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[MDEV-10570] Add Flashback support 

==== Description ====

Flashback can rollback the instances/databases/tables to an old snapshot.
It's implement on Server-Level by full image format binary logs (--binlog-row-image=FULL), so it supports all engines.
Currently, it’s a feature inside mysqlbinlog tool (with --flashback arguments).

Because the flashback binlog events will store in the memory, you should check if there is enough memory in your machine.

==== New Arguments to mysqlbinlog ====

--flashback (-B)
It will let mysqlbinlog to work on FLASHBACK mode.

==== New Arguments to mysqld ====

--flashback

Setup the server to use flashback. This enables binary log in row mode
and will enable extra logging for DDL's needed by flashback feature

==== Example ====

I have a table "t" in database "test", we can compare the output with "--flashback" and without.

#client/mysqlbinlog /data/mysqldata_10.0/binlog/mysql-bin.000001 -vv -d test -T t --start-datetime="2013-03-27 14:54:00" > /tmp/1.sql
#client/mysqlbinlog /data/mysqldata_10.0/binlog/mysql-bin.000001 -vv -d test -T t --start-datetime="2013-03-27 14:54:00" -B > /tmp/2.sql

Then, importing the output flashback file (/tmp/2.log), it can flashback your database/table to the special time (--start-datetime).
And if you know the exact postion, "--start-postion" is also works, mysqlbinlog will output the flashback logs that can flashback to "--start-postion" position.

==== Implement ====

1. As we know, if binlog_format is ROW (binlog-row-image=FULL in 10.1 and later), all columns value are store in the row event, so we can get the data before mis-operation.

2. Just do following things:

  2.1 Change Event Type, INSERT->DELETE, DELETE->INSERT.
  For example:
    INSERT INTO t VALUES (...)  ---> DELETE FROM t WHERE ...
    DELETE FROM t ... ---> INSERT INTO t VALUES (...)

  2.2 For Update_Event, swapping the SET part and WHERE part.
  For example:
    UPDATE t SET cols1 = vals1 WHERE cols2 = vals2
    --->
    UPDATE t SET cols2 = vals2 WHERE cols1 = vals1

  2.3 For Multi-Rows Event, reverse the rows sequence, from the last row to the first row.
  For example:
    DELETE FROM t WHERE id=1; DELETE FROM t WHERE id=2; ...; DELETE FROM t WHERE id=n;
    --->
    DELETE FROM t WHERE id=n; ...; DELETE FROM t WHERE id=2; DELETE FROM t WHERE id=1;

  2.4 Output those events from the last one to the first one which mis-operation happened.
  For example:
pull/293/head
Monty 9 years ago
parent
b9631b4633
commit
d75d8631ed
12 changed files with 1377 additions and 55 deletions
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  1. 4
      client/client_priv.h
  2. 251
      client/mysqlbinlog.cc
  3. 4
      mysql-test/r/mysqld--help.result
  4. 480
      mysql-test/suite/binlog/r/flashback.result
  5. 2
      mysql-test/suite/binlog/t/flashback-master.opt
  6. 163
      mysql-test/suite/binlog/t/flashback.test
  7. 8
      mysql-test/suite/wsrep/r/binlog_format.result
  8. 418
      sql/log_event.cc
  9. 76
      sql/log_event.h
  10. 18
      sql/mysqld.cc
  11. 1
      sql/mysqld.h
  12. 7
      sql/sys_vars.cc

4
client/client_priv.h
View File

@ -66,6 +66,10 @@ enum options_client
OPT_MYSQLDUMP_SLAVE_APPLY,
OPT_MYSQLDUMP_SLAVE_DATA,
OPT_MYSQLDUMP_INCLUDE_MASTER_HOST_PORT,
#ifdef WHEN_FLASHBACK_REVIEW_READY
OPT_REVIEW,
OPT_REVIEW_DBNAME, OPT_REVIEW_TABLENAME,
#endif
OPT_SLAP_CSV, OPT_SLAP_CREATE_STRING,
OPT_SLAP_AUTO_GENERATE_SQL_LOAD_TYPE, OPT_SLAP_AUTO_GENERATE_WRITE_NUM,
OPT_SLAP_AUTO_GENERATE_ADD_AUTO,

