Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Fixed
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10.1, 10.3.6, 10.2
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None
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CentOS 7.4; Galera 2 Nodes
Description
Cannot resume Node SYNCED state when wsrep_desync is done after FTWRL
1. Issue ' flush tables with read lock;' on Galera Node
MariaDB [(none)]> flush tables with read lock;
Query OK, 0 rows affected (0.000 sec)
2. Set wsrep_desync – Command hangs and wsrep_desync=1 is not applied ,
but afterwards cannot resume SYNCED state
MariaDB [(none)]> set global wsrep_desync=1;
^CCtrl-C – query killed. Continuing normally.
^CCtrl-C – query killed. Continuing normally.
ERROR 2013 (HY000): Lost connection to MySQL server during query
MariaDB [(none)]> show processlist ;
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id: 81
Current database: *** NONE ***
------------------------------------------------------------------------------------------------
| Id | User | Host | db | Command | Time | State | Info | Progress |
------------------------------------------------------------------------------------------------
| 1 | system user | NULL | Sleep | 3331 | WSREP aborter idle | NULL | 0.000 | |
| 2 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 4 | system user | NULL | Daemon | NULL | InnoDB purge coordinator | NULL | 0.000 | |
| 5 | system user | NULL | Daemon | NULL | InnoDB purge worker | NULL | 0.000 | |
| 3 | system user | NULL | Daemon | NULL | InnoDB purge worker | NULL | 0.000 | |
| 6 | system user | NULL | Daemon | NULL | InnoDB purge worker | NULL | 0.000 | |
| 7 | system user | NULL | Daemon | NULL | InnoDB shutdown handler | NULL | 0.000 | |
| 9 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 8 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 10 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 26 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 17 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 16 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 19 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 20 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 22 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 23 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 18 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 24 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 21 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 14 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 25 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 35 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 27 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 13 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 34 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 11 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 30 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 37 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 15 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 33 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 32 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 31 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 12 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 55 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 38 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 51 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 42 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 43 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 36 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 41 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 45 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 44 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 39 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 48 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 46 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 47 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 50 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 52 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 53 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 40 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 28 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 49 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 29 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 58 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 59 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 61 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 56 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 60 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 62 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 57 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 63 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 64 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 54 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 65 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 69 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 66 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 67 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 70 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 68 | system user | NULL | Sleep | 3331 | NULL | NULL | 0.000 | |
| 78 | root | localhost | NULL | Killed | 30 | NULL | set global wsrep_desync=1 | 0.000 |
| 81 | root | localhost | NULL | Query | 0 | Init | show processlist | 0.000 |
------------------------------------------------------------------------------------------------
72 rows in set (0.001 sec)
Node moved in DESYNCED state and cannot be recovered
2018-04-19 17:34:17 0 [Note] WSREP: Member 0.0 (t4w6) desyncs itself from group
2018-04-19 17:34:17 0 [Note] WSREP: Shifting SYNCED -> DONOR/DESYNCED (TO: 2)
2018-04-19 17:34:17 78 [Note] WSREP: Provider paused at 9f23373a-3e6d-11e8-b625-0646494b946c:2 (31)
MariaDB [(none)]> unlock tables ;
Query OK, 0 rows affected (0.000 sec)
MariaDB [(none)]> show variables like '%wsrep_desync%' ;
--------------------+
| Variable_name | Value |
--------------------+
| wsrep_desync | OFF |
--------------------+
1 row in set (0.002 sec)
MariaDB [(none)]> show status like 'wsrep_local_state_comment' ;
-----------------------------------------+
| Variable_name | Value |
-----------------------------------------+
| wsrep_local_state_comment | Donor/Desynced |
-----------------------------------------+
1 row in set (0.001 sec)
Attachments
Issue Links
- relates to
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- Closed
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