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Merge MWL#234: @@skip_replication, into latest MariaDB 5.5 for push

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unknown 2012-03-02 07:45:06 +01:00
commit 5d6989ea71
23 changed files with 1171 additions and 134 deletions
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2
VERSION
View File

@ -1,4 +1,4 @@
MYSQL_VERSION_MAJOR=5
MYSQL_VERSION_MINOR=5
MYSQL_VERSION_PATCH=20
MYSQL_VERSION_PATCH=21
MYSQL_VERSION_EXTRA=

33
client/mysqlbinlog.cc
View File

@ -750,6 +750,31 @@ print_use_stmt(PRINT_EVENT_INFO* pinfo, const Query_log_event *ev)
}
/**
Print "SET skip_replication=..." statement when needed.
Not all servers support this (only MariaDB from some version on). So we
mark the SET to only execute from the version of MariaDB that supports it,
and also only output it if we actually see events with the flag set, to not
get spurious errors on MySQL@Oracle servers of higher version that do not
support the flag.
So we start out assuming @@skip_replication is 0, and only output a SET
statement when it changes.
*/
static void
print_skip_replication_statement(PRINT_EVENT_INFO *pinfo, const Log_event *ev)
{
int cur_val;
cur_val= (ev->flags & LOG_EVENT_SKIP_REPLICATION_F) != 0;
if (cur_val == pinfo->skip_replication)
return; /* Not changed. */
fprintf(result_file, "/*!50521 SET skip_replication=%d*/%s\n",
cur_val, pinfo->delimiter);
pinfo->skip_replication= cur_val;
}
/**
Prints the given event in base64 format.
@ -893,7 +918,10 @@ Exit_status process_event(PRINT_EVENT_INFO *print_event_info, Log_event *ev,
goto end;
}
else
{
print_skip_replication_statement(print_event_info, ev);
ev->print(result_file, print_event_info);
}
break;
}
@ -923,7 +951,10 @@ Exit_status process_event(PRINT_EVENT_INFO *print_event_info, Log_event *ev,
goto end;
}
else
{
print_skip_replication_statement(print_event_info, ev);
ce->print(result_file, print_event_info, TRUE);
}
// If this binlog is not 3.23 ; why this test??
if (glob_description_event->binlog_version >= 3)
@ -1027,6 +1058,7 @@ Exit_status process_event(PRINT_EVENT_INFO *print_event_info, Log_event *ev,
if (fname)
{
convert_path_to_forward_slashes(fname);
print_skip_replication_statement(print_event_info, ev);
exlq->print(result_file, print_event_info, fname);
}
else
@ -1156,6 +1188,7 @@ Exit_status process_event(PRINT_EVENT_INFO *print_event_info, Log_event *ev,
/* FALL THROUGH */
}
default:
print_skip_replication_statement(print_event_info, ev);
ev->print(result_file, print_event_info);
}
}

9
mysql-test/r/mysqld--help-win.result.THIS
View File

@ -620,6 +620,14 @@ The following options may be given as the first argument:
directive multiple times, once for each table. This will
work for cross-database updates, in contrast to
replicate-do-db.
--replicate-events-marked-for-skip=name
Whether the slave should replicate events that were
created with @@skip_replication=1 on the master. Default
REPLICATE (no events are skipped). Other values are
FILTER_ON_SLAVE (events will be sent by the master but
ignored by the slave) and FILTER_ON_MASTER (events marked
with @@skip_replication=1 will be filtered on the master
and never be sent to the slave).
--replicate-ignore-db=name
Tells the slave thread to not replicate to the specified
database. To specify more than one database to ignore,
@ -1029,6 +1037,7 @@ relay-log-purge TRUE
relay-log-recovery FALSE
relay-log-space-limit 0
replicate-annotate-row-events FALSE
replicate-events-marked-for-skip replicate
replicate-same-server-id FALSE
report-host (No default value)
report-password (No default value)

9
mysql-test/r/mysqld--help.result
View File

@ -620,6 +620,14 @@ The following options may be given as the first argument:
directive multiple times, once for each table. This will
work for cross-database updates, in contrast to
replicate-do-db.