251
client/mysqlbinlog.cc
View File

@ -66,6 +66,10 @@ Rpl_filter *binlog_filter= 0;
/* Needed for Rpl_filter */
CHARSET_INFO* system_charset_info= &my_charset_utf8_general_ci;
/* Needed for Flashback */
DYNAMIC_ARRAY binlog_events; // Storing the events output string
String stop_event_string; // Storing the STOP_EVENT output string
char server_version[SERVER_VERSION_LENGTH];
ulong server_id = 0;
@ -89,7 +93,7 @@ static const char *load_groups[]=
static void error(const char *format, ...) ATTRIBUTE_FORMAT(printf, 1, 2);
static void warning(const char *format, ...) ATTRIBUTE_FORMAT(printf, 1, 2);
static bool one_database=0, to_last_remote_log= 0, disable_log_bin= 0;
static bool one_database=0, one_table=0, to_last_remote_log= 0, disable_log_bin= 0;
static bool opt_hexdump= 0, opt_version= 0;
const char *base64_output_mode_names[]=
{"NEVER", "AUTO", "ALWAYS", "UNSPEC", "DECODE-ROWS", NullS};
@ -99,6 +103,7 @@ TYPELIB base64_output_mode_typelib=
static enum_base64_output_mode opt_base64_output_mode= BASE64_OUTPUT_UNSPEC;
static char *opt_base64_output_mode_str= NullS;
static char* database= 0;
static char* table= 0;
static my_bool force_opt= 0, short_form= 0, remote_opt= 0;
static my_bool debug_info_flag, debug_check_flag;
static my_bool force_if_open_opt= 1;
@ -132,6 +137,12 @@ static MYSQL* mysql = NULL;
static const char* dirname_for_local_load= 0;
static bool opt_skip_annotate_row_events= 0;
static my_bool opt_flashback;
#ifdef WHEN_FLASHBACK_REVIEW_READY
static my_bool opt_flashback_review;
static char *flashback_review_dbname, *flashback_review_tablename;
#endif
/**
Pointer to the Format_description_log_event of the currently active binlog.
@ -790,6 +801,23 @@ print_skip_replication_statement(PRINT_EVENT_INFO *pinfo, const Log_event *ev)
pinfo->skip_replication= cur_val;
}
/**
Indicates whether the given table should be filtered out,
according to the --table=X option.
@param log_tblname Name of table.
@return nonzero if the table with the given name should be
filtered out, 0 otherwise.
*/
static bool shall_skip_table(const char *log_tblname)
{
return one_table &&
(log_tblname != NULL) &&
strcmp(log_tblname, table);
}
/**
Prints the given event in base64 format.
@ -952,6 +980,12 @@ Exit_status process_event(PRINT_EVENT_INFO *print_event_info, Log_event *ev,
Exit_status retval= OK_CONTINUE;
IO_CACHE *const head= &print_event_info->head_cache;
/* Bypass flashback settings to event */
ev->is_flashback= opt_flashback;
#ifdef WHEN_FLASHBACK_REVIEW_READY
ev->need_flashback_review= opt_flashback_review;
#endif
/*
Format events are not concerned by --offset and such, we always need to
read them to be able to process the wanted events.
@ -988,7 +1022,7 @@ Exit_status process_event(PRINT_EVENT_INFO *print_event_info, Log_event *ev,
retval= OK_STOP;
goto end;
}
if (!short_form)
if (!short_form && !opt_flashback)
fprintf(result_file, "# at %s\n",llstr(pos,ll_buff));
if (!opt_hexdump)
@ -1214,12 +1248,128 @@ Exit_status process_event(PRINT_EVENT_INFO *print_event_info, Log_event *ev,
case TABLE_MAP_EVENT:
{
Table_map_log_event *map= ((Table_map_log_event *)ev);
if (shall_skip_database(map->get_db_name()))
if (shall_skip_database(map->get_db_name()) ||
shall_skip_table(map->get_table_name()))
{
print_event_info->m_table_map_ignored.set_table(map->get_table_id(), map);
destroy_evt= FALSE;
goto end;
}
#ifdef WHEN_FLASHBACK_REVIEW_READY
/* Create review table for Flashback */
if (opt_flashback_review)
{
// Check if the table was already created?
Table_map_log_event *exist_table;
exist_table= print_event_info->m_table_map.get_table(map->get_table_id());
if (!exist_table)
{
MYSQL *conn;
MYSQL_RES *res;
MYSQL_ROW row;
char tmp_sql[8096];
int tmp_sql_offset;
conn = mysql_init(NULL);
if (!mysql_real_connect(conn, host, user, pass,
map->get_db_name(), port, sock, 0))
{
fprintf(stderr, "%s\n", mysql_error(conn));
exit(1);
}
if (mysql_query(conn, "SET group_concat_max_len=10000;"))
{
fprintf(stderr, "%s\n", mysql_error(conn));
exit(1);
}
memset(tmp_sql, 0, sizeof(tmp_sql));
sprintf(tmp_sql, " "
"SELECT Group_concat(cols) "
"FROM (SELECT 'op_type char(1)' cols "
" UNION ALL "
" SELECT Concat('`', column_name, '_old` ', column_type, ' ', "
" IF(character_set_name IS NOT NULL, "
" Concat('character set ', character_set_name, ' '), ' '), "
" IF(collation_name IS NOT NULL, "
" Concat('collate ', collation_name, ' '), ' ')) cols "
" FROM information_schema.columns "
" WHERE table_schema = '%s' "
" AND table_name = '%s' "
" UNION ALL "
" SELECT Concat('`', column_name, '_new` ', column_type, ' ', "
" IF(character_set_name IS NOT NULL, "
" Concat('character set ', character_set_name, ' '), ' '), "
" IF(collation_name IS NOT NULL, "
" Concat('collate ', collation_name, ' '), ' ')) cols "
" FROM information_schema.columns "
" WHERE table_schema = '%s' "
" AND table_name = '%s') tmp;",
map->get_db_name(), map->get_table_name(),
map->get_db_name(), map->get_table_name());
if (mysql_query(conn, tmp_sql))
{
fprintf(stderr, "%s\n", mysql_error(conn));
exit(1);
}
res = mysql_use_result(conn);
if ((row = mysql_fetch_row(res)) != NULL) // only one row
{
if (flashback_review_dbname)
{
ev->set_flashback_review_dbname(flashback_review_dbname);
}
else
{
ev->set_flashback_review_dbname(map->get_db_name());
}
if (flashback_review_tablename)
{
ev->set_flashback_review_tablename(flashback_review_tablename);
}
else
{
memset(tmp_sql, 0, sizeof(tmp_sql));
sprintf(tmp_sql, "__%s", map->get_table_name());
ev->set_flashback_review_tablename(tmp_sql);
}
memset(tmp_sql, 0, sizeof(tmp_sql));
tmp_sql_offset= sprintf(tmp_sql, "CREATE TABLE IF NOT EXISTS");
tmp_sql_offset+= sprintf(tmp_sql + tmp_sql_offset, " `%s`.`%s` (%s) %s",
ev->get_flashback_review_dbname(),
ev->get_flashback_review_tablename(),
row[0],
print_event_info->delimiter);
}
fprintf(result_file, "%s\n", tmp_sql);
mysql_free_result(res);
mysql_close(conn);
}
else
{
char tmp_str[128];
if (flashback_review_dbname)
ev->set_flashback_review_dbname(flashback_review_dbname);
else
ev->set_flashback_review_dbname(map->get_db_name());
if (flashback_review_tablename)
ev->set_flashback_review_tablename(flashback_review_tablename);
else
{
memset(tmp_str, 0, sizeof(tmp_str));
sprintf(tmp_str, "__%s", map->get_table_name());
ev->set_flashback_review_tablename(tmp_str);
}
}
}
#endif
/*
The Table map is to be printed, so it's just the time when we may
print the kept Annotate event (if there is any).
@ -1294,6 +1444,38 @@ end:
*/
if (ev)
{
/* Holding event output if needed */
if (!ev->output_buf.is_empty())
{
LEX_STRING tmp_str;
tmp_str.length= ev->output_buf.length();
tmp_str.str= ev->output_buf.release();
if (opt_flashback)
{
if (ev_type == STOP_EVENT)
stop_event_string.reset(tmp_str.str, tmp_str.length, tmp_str.length,
&my_charset_bin);
else
{
if (push_dynamic(&binlog_events, (uchar *) &tmp_str))
{
error("Out of memory: can't allocate memory to store the flashback events.");
exit(1);
}
}
}
else
{
my_fwrite(result_file, (const uchar *) tmp_str.str, tmp_str.length,
MYF(MY_NABP));
my_free(tmp_str.str);
}
}
if (remote_opt)
ev->temp_buf= 0;
if (destroy_evt) /* destroy it later if not set (ignored table map) */
delete ev;
}
@ -1352,6 +1534,13 @@ static struct my_option my_options[] =
"already have. NOTE: you will need a SUPER privilege to use this option.",
&disable_log_bin, &disable_log_bin, 0, GET_BOOL,
NO_ARG, 0, 0, 0, 0, 0, 0},
{"flashback", 'B', "Flashback feature can rollback you committed data to a special time point.",
#ifdef WHEN_FLASHBACK_REVIEW_READY
"before Flashback feature writing a row, original row can insert to review-dbname.review-tablename,"
"and mysqlbinlog will login mysql by user(-u) and password(-p) and host(-h).",
#endif
&opt_flashback, &opt_flashback, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0,
0, 0},
{"force-if-open", 'F', "Force if binlog was not closed properly.",
&force_if_open_opt, &force_if_open_opt, 0, GET_BOOL, NO_ARG,
1, 0, 0, 0, 0, 0},
@ -1395,6 +1584,19 @@ static struct my_option my_options[] =
"prefix for the file names.",
&result_file_name, &result_file_name, 0, GET_STR, REQUIRED_ARG,
0, 0, 0, 0, 0, 0},
#ifdef WHEN_FLASHBACK_REVIEW_READY
{"review", opt_flashback_review, "Print review sql in output file.",
&opt_flashback_review, &opt_flashback_review, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0,
0, 0},
{"review-dbname", opt_flashback_flashback_review_dbname,
"Writing flashback original row data into this db",
&flashback_review_dbname, &flashback_review_dbname,
0, GET_STR_ALLOC, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
{"review-tablename", opt_flashback_flashback_review_tablename,
"Writing flashback original row data into this table",
&flashback_review_tablename, &flashback_review_tablename,
0, GET_STR_ALLOC, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#endif
{"server-id", 0,
"Extract only binlog entries created by the server having the given id.",
&server_id, &server_id, 0, GET_ULONG,
@ -1458,6 +1660,9 @@ static struct my_option my_options[] =
&stop_position, &stop_position, 0, GET_ULL,
REQUIRED_ARG, (longlong)(~(my_off_t)0), BIN_LOG_HEADER_SIZE,
(ulonglong)(~(my_off_t)0), 0, 0, 0},
{"table", 'T', "List entries for just this table (local log only).",
&table, &table, 0, GET_STR_ALLOC, REQUIRED_ARG,
0, 0, 0, 0, 0, 0},
{"to-last-log", 't', "Requires -R. Will not stop at the end of the \
requested binlog but rather continue printing until the end of the last \
binlog of the MySQL server. If you send the output to the same MySQL server, \
@ -1567,6 +1772,7 @@ static void cleanup()
{
my_free(pass);
my_free(database);
my_free(table);
my_free(host);
my_free(user);
my_free(const_cast<char*>(dirname_for_local_load));
@ -1637,6 +1843,9 @@ get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
break;
#endif
#include <sslopt-case.h>
case 'B':
opt_flashback= 1;
break;
case 'd':
one_database = 1;
break;
@ -1658,10 +1867,18 @@ get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
case 'R':
remote_opt= 1;
break;
case 'T':
one_table= 1;
break;
case OPT_MYSQL_PROTOCOL:
opt_protocol= find_type_or_exit(argument, &sql_protocol_typelib,
opt->name);
break;
#ifdef WHEN_FLASHBACK_REVIEW_READY
case opt_flashback_review:
opt_flashback_review= 1;
break;
#endif
case OPT_START_DATETIME:
start_datetime= convert_str_to_timestamp(start_datetime_str);
break;
@ -1862,7 +2079,7 @@ static Exit_status dump_log_entries(const char* logname)
dump_local_log_entries(&print_event_info, logname));
/* Set delimiter back to semicolon */
if (!opt_raw_mode)
if (!opt_raw_mode && !opt_flashback)
fprintf(result_file, "DELIMITER ;\n");
strmov(print_event_info.delimiter, ";");
return rc;
@ -2660,6 +2877,9 @@ int main(int argc, char** argv)
DBUG_ENTER("main");
DBUG_PROCESS(argv[0]);
(void) my_init_dynamic_array(&binlog_events, sizeof(LEX_STRING), 1024, 1024,
MYF(0));
my_init_time(); // for time functions
tzset(); // set tzname
@ -2795,6 +3015,29 @@ int main(int argc, char** argv)
start_position= BIN_LOG_HEADER_SIZE;
}
/*
If enable flashback, need to print the events from the end to the
beginning
*/
if (opt_flashback)
{
for (uint i= binlog_events.elements; i > 0; --i)
{
LEX_STRING *event_str= dynamic_element(&binlog_events, i - 1,
LEX_STRING*);
fprintf(result_file, "%s", event_str->str);
my_free(event_str->str);
}
fprintf(result_file, "COMMIT\n/*!*/;\n");
}
delete_dynamic(&binlog_events);
/* Set delimiter back to semicolon */
if (!stop_event_string.is_empty())
fprintf(result_file, "%s", stop_event_string.ptr());
if (!opt_raw_mode && opt_flashback)
fprintf(result_file, "DELIMITER ;\n");
if (!opt_raw_mode)
{
/*

