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Re: logging of Logical Decoding

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On 12/24/2014 02:29 AM, Andrey Lizenko wrote:
Hello,
every execute of 'pg_logical_slot_get_changes'  is logged by

    2014-12-23 11:41:53 EST STATEMENT:  SELECT * FROM
    pg_logical_slot_get_changes('regression_slot', NULL, NULL);
    2014-12-23 11:42:21 EST LOG:  starting logical decoding for slot
    "regression_slot"
    2014-12-23 11:42:21 EST DETAIL:  streaming transactions committing
    after A/4E026FD8, reading WAL from A/4E026ED0



logs settings are almost default:

    postgres=# select name, setting from pg_settings where name like
    ('log%');
                 name             |            setting
    -----------------------------+--------------------------------
      log_autovacuum_min_duration | -1
      log_checkpoints             | off
      log_connections             | off
      log_destination             | stderr
      log_directory               | pg_log
      log_disconnections          | off
      log_duration                | off
      log_error_verbosity         | default
      log_executor_stats          | off
      log_file_mode               | 0600
      log_filename                | postgresql-%Y-%m-%d_%H%M%S.log
      log_hostname                | off
      log_line_prefix             |  %t
      log_lock_waits              | off
      log_min_duration_statement  | -1
      log_min_error_statement     | error
      log_min_messages            | warning
      log_parser_stats            | off
      log_planner_stats           | off
      log_rotation_age            | 1440
      log_rotation_size           | 10240
      log_statement               | none
      log_statement_stats         | off
      log_temp_files              | -1
      log_timezone                | US/Eastern
      log_truncate_on_rotation    | off
      logging_collector           | off
    (27 rows)


Is it possible to reduce verbose level for this?

Set log_error_verbosity to terse:

http://www.postgresql.org/docs/9.4/interactive/runtime-config-logging.html

log_error_verbosity (enum)

Controls the amount of detail written in the server log for each message that is logged. Valid values are TERSE, DEFAULT, and VERBOSE, each adding more fields to displayed messages. TERSE excludes the logging of DETAIL, HINT, QUERY, and CONTEXT error information. VERBOSE output includes the SQLSTATE error code (see also Appendix A) and the source code file name, function name, and line number that generated the error. Only superusers can change this setting.


Sort of surprised that the SELECT showed up when log_statement = none.

Did you reload Postgres after making changes to the config?


Server version is 9.4.0, OS is Ubuntu 12.04 LTS



--
Regards, Andrey Lizenko


--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx


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