| Bug #72955 | mysql_install_db fails to recognize rpl_semi_sync_slave_enabled option | ||
|---|---|---|---|
| Submitted: | 11 Jun 2014 10:06 | Modified: | 12 Jun 2014 6:11 |
| Reporter: | Nilnandan Joshi | Email Updates: | |
| Status: | Verified | Impact on me: | |
| Category: | MySQL Server: Replication | Severity: | S3 (Non-critical) |
| Version: | 5.6.19, 5.6.20 | OS: | Any |
| Assigned to: | CPU Architecture: | Any | |
| Tags: | 5.6.19 | ||
[11 Jun 2014 10:06]
Nilnandan Joshi
[12 Jun 2014 6:11]
MySQL Verification Team
Hello Joshi, Thank you for the report. Verified as described. Thanks, Umesh
[12 Jun 2014 6:13]
MySQL Verification Team
How to repeat steps for Dev's: // 1. Download latest build from internal repo 2. Use mysql_install_db which initializes the MySQL data directory and creates the system tables (my.cnf - just datadir, basedir, and socket/pid set) cd /path/to/extracted build/ [ushastry@cluster-repo mysql-advanced-5.6.20]$ scripts/mysql_install_db --defaults-file=./my.cnf --user=mysql .. <snip> 3. Bring up mysqld [ushastry@cluster-repo mysql-advanced-5.6.20]$ bin/mysqld_safe --defaults-file=./my.cnf --user=mysql & [1] 22196 [ushastry@cluster-repo mysql-advanced-5.6.20]$ 140614 02:11:36 mysqld_safe Logging to '/data/ushastry/server/mysql-advanced-5.6.20/data/cluster-repo.err'. 140614 02:11:36 mysqld_safe Starting mysqld daemon with databases from /data/ushastry/server/mysql-advanced-5.6.20/data 4. Semisynchronous Replication Installation and Configuration (see - http://dev.mysql.com/doc/refman/5.6/en/replication-semisync-installation.html) [ushastry@cluster-repo mysql-advanced-5.6.20]$ bin/mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 5.6.20-enterprise-commercial-advanced-log MySQL Enterprise Server - Advanced Edition (Commercial) Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> select version(); +-------------------------------------------+ | version() | +-------------------------------------------+ | 5.6.20-enterprise-commercial-advanced-log | +-------------------------------------------+ 1 row in set (0.00 sec) mysql> INSTALL PLUGIN rpl_semi_sync_master SONAME 'semisync_master.so'; Query OK, 0 rows affected (0.02 sec) mysql> INSTALL PLUGIN rpl_semi_sync_slave SONAME 'semisync_slave.so'; Query OK, 0 rows affected (0.02 sec) mysql> show plugins; +----------------------------+----------+--------------------+--------------------+-------------+ | Name | Status | Type | Library | License | +----------------------------+----------+--------------------+--------------------+-------------+ | binlog | ACTIVE | STORAGE ENGINE | NULL | PROPRIETARY | .. .. | rpl_semi_sync_master | ACTIVE | REPLICATION | semisync_master.so | PROPRIETARY | | rpl_semi_sync_slave | ACTIVE | REPLICATION | semisync_slave.so | PROPRIETARY | +----------------------------+----------+--------------------+--------------------+-------------+ 45 rows in set (0.01 sec) mysql> mysql> show global variables like 'rpl_semi_sync_slave%'; +---------------------------------+-------+ | Variable_name | Value | +---------------------------------+-------+ | rpl_semi_sync_slave_enabled | OFF | | rpl_semi_sync_slave_trace_level | 32 | +---------------------------------+-------+ 2 rows in set (0.00 sec) mysql> SET GLOBAL rpl_semi_sync_slave_enabled = 1; Query OK, 0 rows affected (0.00 sec) mysql> show global variables like 'rpl_semi_sync_slave%'; +---------------------------------+-------+ | Variable_name | Value | +---------------------------------+-------+ | rpl_semi_sync_slave_enabled | ON | | rpl_semi_sync_slave_trace_level | 32 | +---------------------------------+-------+ 2 rows in set (0.00 sec) mysql> \q Bye [ushastry@cluster-repo mysql-advanced-5.6.20]$ 5. Bring down mysqld, invoke mysql_install_db with --rpl_semi_sync_slave_enabled=ON [ushastry@cluster-repo mysql-advanced-5.6.20]$ scripts/mysql_install_db --defaults-file=./my.cnf --rpl_semi_sync_slave_enabled=ON --user=mysql Installing MySQL system tables...2014-06-14 02:19:33 0 [Warning] option 'expire_logs_days': unsigned value 100 adjusted to 99 2014-06-14 02:19:33 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2014-06-14 02:19:33 22508 [Warning] Buffered warning: Changed limits: max_open_files: 1024 (requested 5000) 2014-06-14 02:19:33 22508 [Warning] Buffered warning: Changed limits: table_cache: 431 (requested 2000) 2014-06-14 02:19:33 22508 [Note] InnoDB: Using atomics to ref count buffer pool pages 2014-06-14 02:19:33 22508 [Note] InnoDB: The InnoDB memory heap is disabled 2014-06-14 02:19:33 22508 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2014-06-14 02:19:33 22508 [Note] InnoDB: Compressed tables use zlib 1.2.3 2014-06-14 02:19:33 22508 [Note] InnoDB: Using Linux native AIO 2014-06-14 02:19:33 22508 [Note] InnoDB: Not using CPU crc32 instructions 2014-06-14 02:19:33 22508 [Note] InnoDB: Initializing buffer pool, size = 128.0M 2014-06-14 02:19:33 22508 [Note] InnoDB: Completed initialization of buffer pool 2014-06-14 02:19:33 22508 [Note] InnoDB: Highest supported file format is Barracuda. 2014-06-14 02:19:33 22508 [Note] InnoDB: 128 rollback segment(s) are active. 2014-06-14 02:19:33 22508 [Note] InnoDB: Waiting for purge to start 2014-06-14 02:19:33 22508 [Note] InnoDB: 5.6.20 started; log sequence number 1659268 2014-06-14 02:19:33 22508 [ERROR] ./bin/mysqld: unknown variable 'rpl_semi_sync_slave_enabled=ON' <-------------- 2014-06-14 02:19:33 22508 [ERROR] Aborting
[12 Jun 2014 6:17]
MySQL Verification Team
Looking at the manual page - http://dev.mysql.com/doc/refman/5.6/en/server-system-variables.html#sysvar_rpl_semi_sync_s... There are no "Command-Line Format","Option-File Format" options available for this option.. It is assumed that non mysql_install_db options are passed to mysqld but in this case it is complaning for the same. It would be good if this is documented if not allowed.
[16 Jun 2014 9:53]
Libing Song
Posted by developer: mysql_install_db starts server in bootstrap mode and plugins listed in mysql.plugin will not be load automatically at server startup. For this bug, the semisync plugins were not be loaded when starting server through 'mysql_install_db'. So the server reported "unknown variable 'rpl_semi_sync_slave_enabled=ON'".