4
mysql-test/r/mysqld--help.result
View File

@ -208,6 +208,9 @@ The following options may be given as the first argument:
--extra-port=# Extra port number to use for tcp connections in a
one-thread-per-connection manner. 0 means don't use
another port
--flashback Setup the server to use flashback. This enables binary
log in row mode and will enable extra logging for DDL's
needed by flashback feature
--flush Flush MyISAM tables to disk between SQL commands
--flush-time=# A dedicated thread is created to flush all tables at the
given interval
@ -1233,6 +1236,7 @@ explicit-defaults-for-timestamp FALSE
external-locking FALSE
extra-max-connections 1
extra-port 0
flashback FALSE
flush FALSE
flush-time 0
ft-boolean-syntax + -><()~*:""&|

480
mysql-test/suite/binlog/r/flashback.result
View File

@ -0,0 +1,480 @@
#
# Preparatory cleanup.
#
DROP TABLE IF EXISTS t1;
#
# We need a fixed timestamp to avoid varying results.
#
SET timestamp=1000000000;
#
# Delete all existing binary logs.
#
RESET MASTER;
CREATE TABLE t1 (
c01 tinyint,
c02 smallint,
c03 mediumint,
c04 int,
c05 bigint,
c06 char(10),
c07 varchar(20),
c08 TEXT
) ENGINE=InnoDB;
#
# Insert data to t1
#
INSERT INTO t1 VALUES(0,0,0,0,0,'','','');
INSERT INTO t1 VALUES(1,2,3,4,5, "abc", "abcdefg", "abcedfghijklmnopqrstuvwxyz");
INSERT INTO t1 VALUES(127, 32767, 8388607, 2147483647, 9223372036854775807, repeat('a', 10), repeat('a', 20), repeat('a', 255));
#
# Update t1
#
UPDATE t1 SET c01=100 WHERE c02=0 OR c03=3;
#
# Clear t1
#
DELETE FROM t1;
FLUSH LOGS;
#
# Show mysqlbinlog result without -B
#
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=1*/;
/*!40019 SET @@session.max_insert_delayed_threads=0*/;
/*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/;
DELIMITER /*!*/;
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Start: binlog v 4, server v #.##.## created 010909 9:46:40 at startup
ROLLBACK/*!*/;
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Gtid list []
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Binlog checkpoint master-bin.000001
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX GTID 0-1-1 ddl
/*!100101 SET @@session.skip_parallel_replication=0*//*!*/;
/*!100001 SET @@session.gtid_domain_id=0*//*!*/;
/*!100001 SET @@session.server_id=1*//*!*/;
/*!100001 SET @@session.gtid_seq_no=1*//*!*/;
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Query thread_id=# exec_time=# error_code=0
use `test`/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.pseudo_thread_id=#/*!*/;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=0, @@session.unique_checks=1, @@session.autocommit=1, @@session.check_constraint_checks=1/*!*/;
SET @@session.sql_mode=1342177280/*!*/;
SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/;
/*!\C latin1 *//*!*/;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8/*!*/;
SET @@session.lc_time_names=0/*!*/;
SET @@session.collation_database=DEFAULT/*!*/;
CREATE TABLE t1 (
c01 tinyint,
c02 smallint,
c03 mediumint,
c04 int,
c05 bigint,
c06 char(10),
c07 varchar(20),
c08 TEXT
) ENGINE=InnoDB
/*!*/;
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX GTID 0-1-2 trans
/*!100001 SET @@session.gtid_seq_no=2*//*!*/;
BEGIN
/*!*/;
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Table_map: `test`.`t1` mapped to number #
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Write_rows: table id # flags: STMT_END_F
### INSERT INTO `test`.`t1`
### SET
### @1=0 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=0 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=0 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=0 /* INT meta=0 nullable=1 is_null=0 */
### @5=0 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Xid = #
COMMIT/*!*/;
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX GTID 0-1-3 trans
/*!100001 SET @@session.gtid_seq_no=3*//*!*/;
BEGIN
/*!*/;
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Table_map: `test`.`t1` mapped to number #
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Write_rows: table id # flags: STMT_END_F
### INSERT INTO `test`.`t1`
### SET
### @1=1 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=2 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=3 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=4 /* INT meta=0 nullable=1 is_null=0 */
### @5=5 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='abc' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='abcdefg' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='abcedfghijklmnopqrstuvwxyz' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Xid = #
COMMIT/*!*/;
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX GTID 0-1-4 trans
/*!100001 SET @@session.gtid_seq_no=4*//*!*/;
BEGIN
/*!*/;
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Table_map: `test`.`t1` mapped to number #
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Write_rows: table id # flags: STMT_END_F
### INSERT INTO `test`.`t1`
### SET
### @1=127 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=32767 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=8388607 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=2147483647 /* INT meta=0 nullable=1 is_null=0 */
### @5=9223372036854775807 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='aaaaaaaaaa' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='aaaaaaaaaaaaaaaaaaaa' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Xid = #
COMMIT/*!*/;
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX GTID 0-1-5 trans
/*!100001 SET @@session.gtid_seq_no=5*//*!*/;
BEGIN
/*!*/;
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Table_map: `test`.`t1` mapped to number #
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Update_rows: table id # flags: STMT_END_F
### UPDATE `test`.`t1`
### WHERE
### @1=0 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=0 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=0 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=0 /* INT meta=0 nullable=1 is_null=0 */
### @5=0 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
### SET
### @1=100 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=0 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=0 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=0 /* INT meta=0 nullable=1 is_null=0 */
### @5=0 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
### UPDATE `test`.`t1`
### WHERE
### @1=1 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=2 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=3 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=4 /* INT meta=0 nullable=1 is_null=0 */
### @5=5 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='abc' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='abcdefg' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='abcedfghijklmnopqrstuvwxyz' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
### SET
### @1=100 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=2 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=3 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=4 /* INT meta=0 nullable=1 is_null=0 */
### @5=5 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='abc' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='abcdefg' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='abcedfghijklmnopqrstuvwxyz' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Xid = #
COMMIT/*!*/;
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX GTID 0-1-6 trans
/*!100001 SET @@session.gtid_seq_no=6*//*!*/;
BEGIN
/*!*/;
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Table_map: `test`.`t1` mapped to number #
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Delete_rows: table id # flags: STMT_END_F
### DELETE FROM `test`.`t1`
### WHERE
### @1=100 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=0 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=0 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=0 /* INT meta=0 nullable=1 is_null=0 */
### @5=0 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
### DELETE FROM `test`.`t1`
### WHERE
### @1=100 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=2 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=3 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=4 /* INT meta=0 nullable=1 is_null=0 */
### @5=5 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='abc' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='abcdefg' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='abcedfghijklmnopqrstuvwxyz' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
### DELETE FROM `test`.`t1`
### WHERE
### @1=127 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=32767 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=8388607 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=2147483647 /* INT meta=0 nullable=1 is_null=0 */
### @5=9223372036854775807 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='aaaaaaaaaa' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='aaaaaaaaaaaaaaaaaaaa' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Xid = #
COMMIT/*!*/;
# at #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Rotate to master-bin.000002 pos: 4
DELIMITER ;
# End of log file
ROLLBACK /* added by mysqlbinlog */;
/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;
#
# Show mysqlbinlog result with -B
#
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=1*/;
/*!40019 SET @@session.max_insert_delayed_threads=0*/;
/*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/;
DELIMITER /*!*/;
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Start: binlog v 4, server v #.##.## created 010909 9:46:40 at startup
ROLLBACK/*!*/;
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Gtid list []
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Binlog checkpoint master-bin.000001
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Table_map: `test`.`t1` mapped to number #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Table_map: `test`.`t1` mapped to number #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Table_map: `test`.`t1` mapped to number #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Table_map: `test`.`t1` mapped to number #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Table_map: `test`.`t1` mapped to number #
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Rotate to master-bin.000002 pos: 4
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Xid = #
BEGIN/*!*/;
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Write_rows: table id # flags: STMT_END_F
### INSERT INTO `test`.`t1`
### SET
### @1=127 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=32767 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=8388607 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=2147483647 /* INT meta=0 nullable=1 is_null=0 */
### @5=9223372036854775807 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='aaaaaaaaaa' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='aaaaaaaaaaaaaaaaaaaa' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
### INSERT INTO `test`.`t1`
### SET
### @1=100 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=2 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=3 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=4 /* INT meta=0 nullable=1 is_null=0 */
### @5=5 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='abc' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='abcdefg' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='abcedfghijklmnopqrstuvwxyz' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
### INSERT INTO `test`.`t1`
### SET
### @1=100 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=0 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=0 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=0 /* INT meta=0 nullable=1 is_null=0 */
### @5=0 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
COMMIT
/*!*/;
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Xid = #
BEGIN/*!*/;
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Update_rows: table id # flags: STMT_END_F
### UPDATE `test`.`t1`
### WHERE
### @1=100 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=2 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=3 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=4 /* INT meta=0 nullable=1 is_null=0 */
### @5=5 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='abc' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='abcdefg' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='abcedfghijklmnopqrstuvwxyz' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
### SET
### @1=1 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=2 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=3 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=4 /* INT meta=0 nullable=1 is_null=0 */
### @5=5 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='abc' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='abcdefg' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='abcedfghijklmnopqrstuvwxyz' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
### UPDATE `test`.`t1`
### WHERE
### @1=100 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=0 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=0 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=0 /* INT meta=0 nullable=1 is_null=0 */
### @5=0 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
### SET
### @1=0 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=0 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=0 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=0 /* INT meta=0 nullable=1 is_null=0 */
### @5=0 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
COMMIT
/*!*/;
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Xid = #
BEGIN/*!*/;
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Delete_rows: table id # flags: STMT_END_F
### DELETE FROM `test`.`t1`
### WHERE
### @1=127 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=32767 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=8388607 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=2147483647 /* INT meta=0 nullable=1 is_null=0 */
### @5=9223372036854775807 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='aaaaaaaaaa' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='aaaaaaaaaaaaaaaaaaaa' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
COMMIT
/*!*/;
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Xid = #
BEGIN/*!*/;
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Delete_rows: table id # flags: STMT_END_F
### DELETE FROM `test`.`t1`
### WHERE
### @1=1 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=2 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=3 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=4 /* INT meta=0 nullable=1 is_null=0 */
### @5=5 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='abc' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='abcdefg' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='abcedfghijklmnopqrstuvwxyz' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
COMMIT
/*!*/;
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Xid = #
BEGIN/*!*/;
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Delete_rows: table id # flags: STMT_END_F
### DELETE FROM `test`.`t1`
### WHERE
### @1=0 /* TINYINT meta=0 nullable=1 is_null=0 */
### @2=0 /* SHORTINT meta=0 nullable=1 is_null=0 */
### @3=0 /* MEDIUMINT meta=0 nullable=1 is_null=0 */
### @4=0 /* INT meta=0 nullable=1 is_null=0 */
### @5=0 /* LONGINT meta=0 nullable=1 is_null=0 */
### @6='' /* STRING(10) meta=65034 nullable=1 is_null=0 */
### @7='' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
### @8='' /* BLOB/TEXT meta=2 nullable=1 is_null=0 */
COMMIT
/*!*/;
#010909 9:46:40 server id 1 end_log_pos # CRC32 XXX Query thread_id=# exec_time=# error_code=0
use `test`/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.pseudo_thread_id=#/*!*/;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=0, @@session.unique_checks=1, @@session.autocommit=1, @@session.check_constraint_checks=1/*!*/;
SET @@session.sql_mode=1342177280/*!*/;
SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/;
/*!\C latin1 *//*!*/;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8/*!*/;
SET @@session.lc_time_names=0/*!*/;
SET @@session.collation_database=DEFAULT/*!*/;
COMMIT
/*!*/;
DELIMITER ;
# End of log file
ROLLBACK /* added by mysqlbinlog */;
/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;
#
# Insert data to t1
#
TRUNCATE TABLE t1;
INSERT INTO t1 VALUES(0,0,0,0,0,'','','');
INSERT INTO t1 VALUES(1,2,3,4,5, "abc", "abcdefg", "abcedfghijklmnopqrstuvwxyz");
INSERT INTO t1 VALUES(127, 32767, 8388607, 2147483647, 9223372036854775807, repeat('a', 10), repeat('a', 20), repeat('a', 60));
#
# Delete all existing binary logs.
#
RESET MASTER;
SELECT * FROM t1;
c01 c02 c03 c04 c05 c06 c07 c08
0 0 0 0 0
1 2 3 4 5 abc abcdefg abcedfghijklmnopqrstuvwxyz
127 32767 8388607 2147483647 9223372036854775807 aaaaaaaaaa aaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
#
# Operate some data
#
UPDATE t1 SET c01=20;
UPDATE t1 SET c02=200;
UPDATE t1 SET c03=2000;
DELETE FROM t1;
FLUSH LOGS;
#
# Flashback & Check the result
#
SELECT * FROM t1;
c01 c02 c03 c04 c05 c06 c07 c08
127 32767 8388607 2147483647 9223372036854775807 aaaaaaaaaa aaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
1 2 3 4 5 abc abcdefg abcedfghijklmnopqrstuvwxyz
0 0 0 0 0
RESET MASTER;
#
# UPDATE multi-rows in one event
#
BEGIN;
UPDATE t1 SET c01=10 WHERE c01=0;
UPDATE t1 SET c01=20 WHERE c01=10;
COMMIT;
FLUSH LOGS;
#
# Flashback & Check the result
#
SELECT * FROM t1;
c01 c02 c03 c04 c05 c06 c07 c08
127 32767 8388607 2147483647 9223372036854775807 aaaaaaaaaa aaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
1 2 3 4 5 abc abcdefg abcedfghijklmnopqrstuvwxyz
0 0 0 0 0
DROP TABLE t1;
#
# Self-referencing foreign keys
#
CREATE TABLE t1 (a INT PRIMARY KEY, b INT, FOREIGN KEY my_fk(b) REFERENCES t1(a)) ENGINE=InnoDB;
BEGIN;
INSERT INTO t1 VALUES (1, NULL);
INSERT INTO t1 VALUES (2, 1), (3, 2), (4, 3);
COMMIT;
SELECT * FROM t1;
a b
1 NULL
2 1
3 2
4 3
RESET MASTER;
DELETE FROM t1 ORDER BY a DESC;
FLUSH LOGS;
#
# Flashback & Check the result
#
SELECT * FROM t1;
a b
1 NULL
2 1
3 2
4 3
DROP TABLE t1;