--replicate-events-marked-for-skip=name
Whether the slave should replicate events that were
created with @@skip_replication=1 on the master. Default
REPLICATE (no events are skipped). Other values are
FILTER_ON_SLAVE (events will be sent by the master but
ignored by the slave) and FILTER_ON_MASTER (events marked
with @@skip_replication=1 will be filtered on the master
and never be sent to the slave).
--replicate-ignore-db=name
Tells the slave thread to not replicate to the specified
database. To specify more than one database to ignore,
@ -1021,6 +1029,7 @@ relay-log-purge TRUE
relay-log-recovery FALSE
relay-log-space-limit 0
replicate-annotate-row-events FALSE
replicate-events-marked-for-skip replicate
replicate-same-server-id FALSE
report-host (No default value)
report-password (No default value)

252
mysql-test/suite/rpl/r/rpl_skip_replication.result Normal file
View File

@ -0,0 +1,252 @@
include/master-slave.inc
[connection master]
CREATE USER 'nonsuperuser'@'127.0.0.1';
GRANT ALTER,CREATE,DELETE,DROP,EVENT,INSERT,PROCESS,REPLICATION SLAVE,
SELECT,UPDATE ON *.* TO 'nonsuperuser'@'127.0.0.1';
SET GLOBAL replicate_events_marked_for_skip=FILTER_ON_MASTER;
ERROR 42000: Access denied; you need (at least one of) the SUPER privilege(s) for this operation
DROP USER'nonsuperuser'@'127.0.0.1';
SELECT @@global.replicate_events_marked_for_skip;
@@global.replicate_events_marked_for_skip
replicate
SET GLOBAL replicate_events_marked_for_skip=FILTER_ON_SLAVE;
ERROR HY000: This operation cannot be performed with a running slave; run STOP SLAVE first
SELECT @@global.replicate_events_marked_for_skip;
@@global.replicate_events_marked_for_skip
replicate
STOP SLAVE;
SET SESSION replicate_events_marked_for_skip=FILTER_ON_MASTER;
ERROR HY000: Variable 'replicate_events_marked_for_skip' is a GLOBAL variable and should be set with SET GLOBAL
SELECT @@global.replicate_events_marked_for_skip;
@@global.replicate_events_marked_for_skip
replicate
SET GLOBAL replicate_events_marked_for_skip=FILTER_ON_MASTER;
SELECT @@global.replicate_events_marked_for_skip;
@@global.replicate_events_marked_for_skip
filter_on_master
START SLAVE;
SELECT @@skip_replication;
@@skip_replication
0
SET GLOBAL skip_replication=1;
ERROR HY000: Variable 'skip_replication' is a SESSION variable and can't be used with SET GLOBAL
SELECT @@skip_replication;
@@skip_replication
0
CREATE TABLE t1 (a INT PRIMARY KEY, b INT) ENGINE=myisam;
CREATE TABLE t2 (a INT PRIMARY KEY, b INT) ENGINE=innodb;
INSERT INTO t1(a) VALUES (1);
INSERT INTO t2(a) VALUES (1);
SET skip_replication=1;
CREATE TABLE t3 (a INT PRIMARY KEY, b INT) ENGINE=myisam;
INSERT INTO t1(a) VALUES (2);
INSERT INTO t2(a) VALUES (2);
FLUSH NO_WRITE_TO_BINLOG LOGS;
SHOW TABLES;
Tables_in_test
t1
t2
SELECT * FROM t1;
a b
1 NULL
SELECT * FROM t2;
a b
1 NULL
DROP TABLE t3;
