欢迎关注我的《深入理解MySQL主从原理 32讲 》，如下：  如果图片不能显示可查看下面链接： https://www.jianshu.com/p/d636215d767f ###一、ONGOING_ANONYMOUS_TRANSACTION_COUNT 主库 生成GTID： 这下面可以调用匿名+1 ``` (gdb) bt #0 Gtid_state::generate_automatic_gtid (this=0x308ab20, thd=0x7ffe7c000b70, specified_sidno=0, specified_gno=0, locked_sidno=0x7fffec0f38c0) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/rpl_gtid_state.cc:507 #1 0x0000000001877a61 in MYSQL_BIN_LOG::assign_automatic_gtids_to_flush_group (this=0x2e87840, first_seen=0x7ffe7c000b70) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/binlog.cc:1401 #2 0x000000000188a19c in MYSQL_BIN_LOG::process_flush_stage_queue (this=0x2e87840, total_bytes_var=0x7fffec0f3a08, rotate_var=0x7fffec0f3a07, out_queue_var=0x7fffec0f39f8) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/binlog.cc:9143 #3 0x000000000188b743 in MYSQL_BIN_LOG::ordered_commit (this=0x2e87840, thd=0x7ffe7c000b70, all=false, skip_commit=false) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/binlog.cc:9782 #4 0x0000000001889e22 in MYSQL_BIN_LOG::commit (this=0x2e87840, thd=0x7ffe7c000b70, all=false) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/binlog.cc:9033 #5 0x0000000000f802eb in ha_commit_trans (thd=0x7ffe7c000b70, all=false, ignore_global_read_lock=false) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/handler.cc:1830 #6 0x00000000016dd5b9 in trans_commit_stmt (thd=0x7ffe7c000b70) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/transaction.cc:458 #7 0x00000000015d19d1 in mysql_execute_command (thd=0x7ffe7c000b70, first_level=true) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/sql_parse.cc:5293 #8 0x00000000015d30c6 in mysql_parse (thd=0x7ffe7c000b70, parser_state=0x7fffec0f6600) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/sql_parse.cc:5901 #9 0x00000000015c6c5a in dispatch_command (thd=0x7ffe7c000b70, com_data=0x7fffec0f6d70, command=COM_QUERY) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/sql_parse.cc:1490 #10 0x00000000015c59e7 in do_command (thd=0x7ffe7c000b70) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/sql_parse.cc:1021 #11 0x000000000170e660 in handle_connection (arg=0x34a9940) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/conn_handler/connection_handler_per_thread.cc:312 #12 0x0000000001945620 in pfs_spawn_thread (arg=0x66eee50) at /root/mysqlall/percona-server-locks-detail-5.7.22/storage/perfschema/pfs.cc:2190 #13 0x00007ffff7bc6aa1 in start_thread () from /lib64/libpthread.so.0 #14 0x00007ffff6719bcd in clone () from /lib64/libc.so.6 ``` 主库在COMMIT节点 匿名-1 ``` #0 Gtid_state::update_commit_group (this=0x308ab20, first_thd=0x7ffe7c000b70) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/rpl_gtid_state.cc:148 #1 0x000000000188a59f in MYSQL_BIN_LOG::process_commit_stage_queue (this=0x2e87840, thd=0x7ffe7c000b70, first=0x7ffe7c000b70) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/binlog.cc:9238 #2 0x000000000188bd46 in MYSQL_BIN_LOG::ordered_commit (this=0x2e87840, thd=0x7ffe7c000b70, all=false, skip_commit=false) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/binlog.cc:9921 #3 0x0000000001889e22 in MYSQL_BIN_LOG::commit (this=0x2e87840, thd=0x7ffe7c000b70, all=false) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/binlog.cc:9033 #4 0x0000000000f802eb in ha_commit_trans (thd=0x7ffe7c000b70, all=false, ignore_global_read_lock=false) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/handler.cc:1830 #5 0x00000000016dd5b9 in trans_commit_stmt (thd=0x7ffe7c000b70) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/transaction.cc:458 #6 0x00000000015d19d1 in mysql_execute_command (thd=0x7ffe7c000b70, first_level=true) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/sql_parse.cc:5293 #7 0x00000000015d30c6 in mysql_parse (thd=0x7ffe7c000b70, parser_state=0x7fffec0f6600) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/sql_parse.cc:5901 #8 0x00000000015c6c5a in dispatch_command (thd=0x7ffe7c000b70, com_data=0x7fffec0f6d70, command=COM_QUERY) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/sql_parse.cc:1490 #9 0x00000000015c59e7 in do_command (thd=0x7ffe7c000b70) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/sql_parse.cc:1021 #10 0x000000000170e660 in handle_connection (arg=0x34a9940) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/conn_handler/connection_handler_per_thread.cc:312 #11 0x0000000001945620 in pfs_spawn_thread (arg=0x66eee50) at /root/mysqlall/percona-server-locks-detail-5.7.22/storage/perfschema/pfs.cc:2190 #12 0x00007ffff7bc6aa1 in start_thread () from /lib64/libpthread.so.0 #13 0x00007ffff6719bcd in clone () from /lib64/libc.so.6 ``` 从库 GTID_APPLY的时候 调用 Gtid_log_event::do_apply_event - > set_gtid_next 匿名+1 从库是调用Gtid_state::update_gtids_impl 匿名-1 Xid_log_event::do_commit - >MYSQL_BIN_LOG::gtid_end_transaction -> update_on_commit->update_gtids_impl ###二、MASTER_AUTO_POSITION = 1栈帧 清理了所有的replay log ``` #0 Relay_log_info::purge_relay_logs (this=0x67618a0, thd=0x7ffe7c000b70, just_reset=false, errmsg=0x7fffec0f4b80, delete_only=false) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/rpl_rli.cc:1239 #1 0x00000000018cd130 in change_master (thd=0x7ffe7c000b70, mi=0x6670230, lex_mi=0x7ffe7c0037e0, preserve_logs=false) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/rpl_slave.cc:11337 #2 0x00000000018cdcac in change_master_cmd (thd=0x7ffe7c000b70) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/rpl_slave.cc:11688 #3 0x00000000015cabc5 in mysql_execute_command (thd=0x7ffe7c000b70, first_level=true) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/sql_parse.cc:3125 #4 0x00000000015d30c6 in mysql_parse (thd=0x7ffe7c000b70, parser_state=0x7fffec0f6600) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/sql_parse.cc:5901 #5 0x00000000015c6c5a in dispatch_command (thd=0x7ffe7c000b70, com_data=0x7fffec0f6d70, command=COM_QUERY) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/sql_parse.cc:1490 #6 0x00000000015c59e7 in do_command (thd=0x7ffe7c000b70) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/sql_parse.cc:1021 #7 0x000000000170e660 in handle_connection (arg=0x5f72350) at /root/mysqlall/percona-server-locks-detail-5.7.22/sql/conn_handler/connection_handler_per_thread.cc:312 #8 0x0000000001945620 in pfs_spawn_thread (arg=0x67cfa60) at /root/mysqlall/percona-server-locks-detail-5.7.22/storage/perfschema/pfs.cc:2190 #9 0x00007ffff7bc6aa1 in start_thread () from /lib64/libpthread.so.0 #10 0x00007ffff6719bcd in clone () from /lib64/libc.so.6 ```