2
mysql-test/suite/binlog/t/flashback-master.opt
View File

@ -0,0 +1,2 @@
--flashback
--timezone=GMT-8

163
mysql-test/suite/binlog/t/flashback.test
View File

@ -0,0 +1,163 @@
--source include/have_log_bin.inc
--source include/have_innodb.inc
--echo #
--echo # Preparatory cleanup.
--echo #
--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings
--echo #
--echo # We need a fixed timestamp to avoid varying results.
--echo #
SET timestamp=1000000000;
--echo #
--echo # Delete all existing binary logs.
--echo #
RESET MASTER;
CREATE TABLE t1 (
c01 tinyint,
c02 smallint,
c03 mediumint,
c04 int,
c05 bigint,
c06 char(10),
c07 varchar(20),
c08 TEXT
) ENGINE=InnoDB;
--echo #
--echo # Insert data to t1
--echo #
INSERT INTO t1 VALUES(0,0,0,0,0,'','','');
INSERT INTO t1 VALUES(1,2,3,4,5, "abc", "abcdefg", "abcedfghijklmnopqrstuvwxyz");
INSERT INTO t1 VALUES(127, 32767, 8388607, 2147483647, 9223372036854775807, repeat('a', 10), repeat('a', 20), repeat('a', 255));
--echo #
--echo # Update t1
--echo #
UPDATE t1 SET c01=100 WHERE c02=0 OR c03=3;
--echo #
--echo # Clear t1
--echo #
DELETE FROM t1;
FLUSH LOGS;
--echo #
--echo # Show mysqlbinlog result without -B
--echo #
let $MYSQLD_DATADIR= `select @@datadir`;
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
--replace_regex /SQL_LOAD_MB-[0-9]-[0-9]/SQL_LOAD_MB-#-#/ /exec_time=[0-9]*/exec_time=#/ /end_log_pos [0-9]*/end_log_pos #/ /# at [0-9]*/# at #/ /Xid = [0-9]*/Xid = #/ /thread_id=[0-9]*/thread_id=#/ /table id [0-9]*/table id #/ /mapped to number [0-9]*/mapped to number #/ /server v [^ ]*/server v #.##.##/ /CRC32 0x[0-9a-f]*/CRC32 XXX/
--exec $MYSQL_BINLOG --base64-output=decode-rows -v -v $MYSQLD_DATADIR/master-bin.000001
--echo #
--echo # Show mysqlbinlog result with -B
--echo #
let $MYSQLD_DATADIR= `select @@datadir`;
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
--replace_regex /SQL_LOAD_MB-[0-9]-[0-9]/SQL_LOAD_MB-#-#/ /exec_time=[0-9]*/exec_time=#/ /end_log_pos [0-9]*/end_log_pos #/ /# at [0-9]*/# at #/ /Xid = [0-9]*/Xid = #/ /thread_id=[0-9]*/thread_id=#/ /table id [0-9]*/table id #/ /mapped to number [0-9]*/mapped to number #/ /server v [^ ]*/server v #.##.##/ /CRC32 0x[0-9a-f]*/CRC32 XXX/
--exec $MYSQL_BINLOG -B --base64-output=decode-rows -v -v $MYSQLD_DATADIR/master-bin.000001
--echo #
--echo # Insert data to t1
--echo #
TRUNCATE TABLE t1;
INSERT INTO t1 VALUES(0,0,0,0,0,'','','');
INSERT INTO t1 VALUES(1,2,3,4,5, "abc", "abcdefg", "abcedfghijklmnopqrstuvwxyz");
INSERT INTO t1 VALUES(127, 32767, 8388607, 2147483647, 9223372036854775807, repeat('a', 10), repeat('a', 20), repeat('a', 60));
--echo #
--echo # Delete all existing binary logs.
--echo #
RESET MASTER;
SELECT * FROM t1;
--echo #
--echo # Operate some data
--echo #
UPDATE t1 SET c01=20;
UPDATE t1 SET c02=200;
UPDATE t1 SET c03=2000;
DELETE FROM t1;
FLUSH LOGS;
--echo #
--echo # Flashback & Check the result
--echo #
let $MYSQLD_DATADIR= `select @@datadir`;
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
--exec $MYSQL_BINLOG -B -vv $MYSQLD_DATADIR/master-bin.000001 > $MYSQLTEST_VARDIR/tmp/mysqlbinlog_row_flashback_1.sql
--exec $MYSQL -e "SET binlog_format= ROW; source $MYSQLTEST_VARDIR/tmp/mysqlbinlog_row_flashback_1.sql;"
SELECT * FROM t1;
RESET MASTER;
--echo #
--echo # UPDATE multi-rows in one event
--echo #
BEGIN;
UPDATE t1 SET c01=10 WHERE c01=0;
UPDATE t1 SET c01=20 WHERE c01=10;
COMMIT;
FLUSH LOGS;
--echo #
--echo # Flashback & Check the result
--echo #
let $MYSQLD_DATADIR= `select @@datadir`;
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
--exec $MYSQL_BINLOG -B -vv $MYSQLD_DATADIR/master-bin.000001 > $MYSQLTEST_VARDIR/tmp/mysqlbinlog_row_flashback_2.sql
--exec $MYSQL -e "SET binlog_format= ROW; source $MYSQLTEST_VARDIR/tmp/mysqlbinlog_row_flashback_2.sql;"
SELECT * FROM t1;
DROP TABLE t1;
--echo #
--echo # Self-referencing foreign keys
--echo #
CREATE TABLE t1 (a INT PRIMARY KEY, b INT, FOREIGN KEY my_fk(b) REFERENCES t1(a)) ENGINE=InnoDB;
BEGIN;
INSERT INTO t1 VALUES (1, NULL);
INSERT INTO t1 VALUES (2, 1), (3, 2), (4, 3);
COMMIT;
SELECT * FROM t1;
# New binlog
RESET MASTER;
DELETE FROM t1 ORDER BY a DESC;
FLUSH LOGS;
--echo #
--echo # Flashback & Check the result
--echo #
let $MYSQLD_DATADIR= `select @@datadir`;
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
--exec $MYSQL_BINLOG -B -vv $MYSQLD_DATADIR/master-bin.000001 > $MYSQLTEST_VARDIR/tmp/mysqlbinlog_row_flashback_3.sql
--exec $MYSQL -e "SET binlog_format= ROW; source $MYSQLTEST_VARDIR/tmp/mysqlbinlog_row_flashback_3.sql;"
SELECT * FROM t1;
DROP TABLE t1;

