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eb75e8705d
Problem: ======== Auto purge of relaylogs stops when relay-log-file is 'slave-relay-log.999999' and slave_parallel_threads is enabled. Analysis: ========= The problem is that in Relay_log_info::inc_group_relay_log_pos() function, when two log names are compared via strcmp() function, it gives correct result, when log name sequence numbers are of same digits(6 digits), But when the number goes to 7 digits, a 999999 compares greater than 1000000, which is wrong, hence the bug. Fix: ==== Extract the numeric extension part of the file name, convert it into unsigned long and compare. Thanks to David Zhao for the contribution.
91 lines
3.2 KiB
C
91 lines
3.2 KiB
C
/* Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
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#ifndef SQL_REPL_INCLUDED
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#define SQL_REPL_INCLUDED
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#include "rpl_filter.h"
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#ifdef HAVE_REPLICATION
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#include "slave.h"
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typedef struct st_slave_info
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{
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uint32 server_id;
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uint32 rpl_recovery_rank, master_id;
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char host[HOSTNAME_LENGTH*SYSTEM_CHARSET_MBMAXLEN+1];
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char user[USERNAME_LENGTH+1];
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char password[MAX_PASSWORD_LENGTH*SYSTEM_CHARSET_MBMAXLEN+1];
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uint16 port;
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THD* thd;
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} SLAVE_INFO;
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struct slave_connection_state;
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extern my_bool opt_show_slave_auth_info;
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extern char *master_host, *master_info_file;
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extern int max_binlog_dump_events;
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extern my_bool opt_sporadic_binlog_dump_fail;
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int start_slave(THD* thd, Master_info* mi, bool net_report);
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int stop_slave(THD* thd, Master_info* mi, bool net_report);
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bool change_master(THD* thd, Master_info* mi, bool *master_info_added);
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bool mysql_show_binlog_events(THD* thd);
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int reset_slave(THD *thd, Master_info* mi);
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int reset_master(THD* thd, rpl_gtid *init_state, uint32 init_state_len,
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ulong next_log_number);
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bool purge_master_logs(THD* thd, const char* to_log);
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bool purge_master_logs_before_date(THD* thd, time_t purge_time);
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bool log_in_use(const char* log_name);
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void adjust_linfo_offsets(my_off_t purge_offset);
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void show_binlogs_get_fields(THD *thd, List<Item> *field_list);
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bool show_binlogs(THD* thd);
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extern int init_master_info(Master_info* mi);
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void kill_zombie_dump_threads(uint32 slave_server_id);
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int check_binlog_magic(IO_CACHE* log, const char** errmsg);
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int compare_log_name(const char *log_1, const char *log_2);
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struct LOAD_FILE_IO_CACHE : public IO_CACHE
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{
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THD* thd;
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my_off_t last_pos_in_file;
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bool wrote_create_file, log_delayed;
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int (*real_read_function)(struct st_io_cache *,uchar *,size_t);
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};
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int log_loaded_block(IO_CACHE* file, uchar *Buffer, size_t Count);
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int init_replication_sys_vars();
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void mysql_binlog_send(THD* thd, char* log_ident, my_off_t pos, ushort flags);
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#ifdef HAVE_PSI_INTERFACE
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extern PSI_mutex_key key_LOCK_slave_state, key_LOCK_binlog_state;
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#endif
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void rpl_init_gtid_slave_state();
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void rpl_deinit_gtid_slave_state();
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void rpl_init_gtid_waiting();
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void rpl_deinit_gtid_waiting();
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int gtid_state_from_binlog_pos(const char *name, uint32 pos, String *out_str);
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int rpl_append_gtid_state(String *dest, bool use_binlog);
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int rpl_load_gtid_state(slave_connection_state *state, bool use_binlog);
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bool rpl_gtid_pos_check(THD *thd, char *str, size_t len);
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bool rpl_gtid_pos_update(THD *thd, char *str, size_t len);
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#else
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struct LOAD_FILE_IO_CACHE : public IO_CACHE { };
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#endif /* HAVE_REPLICATION */
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#endif /* SQL_REPL_INCLUDED */
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