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@ilejn ilejn commented Dec 18, 2025

Changelog category (leave one):

  • Bug Fix (user-visible misbehavior in an official stable release)

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

Now datalakes catalogs will be shown in system introspection tables only if show_data_lake_catalogs_in_system_tables explicitly enabled (ClickHouse#88341 by @alesapin)

Besides this, error hints don't use catalogs.

Note, that in Antalya show_data_lake_catalogs_in_system_tables is true by default

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github-actions bot commented Dec 18, 2025

Workflow [PR], commit [81bf874]

@zvonand zvonand merged commit 02ac2fb into antalya-25.8 Dec 19, 2025
414 of 436 checks passed
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QA verified by manual check:

clickhouse1 :) set show_data_lake_catalogs_in_system_tables=0

SET show_data_lake_catalogs_in_system_tables = 0

Query id: 1864bce8-7f2d-41a3-adaf-ea7c5fa2fff5

Ok.

0 rows in set. Elapsed: 0.001 sec. 

clickhouse1 :) show databases

SHOW DATABASES

Query id: 6d05f1b7-8f7d-4de3-876c-9c4b9d967f6c

   ┌─name───────────────┐
1. │ INFORMATION_SCHEMA │
2. │ default            │
3. │ information_schema │
4. │ system             │
   └────────────────────┘

4 rows in set. Elapsed: 0.002 sec. 

clickhouse1 :) select * from system.tables where name = 'iceberg_985b8283_df91_11f0_b726_e0c26496f172.name_985b82f3_df91_11f0_9725_e0c26496f172'

SELECT *
FROM system.tables
WHERE name = 'iceberg_985b8283_df91_11f0_b726_e0c26496f172.name_985b82f3_df91_11f0_9725_e0c26496f172'

Query id: c582a7f3-c8bc-4d08-a471-86a302ca8aa2

Ok.

0 rows in set. Elapsed: 0.003 sec. 

clickhouse1 :) set show_data_lake_catalogs_in_system_tables=1

SET show_data_lake_catalogs_in_system_tables = 1

Query id: 5c3a4c58-9bb7-4336-9f47-c8a6dace65a1

Ok.

0 rows in set. Elapsed: 0.001 sec. 

clickhouse1 :) show databases

SHOW DATABASES

Query id: ac6529e7-0513-445d-84d8-85bf151aa6c7

   ┌─name──────────────────────────────────────────┐
1. │ INFORMATION_SCHEMA                            │
2. │ datalake_985b833f_df91_11f0_a4f3_e0c26496f172 │
3. │ default                                       │
4. │ information_schema                            │
5. │ system                                        │
   └───────────────────────────────────────────────┘

5 rows in set. Elapsed: 0.001 sec. 

clickhouse1 :) select * from system.tables where name = 'iceberg_985b8283_df91_11f0_b726_e0c26496f172.name_985b82f3_df91_11f0_9725_e0c26496f172'

SELECT *
FROM system.tables
WHERE name = 'iceberg_985b8283_df91_11f0_b726_e0c26496f172.name_985b82f3_df91_11f0_9725_e0c26496f172'

Query id: 72b99c1e-ad77-4846-b4f2-db9a9cbe37b6

Row 1:
──────
database:                         datalake_985b833f_df91_11f0_a4f3_e0c26496f172
name:                             iceberg_985b8283_df91_11f0_b726_e0c26496f172.name_985b82f3_df91_11f0_9725_e0c26496f172
uuid:                             00000000-0000-0000-0000-000000000000
engine:                           IcebergS3
is_temporary:                     0
data_paths:                       []
metadata_path:                    
metadata_modification_time:       1970-01-01 01:00:00
metadata_version:                 0
dependencies_database:            []
dependencies_table:               []
create_table_query:               CREATE TABLE datalake_985b833f_df91_11f0_a4f3_e0c26496f172.`iceberg_985b8283_df91_11f0_b726_e0c26496f172.name_985b82f3_df91_11f0_9725_e0c26496f172` (`string` Nullable(String), `double` Nullable(Float64), `integer` Nullable(Int64), `boolean` Nullable(Bool), `struct` Tuple(created_by Nullable(String)), `decimal` Nullable(Decimal(9, 2))) ENGINE = Iceberg('http://minio:9000/warehouse/data/', 'admin', '[HIDDEN]')
engine_full:                      Iceberg('http://minio:9000/warehouse/data/', 'admin', '[HIDDEN]')
as_select:                        
parameterized_view_parameters:    []
partition_key:                    
sorting_key:                      string ASC
primary_key:                      
sampling_key:                     
storage_policy:                   
total_rows:                       100
total_bytes:                      4454
total_bytes_uncompressed:         ᴺᵁᴸᴸ
parts:                            ᴺᵁᴸᴸ
active_parts:                     ᴺᵁᴸᴸ
total_marks:                      ᴺᵁᴸᴸ
active_on_fly_data_mutations:     0
active_on_fly_alter_mutations:    0
active_on_fly_metadata_mutations: 0
lifetime_rows:                    ᴺᵁᴸᴸ
lifetime_bytes:                   ᴺᵁᴸᴸ
comment:                          
has_own_data:                     0
loading_dependencies_database:    []
loading_dependencies_table:       []
loading_dependent_database:       []
loading_dependent_table:          []
definer:                          

1 row in set. Elapsed: 0.040 sec. 

clickhouse1 :) 

@alsugiliazova alsugiliazova added the verified Verified by QA label Dec 23, 2025
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5 participants