8
mysql-test/suite/wsrep/r/binlog_format.result
View File

@ -8,20 +8,20 @@ Variable_name Value
binlog_format ROW
SET binlog_format=STATEMENT;
Warnings:
Warning 1105 MariaDB Galera does not support binlog format: STATEMENT
Warning 1105 MariaDB Galera and flashback does not support binlog format: STATEMENT
SHOW WARNINGS;
Level Code Message
Warning 1105 MariaDB Galera does not support binlog format: STATEMENT
Warning 1105 MariaDB Galera and flashback does not support binlog format: STATEMENT
SHOW VARIABLES LIKE 'binlog_format';
Variable_name Value
binlog_format STATEMENT
CREATE TABLE IF NOT EXISTS test.t1 AS SELECT * FROM information_schema.routines WHERE 1 = 0;
SET binlog_format=MIXED;
Warnings:
Warning 1105 MariaDB Galera does not support binlog format: MIXED
Warning 1105 MariaDB Galera and flashback does not support binlog format: MIXED
SHOW WARNINGS;
Level Code Message
Warning 1105 MariaDB Galera does not support binlog format: MIXED
Warning 1105 MariaDB Galera and flashback does not support binlog format: MIXED
SHOW VARIABLES LIKE 'binlog_format';
Variable_name Value
binlog_format MIXED

