select command, database from system.processes; show more result in cluster test, seem earlier query not release some resources

[youngsofun]

only in cluster mode

test_sqllogic_base_cluster_linux

ErrorType: statement query get result not equal to expected
Message: 
 Expected:
Query default                                                                   
 Actual:
Idle  default
Query  default                                        

Parsed Statement
    at_line: 1,
    s_type: Statement: query, type: TT, query_type: TT, retry: False,
    suite_name: base/03_dml/03_0011_select_from_system_processes,
    text:
        select command, database from system.processes;
    results: [(<re.Match object; span=(0, 4), match='----'>, 5, 'Query default')],
    runs_on: {'clickhouse', 'http', 'mysql'},
 Start Line: 5, Result Label: 
            

Originally posted by @youngsofun in #8778 (comment)

[youngsofun]

cc @zhang2014

[youngsofun]

not seen again