FLUSH NO_WRITE_TO_BINLOG LOGS;
STOP SLAVE;
SET GLOBAL replicate_events_marked_for_skip=FILTER_ON_SLAVE;
START SLAVE;
SET skip_replication=1;
CREATE TABLE t3 (a INT PRIMARY KEY, b INT) ENGINE=myisam;
INSERT INTO t1(a) VALUES (3);
INSERT INTO t2(a) VALUES (3);
FLUSH NO_WRITE_TO_BINLOG LOGS;
SHOW TABLES;
Tables_in_test
t1
t2
SELECT * FROM t1;
a b
1 NULL
SELECT * FROM t2;
a b
1 NULL
DROP TABLE t3;
FLUSH NO_WRITE_TO_BINLOG LOGS;
STOP SLAVE;
SET GLOBAL replicate_events_marked_for_skip=REPLICATE;
START SLAVE;
SET skip_replication=1;
CREATE TABLE t3 (a INT PRIMARY KEY, b INT) ENGINE=myisam;
INSERT INTO t3(a) VALUES(2);
SELECT * FROM t3;
a b
2 NULL
DROP TABLE t3;
TRUNCATE t1;
RESET MASTER;
SET skip_replication=0;
INSERT INTO t1 VALUES (1,0);
SET skip_replication=1;
INSERT INTO t1 VALUES (2,0);
SET skip_replication=0;
INSERT INTO t1 VALUES (3,0);
SELECT * FROM t1 ORDER by a;
a b
1 0
2 0
3 0
STOP SLAVE;
SET GLOBAL replicate_events_marked_for_skip=FILTER_ON_MASTER;
TRUNCATE t1;
SELECT * FROM t1 ORDER by a;
a b
1 0
2 0
3 0
START SLAVE;
SELECT * FROM t1 ORDER by a;
a b
1 0
3 0
TRUNCATE t1;
STOP SLAVE;
SET GLOBAL sql_slave_skip_counter=6;
SET GLOBAL replicate_events_marked_for_skip=FILTER_ON_SLAVE;
START SLAVE;
SET @old_binlog_format= @@binlog_format;
SET binlog_format= statement;
SET skip_replication=0;
INSERT INTO t1 VALUES (1,5);
SET skip_replication=1;
INSERT INTO t1 VALUES (2,5);
SET skip_replication=0;
INSERT INTO t1 VALUES (3,5);
INSERT INTO t1 VALUES (4,5);
SET binlog_format= @old_binlog_format;
SELECT * FROM t1;
a b
4 5
include/stop_slave.inc
SET @old_slave_binlog_format= @@global.binlog_format;
SET GLOBAL binlog_format= row;
include/start_slave.inc
TRUNCATE t1;
SET @old_binlog_format= @@binlog_format;
SET binlog_format= row;
BINLOG 'wlZOTw8BAAAA8QAAAPUAAAAAAAQANS41LjIxLU1hcmlhREItZGVidWctbG9nAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAEzgNAAgAEgAEBAQEEgAA2QAEGggAAAAICAgCAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAA371saA==';
BINLOG 'wlZOTxMBAAAAKgAAAGMBAAAAgCkAAAAAAAEABHRlc3QAAnQxAAIDAwAC
wlZOTxcBAAAAJgAAAIkBAAAAgCkAAAAAAAEAAv/8AQAAAAgAAAA=';
BINLOG 'wlZOTxMBAAAAKgAAADwCAAAAACkAAAAAAAEABHRlc3QAAnQxAAIDAwAC
wlZOTxcBAAAAJgAAAGICAAAAACkAAAAAAAEAAv/8AgAAAAgAAAA=';
SET binlog_format= @old_binlog_format;
SELECT * FROM t1 ORDER BY a;
a b
1 8
2 8
SELECT * FROM t1 ORDER by a;
a b
2 8
include/stop_slave.inc
SET GLOBAL binlog_format= @old_slave_binlog_format;
include/start_slave.inc
SET skip_replication=0;
BEGIN;
SET skip_replication=0;
ERROR HY000: Cannot modify @@session.skip_replication inside a transaction
SET skip_replication=1;
ERROR HY000: Cannot modify @@session.skip_replication inside a transaction
ROLLBACK;
SET skip_replication=1;
BEGIN;
SET skip_replication=0;
ERROR HY000: Cannot modify @@session.skip_replication inside a transaction
SET skip_replication=1;