418
sql/log_event.cc
View File

@ -300,17 +300,34 @@ public:
constructor, but it would be possible to create a subclass
holding the IO_CACHE itself.
*/
Write_on_release_cache(IO_CACHE *cache, FILE *file, flag_set flags = 0)
: m_cache(cache), m_file(file), m_flags(flags)
Write_on_release_cache(IO_CACHE *cache, FILE *file, flag_set flags = 0, Log_event *ev = NULL)
: m_cache(cache), m_file(file), m_flags(flags), m_ev(ev)
{
reinit_io_cache(m_cache, WRITE_CACHE, 0L, FALSE, TRUE);
}
~Write_on_release_cache()
{
#ifdef MYSQL_CLIENT
if(m_ev == NULL)
{
copy_event_cache_to_file_and_reinit(m_cache, m_file);
if (m_flags & FLUSH_F)
fflush(m_file);
}
else // if m_ev<>NULL, then storing the output in output_buf
{
LEX_STRING tmp_str;
if (copy_event_cache_to_string_and_reinit(m_cache, &tmp_str))
exit(1);
m_ev->output_buf.append(tmp_str.str, tmp_str.length);
my_free(tmp_str.str);
}
#else /* MySQL_SERVER */
copy_event_cache_to_file_and_reinit(m_cache, m_file);
if (m_flags & FLUSH_F)
fflush(m_file);
#endif
}
/*
@ -340,6 +357,7 @@ private:
IO_CACHE *m_cache;
FILE *m_file;
flag_set m_flags;
Log_event *m_ev; // Used for Flashback
};
/*
@ -2760,7 +2778,7 @@ log_event_print_value(IO_CACHE *file, const uchar *ptr,
d= (ulong) (i64 / 1000000);
t= (ulong) (i64 % 1000000);
my_b_printf(file, "%04d-%02d-%02d %02d:%02d:%02d",
my_b_printf(file, "'%04d-%02d-%02d %02d:%02d:%02d'",
(int) (d / 10000), (int) (d % 10000) / 100, (int) (d % 100),
(int) (t / 10000), (int) (t % 10000) / 100, (int) t % 100);
return 8;
@ -2994,22 +3012,30 @@ size_t
Rows_log_event::print_verbose_one_row(IO_CACHE *file, table_def *td,
PRINT_EVENT_INFO *print_event_info,
MY_BITMAP *cols_bitmap,
const uchar *value, const uchar *prefix)
const uchar *value, const uchar *prefix,
const my_bool no_fill_output)
{
const uchar *value0= value;
const uchar *null_bits= value;
uint null_bit_index= 0;
char typestr[64]= "";
#ifdef WHEN_FLASHBACK_REVIEW_READY
/* Storing the review SQL */
IO_CACHE *review_sql= &print_event_info->review_sql_cache;
LEX_STRING review_str;
#endif
/*
Skip metadata bytes which gives the information about nullabity of master
columns. Master writes one bit for each affected column.
*/
value+= (bitmap_bits_set(cols_bitmap) + 7) / 8;
my_b_printf(file, "%s", prefix);
if (!no_fill_output)
my_b_printf(file, "%s", prefix);
for (size_t i= 0; i < td->size(); i ++)
{
size_t size;
@ -3018,47 +3044,226 @@ Rows_log_event::print_verbose_one_row(IO_CACHE *file, table_def *td,
if (bitmap_is_set(cols_bitmap, i) == 0)
continue;
my_b_printf(file, "### @%d=", static_cast<int>(i + 1));
if (!no_fill_output)
my_b_printf(file, "### @%d=", static_cast<int>(i + 1));
if (!is_null)
{
size_t fsize= td->calc_field_size((uint)i, (uchar*) value);
if (value + fsize > m_rows_end)
{
my_b_printf(file, "***Corrupted replication event was detected."
" Not printing the value***\n");
if (!no_fill_output)
my_b_printf(file, "***Corrupted replication event was detected."
" Not printing the value***\n");
value+= fsize;
return 0;
}
}
if (!(size= log_event_print_value(file,is_null? NULL: value,
td->type(i), td->field_metadata(i),
typestr, sizeof(typestr))))
if (!no_fill_output)
{
size= log_event_print_value(file,is_null? NULL: value,
td->type(i), td->field_metadata(i),
typestr, sizeof(typestr));
#ifdef WHEN_FLASHBACK_REVIEW_READY
if (need_flashback_review)
{
String tmp_str, hex_str;
IO_CACHE tmp_cache;
// Using a tmp IO_CACHE to get the value output
open_cached_file(&tmp_cache, NULL, NULL, 0, MYF(MY_WME | MY_NABP));
size= log_event_print_value(&tmp_cache, is_null? NULL: value,
td->type(i), td->field_metadata(i),
typestr, sizeof(typestr));
if (copy_event_cache_to_string_and_reinit(&tmp_cache, &review_str))
exit(1);
close_cached_file(&tmp_cache);
switch (td->type(i)) // Converting a string to HEX format
{
case MYSQL_TYPE_VARCHAR:
case MYSQL_TYPE_VAR_STRING:
case MYSQL_TYPE_STRING:
case MYSQL_TYPE_BLOB:
// Avoid write_pos changed to a new area
// tmp_str.free();
tmp_str.append(review_str.str + 1, review_str.length - 2); // Removing quotation marks
if (hex_str.alloc(tmp_str.length()*2+1)) // If out of memory
{
fprintf(stderr, "\nError: Out of memory. "
"Could not print correct binlog event.\n");
exit(1);
}
octet2hex((char*) hex_str.ptr(), tmp_str.ptr(), tmp_str.length());
my_b_printf(review_sql, ", UNHEX('%s')", hex_str.ptr());
break;
default:
tmp_str.free();
tmp_str.append(review_str.str, review_str.length);
my_b_printf(review_sql, ", %s", tmp_str.ptr());
break;
}
my_free(revieww_str.str);
}
#endif
}
else
{
IO_CACHE tmp_cache;
open_cached_file(&tmp_cache, NULL, NULL, 0, MYF(MY_WME | MY_NABP));
size= log_event_print_value(&tmp_cache,is_null? NULL: value,
td->type(i), td->field_metadata(i),
typestr, sizeof(typestr));
close_cached_file(&tmp_cache);
}
if (!size)
return 0;
if (!is_null)
value+= size;
if (print_event_info->verbose > 1)
if (print_event_info->verbose > 1 && !no_fill_output)
{
my_b_write(file, (uchar*)" /* ", 4);
my_b_printf(file, "%s ", typestr);
my_b_printf(file, "meta=%d nullable=%d is_null=%d ",
td->field_metadata(i),
td->maybe_null(i), is_null);
my_b_write(file, (uchar*)"*/", 2);
}
my_b_write_byte(file, '\n');
if (!no_fill_output)
my_b_write_byte(file, '\n');
null_bit_index++;
}
return value - value0;
}
/**
Exchange the SET part and WHERE part for the Update events.
Revert the operations order for the Write and Delete events.
And then revert the events order from the last one to the first one.
@param[in] print_event_info PRINT_EVENT_INFO
@param[in] rows_buff Packed event buff
*/
void Rows_log_event::change_to_flashback_event(PRINT_EVENT_INFO *print_event_info,
uchar *rows_buff, Log_event_type ev_type)
{
Table_map_log_event *map;
table_def *td;
DYNAMIC_ARRAY rows_arr;
uchar *swap_buff1, *swap_buff2;
uchar *rows_pos= rows_buff + m_rows_before_size;
if (!(map= print_event_info->m_table_map.get_table(m_table_id)) ||
!(td= map->create_table_def()))
return;
/* If the write rows event contained no values for the AI */
if (((get_general_type_code() == WRITE_ROWS_EVENT) && (m_rows_buf==m_rows_end)))
goto end;
(void) my_init_dynamic_array(&rows_arr, sizeof(LEX_STRING), 8, 8, MYF(0));
for (uchar *value= m_rows_buf; value < m_rows_end; )
{
uchar *start_pos= value;
size_t length1= 0;
if (!(length1= print_verbose_one_row(NULL, td, print_event_info,
&m_cols, value,
(const uchar*) "", TRUE)))
{
fprintf(stderr, "\nError row length: %zu\n", length1);
exit(1);
}
value+= length1;
swap_buff1= (uchar *) my_malloc(length1, MYF(0));
if (!swap_buff1)
{
fprintf(stderr, "\nError: Out of memory. "
"Could not exchange to flashback event.\n");
exit(1);
}
memcpy(swap_buff1, start_pos, length1);
// For Update_event, we have the second part
size_t length2= 0;
if (ev_type == UPDATE_ROWS_EVENT ||
ev_type == UPDATE_ROWS_EVENT_V1)
{
if (!(length2= print_verbose_one_row(NULL, td, print_event_info,
&m_cols, value,
(const uchar*) "", TRUE)))
{
fprintf(stderr, "\nError row length: %zu\n", length2);
exit(1);
}
value+= length2;
swap_buff2= (uchar *) my_malloc(length2, MYF(0));
if (!swap_buff2)
{
fprintf(stderr, "\nError: Out of memory. "
"Could not exchange to flashback event.\n");
exit(1);
}
memcpy(swap_buff2, start_pos + length1, length2); // WHERE part
}
if (ev_type == UPDATE_ROWS_EVENT ||
ev_type == UPDATE_ROWS_EVENT_V1)
{
/* Swap SET and WHERE part */
memcpy(start_pos, swap_buff2, length2);
memcpy(start_pos + length2, swap_buff1, length1);
}
/* Free tmp buffers */
my_free(swap_buff1);
if (ev_type == UPDATE_ROWS_EVENT ||
ev_type == UPDATE_ROWS_EVENT_V1)
my_free(swap_buff2);
/* Copying one row into a buff, and pushing into the array */
LEX_STRING one_row;
one_row.length= length1 + length2;
one_row.str= (char *) my_malloc(one_row.length, MYF(0));
memcpy(one_row.str, start_pos, one_row.length);
if (one_row.str == NULL || push_dynamic(&rows_arr, (uchar *) &one_row))
{
fprintf(stderr, "\nError: Out of memory. "
"Could not push flashback event into array.\n");
exit(1);
}
}
/* Copying rows from the end to the begining into event */
for (uint i= rows_arr.elements; i > 0; --i)
{
LEX_STRING *one_row= dynamic_element(&rows_arr, i - 1, LEX_STRING*);
memcpy(rows_pos, (uchar *)one_row->str, one_row->length);
rows_pos+= one_row->length;
my_free(one_row->str);
}
delete_dynamic(&rows_arr);
end:
delete td;
}
/**
Print a row event into IO cache in human readable form (in SQL format)
@ -3071,8 +3276,12 @@ void Rows_log_event::print_verbose(IO_CACHE *file,
Table_map_log_event *map;
table_def *td;
const char *sql_command, *sql_clause1, *sql_clause2;
const char *sql_command_short __attribute__((unused));
Log_event_type general_type_code= get_general_type_code();
#ifdef WHEN_FLASHBACK_REVIEW_READY
IO_CACHE *review_sql= &print_event_info->review_sql_cache;
#endif
if (m_extra_row_data)
{
uint8 extra_data_len= m_extra_row_data[EXTRA_ROW_INFO_LEN_OFFSET];
@ -3102,19 +3311,23 @@ void Rows_log_event::print_verbose(IO_CACHE *file,
sql_command= "INSERT INTO";
sql_clause1= "### SET\n";
sql_clause2= NULL;
sql_command_short= "I";
break;
case DELETE_ROWS_EVENT:
sql_command= "DELETE FROM";
sql_clause1= "### WHERE\n";
sql_clause2= NULL;
sql_command_short= "D";
break;
case UPDATE_ROWS_EVENT:
sql_command= "UPDATE";
sql_clause1= "### WHERE\n";
sql_clause2= "### SET\n";
sql_command_short= "U";
break;
default:
sql_command= sql_clause1= sql_clause2= NULL;
sql_command_short= "";
DBUG_ASSERT(0); /* Not possible */
}
@ -3140,6 +3353,13 @@ void Rows_log_event::print_verbose(IO_CACHE *file,
my_b_printf(file, "### %s %`s.%`s\n",
sql_command,
map->get_db_name(), map->get_table_name());
#ifdef WHEN_FLASHBACK_REVIEW_READY
if (need_flashback_review)
my_b_printf(review_sql, "\nINSERT INTO `%s`.`%s` VALUES ('%s'",
map->get_review_dbname(), map->get_review_tablename(), sql_command_short);
