diff options
Diffstat (limited to 'sql/log_event.cc')
| -rw-r--r-- | sql/log_event.cc | 37 |
1 files changed, 34 insertions, 3 deletions
diff --git a/sql/log_event.cc b/sql/log_event.cc index 40e29e58ab6..f32fcb0056c 100644 --- a/sql/log_event.cc +++ b/sql/log_event.cc @@ -1271,10 +1271,22 @@ bool Query_log_event::write(IO_CACHE* file) int8store(start, table_map_for_update); start+= 8; } + if (master_data_written != 0) + { + /* + Q_MASTER_DATA_WRITTEN_CODE only exists in relay logs where the master + has binlog_version<4 and the slave has binlog_version=4. See comment + for master_data_written in log_event.h for details. + */ + *start++= Q_MASTER_DATA_WRITTEN_CODE; + int4store(start, master_data_written); + start+= 4; + } + /* NOTE: When adding new status vars, please don't forget to update - the MAX_SIZE_LOG_EVENT_STATUS in log_event.h and update function - code_name in this file. + the MAX_SIZE_LOG_EVENT_STATUS in log_event.h and update the function + code_name() in this file. Here there could be code like if (command-line-option-which-says-"log_this_variable" && inited) @@ -1354,6 +1366,7 @@ Query_log_event::Query_log_event(THD* thd_arg, const char* query_arg, auto_increment_offset(thd_arg->variables.auto_increment_offset), lc_time_names_number(thd_arg->variables.lc_time_names->number), charset_database_number(0), + master_data_written(0), table_map_for_update((ulonglong)thd_arg->table_map_for_update) { time_t end_time; @@ -1481,6 +1494,7 @@ code_name(int code) case Q_LC_TIME_NAMES_CODE: return "Q_LC_TIME_NAMES_CODE"; case Q_CHARSET_DATABASE_CODE: return "Q_CHARSET_DATABASE_CODE"; case Q_TABLE_MAP_FOR_UPDATE_CODE: return "Q_TABLE_MAP_FOR_UPDATE_CODE"; + case Q_MASTER_DATA_WRITTEN_CODE: return "Q_MASTER_DATA_WRITTEN_CODE"; } sprintf(buf, "CODE#%d", code); return buf; @@ -1518,7 +1532,7 @@ Query_log_event::Query_log_event(const char* buf, uint event_len, flags2_inited(0), sql_mode_inited(0), charset_inited(0), auto_increment_increment(1), auto_increment_offset(1), time_zone_len(0), lc_time_names_number(0), charset_database_number(0), - table_map_for_update(0) + table_map_for_update(0), master_data_written(0) { ulong data_len; uint32 tmp; @@ -1574,6 +1588,18 @@ Query_log_event::Query_log_event(const char* buf, uint event_len, DBUG_PRINT("info", ("Query_log_event has status_vars_len: %u", (uint) status_vars_len)); tmp-= 2; + } + else + { + /* + server version < 5.0 / binlog_version < 4 master's event is + relay-logged with storing the original size of the event in + Q_MASTER_DATA_WRITTEN_CODE status variable. + The size is to be restored at reading Q_MASTER_DATA_WRITTEN_CODE-marked + event from the relay log. + */ + DBUG_ASSERT(description_event->binlog_version < 4); + master_data_written= data_written; } /* We have parsed everything we know in the post header for QUERY_EVENT, @@ -1665,6 +1691,11 @@ Query_log_event::Query_log_event(const char* buf, uint event_len, table_map_for_update= uint8korr(pos); pos+= 8; break; + case Q_MASTER_DATA_WRITTEN_CODE: + CHECK_SPACE(pos, end, 4); + data_written= master_data_written= uint4korr(pos); + pos+= 4; + break; default: /* That's why you must write status vars in growing order of code */ DBUG_PRINT("info",("Query_log_event has unknown status vars (first has\ |