ERROR HY000: Cannot modify @@session.skip_replication inside a transaction
COMMIT;
SET autocommit=0;
INSERT INTO t2(a) VALUES(100);
SET skip_replication=1;
ERROR HY000: Cannot modify @@session.skip_replication inside a transaction
ROLLBACK;
SET autocommit=1;
SET skip_replication=1;
CREATE FUNCTION foo (x INT) RETURNS INT BEGIN SET SESSION skip_replication=x; RETURN x; END|
CREATE PROCEDURE bar(x INT) BEGIN SET SESSION skip_replication=x; END|
CREATE FUNCTION baz (x INT) RETURNS INT BEGIN CALL bar(x); RETURN x; END|
SELECT foo(0);
ERROR HY000: Cannot modify @@session.skip_replication inside a stored function or trigger
SELECT baz(0);
ERROR HY000: Cannot modify @@session.skip_replication inside a stored function or trigger
SET @a= foo(1);
ERROR HY000: Cannot modify @@session.skip_replication inside a stored function or trigger
SET @a= baz(1);
ERROR HY000: Cannot modify @@session.skip_replication inside a stored function or trigger
UPDATE t2 SET b=foo(0);
ERROR HY000: Cannot modify @@session.skip_replication inside a stored function or trigger
UPDATE t2 SET b=baz(0);
ERROR HY000: Cannot modify @@session.skip_replication inside a stored function or trigger
INSERT INTO t1 VALUES (101, foo(1));
ERROR HY000: Cannot modify @@session.skip_replication inside a stored function or trigger
INSERT INTO t1 VALUES (101, baz(0));
ERROR HY000: Cannot modify @@session.skip_replication inside a stored function or trigger
SELECT @@skip_replication;
@@skip_replication
1
CALL bar(0);
SELECT @@skip_replication;
@@skip_replication
0
CALL bar(1);
SELECT @@skip_replication;
@@skip_replication
1
DROP FUNCTION foo;
DROP PROCEDURE bar;
DROP FUNCTION baz;
SET skip_replication= 0;
TRUNCATE t1;
STOP SLAVE;
SET GLOBAL replicate_events_marked_for_skip=FILTER_ON_MASTER;
START SLAVE IO_THREAD;
SET skip_replication= 1;
INSERT INTO t1(a) VALUES (1);
SET skip_replication= 0;
INSERT INTO t1(a) VALUES (2);
include/save_master_pos.inc
include/sync_io_with_master.inc
STOP SLAVE IO_THREAD;
SET GLOBAL replicate_events_marked_for_skip=REPLICATE;
START SLAVE;
SELECT * FROM t1;
a b
2 NULL
SET skip_replication= 0;
TRUNCATE t1;
STOP SLAVE;
SET GLOBAL replicate_events_marked_for_skip=FILTER_ON_SLAVE;
START SLAVE IO_THREAD;
SET skip_replication= 1;
INSERT INTO t1(a) VALUES (1);
SET skip_replication= 0;
INSERT INTO t1(a) VALUES (2);
include/save_master_pos.inc
include/sync_io_with_master.inc
STOP SLAVE IO_THREAD;
SET GLOBAL replicate_events_marked_for_skip=REPLICATE;
START SLAVE;
SELECT * FROM t1 ORDER BY a;
a b
1 NULL
2 NULL
SET skip_replication=0;
DROP TABLE t1,t2;
STOP SLAVE;
SET GLOBAL replicate_events_marked_for_skip=REPLICATE;
START SLAVE;
include/rpl_end.inc

377
mysql-test/suite/rpl/t/rpl_skip_replication.test Normal file
View File

@ -0,0 +1,377 @@
--source include/master-slave.inc
--source include/have_innodb.inc
connection slave;
