Maybe a bug about the system.parts_column about clickhouse HOT 2 OPEN

SELECT
    name,
    data_uncompressed_bytes
FROM system.columns
WHERE `table` = 'zookeeper_log'
ORDER BY name ASC

Query id: 11e7eb58-9cfb-4f2f-ab02-54038205b603

    ┌─name──────────────────┬─data_uncompressed_bytes─┐
 1. │ address               │                       0 │
 2. │ children              │                       0 │
 3. │ data                  │                       0 │
 4. │ duration_microseconds │                       0 │
 5. │ error                 │                       0 │
 6. │ event_date            │                       0 │
 7. │ event_time            │                       0 │
 8. │ has_watch             │                       0 │
 9. │ hostname              │                       0 │
10. │ is_ephemeral          │                       0 │
11. │ is_sequential         │                       0 │
12. │ op_num                │                       0 │
13. │ path                  │                       0 │
14. │ path_created          │                       0 │
15. │ port                  │                       0 │
16. │ query_id              │                       0 │
17. │ request_idx           │                       0 │
18. │ requests_size         │                       0 │
19. │ session_id            │                       0 │
20. │ stat_cversion         │                       0 │
21. │ stat_czxid            │                       0 │
22. │ stat_dataLength       │                       0 │
23. │ stat_mzxid            │                       0 │
24. │ stat_numChildren      │                       0 │
25. │ stat_pzxid            │                       0 │
26. │ stat_version          │                       0 │
27. │ thread_id             │                       0 │
28. │ type                  │                       0 │
29. │ version               │                       0 │
30. │ watch_state           │                       0 │
31. │ watch_type            │                       0 │
32. │ xid                   │                       0 │
33. │ zxid                  │                       0 │
    └───────────────────────┴─────────────────────────┘

33 rows in set. Elapsed: 0.005 sec. 

production-01 :) Select column, sum(data_uncompressed_bytes) from system.parts_columns where table = 'zookeeper_log' and active group by column order by column

SELECT
    column,
    sum(data_uncompressed_bytes)
FROM system.parts_columns
WHERE (`table` = 'zookeeper_log') AND active
GROUP BY column
ORDER BY column ASC

Query id: b1faef1b-1dcb-49df-a330-3ad2f226600a

    ┌─column────────────────┬─sum(data_uncompressed_bytes)─┐
 1. │ address               │                      2399315 │
 2. │ children              │                      2399315 │
 3. │ data                  │                      2399315 │
 4. │ duration_microseconds │                      2399315 │
 5. │ error                 │                      2399315 │
 6. │ event_date            │                      2399315 │
 7. │ event_time            │                      2399315 │
 8. │ has_watch             │                      2399315 │
 9. │ hostname              │                      2399315 │
10. │ is_ephemeral          │                      2399315 │
11. │ is_sequential         │                      2399315 │
12. │ op_num                │                      2399315 │
13. │ path                  │                      2399315 │
14. │ path_created          │                      2399315 │
15. │ port                  │                      2399315 │
16. │ query_id              │                      2399315 │
17. │ request_idx           │                      2399315 │
18. │ requests_size         │                      2399315 │
19. │ session_id            │                      2399315 │
20. │ stat_cversion         │                      2399315 │
21. │ stat_czxid            │                      2399315 │
22. │ stat_dataLength       │                      2399315 │
23. │ stat_mzxid            │                      2399315 │
24. │ stat_numChildren      │                      2399315 │
25. │ stat_pzxid            │                      2399315 │
26. │ stat_version          │                      2399315 │
27. │ thread_id             │                      2399315 │
28. │ type                  │                      2399315 │
29. │ version               │                      2399315 │
30. │ watch_state           │                      2399315 │
31. │ watch_type            │                      2399315 │
32. │ xid                   │                      2399315 │
33. │ zxid                  │                      2399315 │
    └───────────────────────┴──────────────────────────────┘

33 rows in set. Elapsed: 0.008 sec. 

36. │ column_bytes_on_disk                  │ UInt64             │              │                    │ Total size of the column in bytes.
                                                                 │                  │                │
37. │ column_data_compressed_bytes          │ UInt64             │              │                    │ Total size of the compressed data in the column, in bytes.
                                                                 │                  │                │
38. │ column_data_uncompressed_bytes        │ UInt64             │              │                    │ Total size of the decompressed data in the column, in bytes.
                                                                 │                  │                │