why trino is requesting the catalog to list tables/views under the system namespace.

Logs from Lakekeeper (iceberg rest)

GET /catalog/v1/<uid_warehouse>/namespaces/system/tables
GET /catalog/v1/<uid_warehouse>/namespaces/system/views

If I don't filter the request, I don't see those 2 requests in Lakekeeper logs.

[baptistegh]

Even a limit does not work

Exemple:

select * from <iceberg_catalog>.information_schema.tables limit 200;