[MDEV-18022] MariaDB document have old information Created: 2018-12-17  Updated: 2020-07-23  Resolved: 2020-07-23

Status: Closed
Project: MariaDB Server
Component/s: Configuration, Documentation
Affects Version/s: 10.1.37
Fix Version/s: N/A

Type: Bug Priority: Minor
Reporter: y-taka Assignee: Ian Gilfillan
Resolution: Fixed Votes: 0
Labels: galera
Environment:

CentOS 7.3



 Description   

I installed vanilla MariaDB 10.1.37, and enabled wsrep library.
When I checked default wsrep_provider_option setting, found some wrong points :

(1)
"evs.suspect_timeout" default value (PT5S) is different from reference manual :

https://mariadb.com/kb/en/library/wsrep_provider_options/#evssuspect_timeout
> Default: PT10S

(2)
The magnitude correlation among "evs.suspect_timeout" and "evs.inactive_timeout" and "evs.install_timeout = PT7.5S" is deffer from the codership manual recommendation :

http://galeracluster.com/documentation-webpages/configurationtips.html

recomended :
evs.suspect_timeout < evs.inactive_timeout (default : 15sec) ≦ evs.install_timeout (default : 15sec)

MariaDB default:
evs.suspect_timeout < evs.install_timeout (default : 7.5sec) < evs.inactive_timeout (default : 15sec)  

MariaDB [(none)]> show global variables like "wsrep_provider_%"\G
*************************** 1. row ***************************
Variable_name: wsrep_provider_options
        Value: ...(cut)... evs.auto_evict = 0; evs.causal_keepalive_period = PT1S; evs.debug_log_mask = 0x1; evs.delay_margin = PT1S; evs.delayed_keep_period = PT30S; evs.inactive_check_period = PT0.5S; evs.inactive_timeout = PT15S; evs.info_log_mask = 0; evs.install_timeout = PT7.5S; evs.join_retrans_period = PT1S; evs.keepalive_period = PT1S; evs.max_install_timeouts = 3; evs.send_window = 4; evs.stats_report_period = PT1M; evs.suspect_timeout = PT5S; evs.use_aggregate = true; evs.user_send_window = 2; evs.version = 0; evs.view_forget_timeout = P1D; ...(cut)...
1 row in set (0.00 sec)
 
MariaDB [(none)]> select version();
+-----------------+
| version()       |
+-----------------+
| 10.1.37-MariaDB |
+-----------------+
1 row in set (0.00 sec)


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