# Test that SUPER is required to change @@replicate_events_marked_for_skip.
CREATE USER 'nonsuperuser'@'127.0.0.1';
GRANT ALTER,CREATE,DELETE,DROP,EVENT,INSERT,PROCESS,REPLICATION SLAVE,
SELECT,UPDATE ON *.* TO 'nonsuperuser'@'127.0.0.1';
connect(nonpriv, 127.0.0.1, nonsuperuser,, test, $SLAVE_MYPORT,);
connection nonpriv;
--error ER_SPECIFIC_ACCESS_DENIED_ERROR
SET GLOBAL replicate_events_marked_for_skip=FILTER_ON_MASTER;
disconnect nonpriv;
connection slave;
DROP USER'nonsuperuser'@'127.0.0.1';
SELECT @@global.replicate_events_marked_for_skip;
--error ER_SLAVE_MUST_STOP
SET GLOBAL replicate_events_marked_for_skip=FILTER_ON_SLAVE;
SELECT @@global.replicate_events_marked_for_skip;
STOP SLAVE;
--error ER_GLOBAL_VARIABLE
SET SESSION replicate_events_marked_for_skip=FILTER_ON_MASTER;
SELECT @@global.replicate_events_marked_for_skip;
SET GLOBAL replicate_events_marked_for_skip=FILTER_ON_MASTER;
SELECT @@global.replicate_events_marked_for_skip;
START SLAVE;
connection master;
SELECT @@skip_replication;
--error ER_LOCAL_VARIABLE
SET GLOBAL skip_replication=1;
SELECT @@skip_replication;
CREATE TABLE t1 (a INT PRIMARY KEY, b INT) ENGINE=myisam;
CREATE TABLE t2 (a INT PRIMARY KEY, b INT) ENGINE=innodb;
INSERT INTO t1(a) VALUES (1);
INSERT INTO t2(a) VALUES (1);
# Test that master-side filtering works.
SET skip_replication=1;
CREATE TABLE t3 (a INT PRIMARY KEY, b INT) ENGINE=myisam;
INSERT INTO t1(a) VALUES (2);
INSERT INTO t2(a) VALUES (2);
# Inject a rotate event in the binlog stream sent to slave (otherwise we will
# fail sync_slave_with_master as the last event on the master is not present
# on the slave).
FLUSH NO_WRITE_TO_BINLOG LOGS;
sync_slave_with_master;
connection slave;
SHOW TABLES;
SELECT * FROM t1;
SELECT * FROM t2;
connection master;
DROP TABLE t3;
FLUSH NO_WRITE_TO_BINLOG LOGS;
sync_slave_with_master;
# Test that slave-side filtering works.
connection slave;
STOP SLAVE;
SET GLOBAL replicate_events_marked_for_skip=FILTER_ON_SLAVE;
START SLAVE;
connection master;
SET skip_replication=1;
CREATE TABLE t3 (a INT PRIMARY KEY, b INT) ENGINE=myisam;
INSERT INTO t1(a) VALUES (3);
INSERT INTO t2(a) VALUES (3);
# Inject a rotate event in the binlog stream sent to slave (otherwise we will
# fail sync_slave_with_master as the last event on the master is not present
# on the slave).
FLUSH NO_WRITE_TO_BINLOG LOGS;
sync_slave_with_master;
connection slave;
SHOW TABLES;
SELECT * FROM t1;
SELECT * FROM t2;
connection master;
DROP TABLE t3;
FLUSH NO_WRITE_TO_BINLOG LOGS;
sync_slave_with_master;
connection slave;
STOP SLAVE;
SET GLOBAL replicate_events_marked_for_skip=REPLICATE;
START SLAVE;
# Test that events with @@skip_replication=1 are not filtered when filtering is
# not set on slave.
connection master;
SET skip_replication=1;
CREATE TABLE t3 (a INT PRIMARY KEY, b INT) ENGINE=myisam;
INSERT INTO t3(a) VALUES(2);
sync_slave_with_master;
connection slave;
SELECT * FROM t3;
connection master;
DROP TABLE t3;
#
# Test that the slave will preserve the @@skip_replication flag in its
# own binlog.
#
TRUNCATE t1;
sync_slave_with_master;
connection slave;
RESET MASTER;
connection master;
SET skip_replication=0;
INSERT INTO t1 VALUES (1,0);
SET skip_replication=1;
INSERT INTO t1 VALUES (2,0);
SET skip_replication=0;
INSERT INTO t1 VALUES (3,0);
sync_slave_with_master;
connection slave;