#endif
/* Print the first image */
if (!(length= print_verbose_one_row(file, td, print_event_info,
&m_cols, value,
@ -3156,6 +3376,17 @@ void Rows_log_event::print_verbose(IO_CACHE *file,
goto end;
value+= length;
}
#ifdef WHEN_FLASHBACK_REVIEW_READY
else
{
if (need_flashback_review)
for (size_t i= 0; i < td->size(); i ++)
my_b_printf(review_sql, ", NULL");
}
if (need_flashback_review)
my_b_printf(review_sql, ")%s\n", print_event_info->delimiter);
#endif
}
end:
@ -3171,7 +3402,7 @@ void Log_event::print_base64(IO_CACHE* file,
PRINT_EVENT_INFO* print_event_info,
bool more)
{
const uchar *ptr= (const uchar *)temp_buf;
uchar *ptr= (uchar *)temp_buf;
uint32 size= uint4korr(ptr + EVENT_LEN_OFFSET);
DBUG_ENTER("Log_event::print_base64");
@ -3183,6 +3414,51 @@ void Log_event::print_base64(IO_CACHE* file,
DBUG_VOID_RETURN;
}
if (is_flashback)
{
uint tmp_size= size;
Rows_log_event *ev= NULL;
Log_event_type ev_type = (enum Log_event_type) ptr[EVENT_TYPE_OFFSET];
if (checksum_alg != BINLOG_CHECKSUM_ALG_UNDEF &&
checksum_alg != BINLOG_CHECKSUM_ALG_OFF)
tmp_size-= BINLOG_CHECKSUM_LEN; // checksum is displayed through the header
switch (ev_type) {
case WRITE_ROWS_EVENT:
ptr[EVENT_TYPE_OFFSET]= DELETE_ROWS_EVENT;
ev= new Delete_rows_log_event((const char*) ptr, tmp_size,
glob_description_event);
ev->change_to_flashback_event(print_event_info, ptr, ev_type);
break;
case WRITE_ROWS_EVENT_V1:
ptr[EVENT_TYPE_OFFSET]= DELETE_ROWS_EVENT_V1;
ev= new Delete_rows_log_event((const char*) ptr, tmp_size,
glob_description_event);
ev->change_to_flashback_event(print_event_info, ptr, ev_type);
break;
case DELETE_ROWS_EVENT:
ptr[EVENT_TYPE_OFFSET]= WRITE_ROWS_EVENT;
ev= new Write_rows_log_event((const char*) ptr, tmp_size,
glob_description_event);
ev->change_to_flashback_event(print_event_info, ptr, ev_type);
break;
case DELETE_ROWS_EVENT_V1:
ptr[EVENT_TYPE_OFFSET]= WRITE_ROWS_EVENT_V1;
ev= new Write_rows_log_event((const char*) ptr, tmp_size,
glob_description_event);
ev->change_to_flashback_event(print_event_info, ptr, ev_type);
break;
case UPDATE_ROWS_EVENT:
case UPDATE_ROWS_EVENT_V1:
ev= new Update_rows_log_event((const char*) ptr, tmp_size,
glob_description_event);
ev->change_to_flashback_event(print_event_info, ptr, ev_type);
break;
default:
break;
}
delete ev;
}
if (my_base64_encode(ptr, (size_t) size, tmp_str))
{
DBUG_ASSERT(0);
@ -3198,8 +3474,12 @@ void Log_event::print_base64(IO_CACHE* file,
if (!more)
my_b_printf(file, "'%s\n", print_event_info->delimiter);
}
#ifdef WHEN_FLASHBACK_REVIEW_READY
if (print_event_info->verbose || need_flashback_review)
#else
if (print_event_info->verbose)
#endif
{
Rows_log_event *ev= NULL;
Log_event_type et= (Log_event_type) ptr[EVENT_TYPE_OFFSET];
@ -3207,7 +3487,7 @@ void Log_event::print_base64(IO_CACHE* file,
if (checksum_alg != BINLOG_CHECKSUM_ALG_UNDEF &&
checksum_alg != BINLOG_CHECKSUM_ALG_OFF)
size-= BINLOG_CHECKSUM_LEN; // checksum is displayed through the header
switch (et)
{
case TABLE_MAP_EVENT:
@ -3215,6 +3495,13 @@ void Log_event::print_base64(IO_CACHE* file,
Table_map_log_event *map;
map= new Table_map_log_event((const char*) ptr, size,
glob_description_event);
#ifdef WHEN_FLASHBACK_REVIEW_READY
if (need_flashback_review)
{
map->set_review_dbname(m_review_dbname.ptr());
map->set_review_tablename(m_review_tablename.ptr());
}
#endif
print_event_info->m_table_map.set_table(map->get_table_id(), map);
break;
}
@ -3263,14 +3550,27 @@ void Log_event::print_base64(IO_CACHE* file,
default:
break;
}
if (ev)
{
#ifdef WHEN_FLASHBACK_REVIEW_READY
ev->need_flashback_review= need_flashback_review;
if (print_event_info->verbose)
ev->print_verbose(file, print_event_info);
else
{
IO_CACHE tmp_cache;
open_cached_file(&tmp_cache, NULL, NULL, 0, MYF(MY_WME | MY_NABP));
ev->print_verbose(&tmp_cache, print_event_info);
close_cached_file(&tmp_cache);
}
#else
ev->print_verbose(file, print_event_info);
#endif
delete ev;
}
}
my_free(tmp_str);
DBUG_VOID_RETURN;
}
@ -4631,7 +4931,7 @@ void Query_log_event::print_query_header(IO_CACHE* file,
void Query_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
{
Write_on_release_cache cache(&print_event_info->head_cache, file);
Write_on_release_cache cache(&print_event_info->head_cache, file, 0, this);
/**
reduce the size of io cache so that the write function is called
@ -4640,8 +4940,24 @@ void Query_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
DBUG_EXECUTE_IF ("simulate_file_write_error",
{(&cache)->write_pos= (&cache)->write_end- 500;});
print_query_header(&cache, print_event_info);
my_b_write(&cache, (uchar*) query, q_len);
my_b_printf(&cache, "\n%s\n", print_event_info->delimiter);
if (!is_flashback)
{
my_b_write(&cache, (uchar*) query, q_len);
my_b_printf(&cache, "\n%s\n", print_event_info->delimiter);
}
else // is_flashback == 1
{
if (strcmp("BEGIN", query) == 0)
{
my_b_write(&cache, (uchar*) "COMMIT", 6);
my_b_printf(&cache, "\n%s\n", print_event_info->delimiter);
}
else if (strcmp("COMMIT", query) == 0)
{
my_b_write(&cache, (uchar*) "BEGIN", 5);
my_b_printf(&cache, "\n%s\n", print_event_info->delimiter);
}
}
}
#endif /* MYSQL_CLIENT */
@ -7351,11 +7667,11 @@ void
Gtid_log_event::print(FILE *file, PRINT_EVENT_INFO *print_event_info)
{
Write_on_release_cache cache(&print_event_info->head_cache, file,
Write_on_release_cache::FLUSH_F);
Write_on_release_cache::FLUSH_F, this);
char buf[21];
char buf2[21];
if (!print_event_info->short_form)
if (!print_event_info->short_form & !is_flashback)
{
print_header(&cache, print_event_info, FALSE);
longlong10_to_str(seq_no, buf, 10);
@ -7401,11 +7717,12 @@ Gtid_log_event::print(FILE *file, PRINT_EVENT_INFO *print_event_info)
print_event_info->server_id_printed= true;
}
my_b_printf(&cache, "/*!100001 SET @@session.gtid_seq_no=%s*/%s\n",
buf, print_event_info->delimiter);
if (!is_flashback)
my_b_printf(&cache, "/*!100001 SET @@session.gtid_seq_no=%s*/%s\n",
buf, print_event_info->delimiter);
}
if (!(flags2 & FL_STANDALONE))
my_b_printf(&cache, "BEGIN\n%s\n", print_event_info->delimiter);
my_b_printf(&cache, is_flashback ? "COMMIT\n%s\n" : "BEGIN\n%s\n", print_event_info->delimiter);
}
#endif /* MYSQL_SERVER */
@ -8047,7 +8364,7 @@ bool Xid_log_event::write()
void Xid_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
{
Write_on_release_cache cache(&print_event_info->head_cache, file,
Write_on_release_cache::FLUSH_F);
Write_on_release_cache::FLUSH_F, this);
if (!print_event_info->short_form)
{
@ -8057,7 +8374,7 @@ void Xid_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
print_header(&cache, print_event_info, FALSE);
my_b_printf(&cache, "\tXid = %s\n", buf);
}
my_b_printf(&cache, "COMMIT%s\n", print_event_info->delimiter);
my_b_printf(&cache, is_flashback ? "BEGIN%s\n" : "COMMIT%s\n", print_event_info->delimiter);
}
#endif /* MYSQL_CLIENT */
@ -8706,7 +9023,7 @@ void Unknown_log_event::print(FILE* file_arg, PRINT_EVENT_INFO* print_event_info
void Stop_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
{
Write_on_release_cache cache(&print_event_info->head_cache, file,
Write_on_release_cache::FLUSH_F);
Write_on_release_cache::FLUSH_F, this);
if (print_event_info->short_form)
return;
@ -10042,6 +10359,7 @@ Rows_log_event::Rows_log_event(const char *buf, uint event_len,
m_rows_end= m_rows_buf + data_size;
m_rows_cur= m_rows_end;
memcpy(m_rows_buf, ptr_rows_data, data_size);
m_rows_before_size= ptr_rows_data - (const uchar *) buf; // Get the size that before SET part
}
else
m_cols.bitmap= 0; // to not free it
@ -10958,6 +11276,10 @@ void Rows_log_event::print_helper(FILE *file,
{
IO_CACHE *const head= &print_event_info->head_cache;
IO_CACHE *const body= &print_event_info->body_cache;
#ifdef WHEN_FLASHBACK_REVIEW_READY
IO_CACHE *const sql= &print_event_info->review_sql_cache;
#endif
if (!print_event_info->short_form)
{
bool const last_stmt_event= get_flags(STMT_END_F);
@ -10970,8 +11292,19 @@ void Rows_log_event::print_helper(FILE *file,
if (get_flags(STMT_END_F))
{
copy_event_cache_to_file_and_reinit(head, file);
copy_event_cache_to_file_and_reinit(body, file);
reinit_io_cache(head, READ_CACHE, 0L, FALSE, FALSE);
output_buf.append(head, head->end_of_file);
reinit_io_cache(head, WRITE_CACHE, 0, FALSE, TRUE);
reinit_io_cache(body, READ_CACHE, 0L, FALSE, FALSE);
output_buf.append(body, body->end_of_file);
reinit_io_cache(body, WRITE_CACHE, 0, FALSE, TRUE);
#ifdef WHEN_FLASHBACK_REVIEW_READY
reinit_io_cache(sql, READ_CACHE, 0L, FALSE, FALSE);
output_buf.append(sql, sql->end_of_file);
reinit_io_cache(sql, WRITE_CACHE, 0, FALSE, TRUE);
#endif
}
}
#endif
@ -12374,7 +12707,7 @@ void Write_rows_log_event::print(FILE *file, PRINT_EVENT_INFO* print_event_info)
{
DBUG_EXECUTE_IF("simulate_cache_read_error",
{DBUG_SET("+d,simulate_my_b_fill_error");});
Rows_log_event::print_helper(file, print_event_info, "Write_rows");
Rows_log_event::print_helper(file, print_event_info, is_flashback ? "Delete_rows" : "Write_rows");
}
void Write_rows_compressed_log_event::print(FILE *file,
@ -13048,7 +13381,7 @@ int Delete_rows_log_event::do_exec_row(rpl_group_info *rgi)
void Delete_rows_log_event::print(FILE *file,
PRINT_EVENT_INFO* print_event_info)
{
Rows_log_event::print_helper(file, print_event_info, "Delete_rows");
Rows_log_event::print_helper(file, print_event_info, is_flashback ? "Write_rows" : "Delete_rows");
}
void Delete_rows_compressed_log_event::print(FILE *file,
@ -13600,6 +13933,9 @@ st_print_event_info::st_print_event_info()
myf const flags = MYF(MY_WME | MY_NABP);
open_cached_file(&head_cache, NULL, NULL, 0, flags);
open_cached_file(&body_cache, NULL, NULL, 0, flags);
#ifdef WHEN_FLASHBACK_REVIEW_READY
open_cached_file(&review_sql_cache, NULL, NULL, 0, flags);
#endif
}
#endif