# Since slave has @@replicate_events_marked_for_skip=REPLICATE, it should have
# applied all events.
SELECT * FROM t1 ORDER by a;
STOP SLAVE;
SET GLOBAL replicate_events_marked_for_skip=FILTER_ON_MASTER;
let $SLAVE_DATADIR= `select @@datadir`;
connection master;
TRUNCATE t1;
# Now apply the slave binlog to the master, to check that both the slave
# and mysqlbinlog will preserve the @@skip_replication flag.
--exec $MYSQL_BINLOG $SLAVE_DATADIR/slave-bin.000001 > $MYSQLTEST_VARDIR/tmp/rpl_skip_replication.binlog
--exec $MYSQL test < $MYSQLTEST_VARDIR/tmp/rpl_skip_replication.binlog
# The master should have all three events.
SELECT * FROM t1 ORDER by a;
# The slave should be missing event 2, which is marked with the
# @@skip_replication flag.
connection slave;
START SLAVE;
connection master;
sync_slave_with_master;
connection slave;
SELECT * FROM t1 ORDER by a;
#
# Test that @@sql_slave_skip_counter does not count skipped @@skip_replication
# events.
#
connection master;
TRUNCATE t1;
sync_slave_with_master;
connection slave;
STOP SLAVE;
# We will skip two INSERTs (in addition to any skipped due to
# @@skip_replication). Since from 5.5 every statement is wrapped in
# BEGIN ... END, we need to skip 6 events for this.
SET GLOBAL sql_slave_skip_counter=6;
SET GLOBAL replicate_events_marked_for_skip=FILTER_ON_SLAVE;
START SLAVE;
connection master;
# Need to fix @@binlog_format to get consistent event count.
SET @old_binlog_format= @@binlog_format;
SET binlog_format= statement;
SET skip_replication=0;
INSERT INTO t1 VALUES (1,5);
SET skip_replication=1;
INSERT INTO t1 VALUES (2,5);
SET skip_replication=0;
INSERT INTO t1 VALUES (3,5);
INSERT INTO t1 VALUES (4,5);
SET binlog_format= @old_binlog_format;
sync_slave_with_master;
connection slave;
# The slave should have skipped the first three inserts (number 1 and 3 due
# to @@sql_slave_skip_counter=2, number 2 due to
# @@replicate_events_marked_for_skip=FILTER_ON_SLAVE). So only number 4
# should be left.
SELECT * FROM t1;
#
# Check that BINLOG statement preserves the @@skip_replication flag.
#
connection slave;
# Need row @@binlog_format for BINLOG statements containing row events.
--source include/stop_slave.inc
SET @old_slave_binlog_format= @@global.binlog_format;
SET GLOBAL binlog_format= row;
--source include/start_slave.inc
connection master;
TRUNCATE t1;
SET @old_binlog_format= @@binlog_format;
SET binlog_format= row;
# Format description log event.
BINLOG 'wlZOTw8BAAAA8QAAAPUAAAAAAAQANS41LjIxLU1hcmlhREItZGVidWctbG9nAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAEzgNAAgAEgAEBAQEEgAA2QAEGggAAAAICAgCAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAA371saA==';
# INSERT INTO t1 VALUES (1,8) # with @@skip_replication=1
BINLOG 'wlZOTxMBAAAAKgAAAGMBAAAAgCkAAAAAAAEABHRlc3QAAnQxAAIDAwAC
wlZOTxcBAAAAJgAAAIkBAAAAgCkAAAAAAAEAAv/8AQAAAAgAAAA=';
# INSERT INTO t1 VALUES (2,8) # with @@skip_replication=0
BINLOG 'wlZOTxMBAAAAKgAAADwCAAAAACkAAAAAAAEABHRlc3QAAnQxAAIDAwAC
wlZOTxcBAAAAJgAAAGICAAAAACkAAAAAAAEAAv/8AgAAAAgAAAA=';
SET binlog_format= @old_binlog_format;
SELECT * FROM t1 ORDER BY a;
sync_slave_with_master;
connection slave;