76
sql/log_event.h
View File

@ -41,6 +41,7 @@
#include "rpl_utility.h"
#include "hash.h"
#include "rpl_tblmap.h"
#include "sql_string.h"
#endif
#ifdef MYSQL_SERVER
@ -52,7 +53,9 @@
#include "rpl_gtid.h"
/* Forward declarations */
#ifndef MYSQL_CLIENT
class String;
#endif
#define PREFIX_SQL_LOAD "SQL_LOAD-"
#define LONG_FIND_ROW_THRESHOLD 60 /* seconds */
@ -845,9 +848,16 @@ typedef struct st_print_event_info
~st_print_event_info() {
close_cached_file(&head_cache);
close_cached_file(&body_cache);
#ifdef WHEN_FLASHBACK_REVIEW_READY
close_cached_file(&review_sql_cache);
#endif
}
bool init_ok() /* tells if construction was successful */
{ return my_b_inited(&head_cache) && my_b_inited(&body_cache); }
{ return my_b_inited(&head_cache) && my_b_inited(&body_cache)
#ifdef WHEN_FLASHBACK_REVIEW_READY
&& my_b_inited(&review_sql_cache)
#endif
; }
/* Settings on how to print the events */
@ -875,6 +885,10 @@ typedef struct st_print_event_info
*/
IO_CACHE head_cache;
IO_CACHE body_cache;
#ifdef WHEN_FLASHBACK_REVIEW_READY
/* Storing the SQL for reviewing */
IO_CACHE review_sql_cache;
#endif
} PRINT_EVENT_INFO;
#endif
@ -1223,6 +1237,37 @@ public:
void print_base64(IO_CACHE* file, PRINT_EVENT_INFO* print_event_info,
bool is_more);
#endif
/* The following code used for Flashback */
#ifdef MYSQL_CLIENT
my_bool is_flashback;
my_bool need_flashback_review;
String output_buf; // Storing the event output
#ifdef WHEN_FLASHBACK_REVIEW_READY
String m_review_dbname;
String m_review_tablename;
void set_review_dbname(const char *name)
{
if (name)
{
m_review_dbname.free();
m_review_dbname.append(name);
}
}
void set_review_tablename(const char *name)
{
if (name)
{
m_review_tablename.free();
m_review_tablename.append(name);
}
}
const char *get_review_dbname() const { return m_review_dbname.ptr(); }
const char *get_review_tablename() const { return m_review_tablename.ptr(); }
#endif
#endif
/*
read_log_event() functions read an event from a binlog or relay
log; used by SHOW BINLOG EVENTS, the binlog_dump thread on the
@ -4362,12 +4407,14 @@ public:
#ifdef MYSQL_CLIENT
/* not for direct call, each derived has its own ::print() */
virtual void print(FILE *file, PRINT_EVENT_INFO *print_event_info)= 0;
void change_to_flashback_event(PRINT_EVENT_INFO *print_event_info, uchar *rows_buff, Log_event_type ev_type);
void print_verbose(IO_CACHE *file,
PRINT_EVENT_INFO *print_event_info);
size_t print_verbose_one_row(IO_CACHE *file, table_def *td,
PRINT_EVENT_INFO *print_event_info,
MY_BITMAP *cols_bitmap,
const uchar *ptr, const uchar *prefix);
const uchar *ptr, const uchar *prefix,
const my_bool no_fill_output= 0); // if no_fill_output=1, then print result is unnecessary
#endif
#ifdef MYSQL_SERVER
@ -4506,6 +4553,8 @@ protected:
uchar *m_rows_cur; /* One-after the end of the data */
uchar *m_rows_end; /* One-after the end of the allocated space */
size_t m_rows_before_size; /* The length before m_rows_buf */
flag_set m_flags; /* Flags for row-level events */
Log_event_type m_type; /* Actual event type */
@ -5040,6 +5089,29 @@ public:
};
static inline bool copy_event_cache_to_string_and_reinit(IO_CACHE *cache, LEX_STRING *to)
{
String tmp;
reinit_io_cache(cache, READ_CACHE, 0L, FALSE, FALSE);
if (tmp.append(cache, cache->end_of_file))
goto err;
reinit_io_cache(cache, WRITE_CACHE, 0, FALSE, TRUE);
/*
Can't change the order, because the String::release() will clear the
length.
*/
to->length= tmp.length();
to->str= tmp.release();
return false;
err:
perror("Out of memory: can't allocate memory in copy_event_cache_to_string_and_reinit().");
return true;
}
static inline bool copy_event_cache_to_file_and_reinit(IO_CACHE *cache,
FILE *file)
{

18
sql/mysqld.cc
View File

@ -393,7 +393,7 @@ bool opt_bin_log_compress;
uint opt_bin_log_compress_min_len;
my_bool opt_log, debug_assert_if_crashed_table= 0, opt_help= 0;
my_bool debug_assert_on_not_freed_memory= 0;
my_bool disable_log_notes;
my_bool disable_log_notes, opt_support_flashback= 0;
static my_bool opt_abort;
ulonglong log_output_options;
my_bool opt_userstat_running;
@ -7413,6 +7413,10 @@ struct my_option my_long_options[]=
0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
/* We must always support the next option to make scripts like mysqltest
easier to do */
{"flashback", 0,
"Setup the server to use flashback. This enables binary log in row mode and will enable extra logging for DDL's needed by flashback feature",
&opt_support_flashback, &opt_support_flashback,
0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
{"gdb", 0,
"Set up signals usable for debugging. Deprecated, use --debug-gdb instead.",
&opt_debugging, &opt_debugging,
@ -9587,6 +9591,18 @@ static int get_options(int *argc_ptr, char ***argv_ptr)
else
global_system_variables.option_bits&= ~OPTION_BIG_SELECTS;
if (opt_support_flashback)
{
/* Force binary logging */
if (!opt_bin_logname)
opt_bin_logname= (char*) ""; // Use default name
opt_bin_log= opt_bin_log_used= 1;
/* Force format to row */
binlog_format_used= 1;
global_system_variables.binlog_format= BINLOG_FORMAT_ROW;
}
if (!opt_bootstrap && WSREP_PROVIDER_EXISTS &&
global_system_variables.binlog_format != BINLOG_FORMAT_ROW)
{

1
sql/mysqld.h
View File

@ -114,6 +114,7 @@ extern uint opt_bin_log_compress_min_len;
extern my_bool opt_log, opt_bootstrap;
extern my_bool opt_backup_history_log;
extern my_bool opt_backup_progress_log;
extern my_bool opt_support_flashback;
extern ulonglong log_output_options;
extern ulong log_backup_output_options;
extern my_bool opt_log_queries_not_using_indexes;

7
sql/sys_vars.cc
View File

@ -449,16 +449,17 @@ static bool binlog_format_check(sys_var *self, THD *thd, set_var *var)
/*
MariaDB Galera does not support STATEMENT or MIXED binlog format currently.
*/
if (WSREP(thd) && var->save_result.ulonglong_value != BINLOG_FORMAT_ROW)
if ((WSREP(thd) || opt_support_flashback) &&
var->save_result.ulonglong_value != BINLOG_FORMAT_ROW)
{
// Push a warning to the error log.
push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN, ER_UNKNOWN_ERROR,
"MariaDB Galera does not support binlog format: %s",
"MariaDB Galera and flashback does not support binlog format: %s",
binlog_format_names[var->save_result.ulonglong_value]);
if (var->type == OPT_GLOBAL)
{
WSREP_ERROR("MariaDB Galera does not support binlog format: %s",
WSREP_ERROR("MariaDB Galera and flashback does not support binlog format: %s",
binlog_format_names[var->save_result.ulonglong_value]);
return true;
}

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