# Slave should have only the second insert, the first should be ignored due to
# the @@skip_replication flag.
SELECT * FROM t1 ORDER by a;
--source include/stop_slave.inc
SET GLOBAL binlog_format= @old_slave_binlog_format;
--source include/start_slave.inc
# Test that it is not possible to change @@skip_replication inside a
# transaction or statement, thereby replicating only parts of statements
# or transactions.
connection master;
SET skip_replication=0;
BEGIN;
--error ER_INSIDE_TRANSACTION_PREVENTS_SWITCH_SKIP_REPLICATION
SET skip_replication=0;
--error ER_INSIDE_TRANSACTION_PREVENTS_SWITCH_SKIP_REPLICATION
SET skip_replication=1;
ROLLBACK;
SET skip_replication=1;
BEGIN;
--error ER_INSIDE_TRANSACTION_PREVENTS_SWITCH_SKIP_REPLICATION
SET skip_replication=0;
--error ER_INSIDE_TRANSACTION_PREVENTS_SWITCH_SKIP_REPLICATION
SET skip_replication=1;
COMMIT;
SET autocommit=0;
INSERT INTO t2(a) VALUES(100);
--error ER_INSIDE_TRANSACTION_PREVENTS_SWITCH_SKIP_REPLICATION
SET skip_replication=1;
ROLLBACK;
SET autocommit=1;
SET skip_replication=1;
--delimiter |
CREATE FUNCTION foo (x INT) RETURNS INT BEGIN SET SESSION skip_replication=x; RETURN x; END|
CREATE PROCEDURE bar(x INT) BEGIN SET SESSION skip_replication=x; END|
CREATE FUNCTION baz (x INT) RETURNS INT BEGIN CALL bar(x); RETURN x; END|
--delimiter ;
--error ER_STORED_FUNCTION_PREVENTS_SWITCH_SKIP_REPLICATION
SELECT foo(0);
--error ER_STORED_FUNCTION_PREVENTS_SWITCH_SKIP_REPLICATION
SELECT baz(0);
--error ER_STORED_FUNCTION_PREVENTS_SWITCH_SKIP_REPLICATION
SET @a= foo(1);
--error ER_STORED_FUNCTION_PREVENTS_SWITCH_SKIP_REPLICATION
SET @a= baz(1);
--error ER_STORED_FUNCTION_PREVENTS_SWITCH_SKIP_REPLICATION
UPDATE t2 SET b=foo(0);
--error ER_STORED_FUNCTION_PREVENTS_SWITCH_SKIP_REPLICATION
UPDATE t2 SET b=baz(0);
--error ER_STORED_FUNCTION_PREVENTS_SWITCH_SKIP_REPLICATION
INSERT INTO t1 VALUES (101, foo(1));
--error ER_STORED_FUNCTION_PREVENTS_SWITCH_SKIP_REPLICATION
INSERT INTO t1 VALUES (101, baz(0));
SELECT @@skip_replication;
CALL bar(0);
SELECT @@skip_replication;
CALL bar(1);
SELECT @@skip_replication;
DROP FUNCTION foo;
DROP PROCEDURE bar;
DROP FUNCTION baz;
# Test that master-side filtering happens on the master side, and that
# slave-side filtering happens on the slave.
# First test that events do not reach the slave when master-side filtering
# is configured. Do this by replicating first with only the IO thread running
# and master-side filtering; then change to no filtering and start the SQL
# thread. This should still skip the events, as master-side filtering
# means the events never reached the slave.
connection master;
SET skip_replication= 0;
TRUNCATE t1;
sync_slave_with_master;
connection slave;
STOP SLAVE;
SET GLOBAL replicate_events_marked_for_skip=FILTER_ON_MASTER;
START SLAVE IO_THREAD;
connection master;
SET skip_replication= 1;
INSERT INTO t1(a) VALUES (1);
SET skip_replication= 0;
INSERT INTO t1(a) VALUES (2);
--source include/save_master_pos.inc
connection slave;
--source include/sync_io_with_master.inc
STOP SLAVE IO_THREAD;
SET GLOBAL replicate_events_marked_for_skip=REPLICATE;
START SLAVE;
connection master;
sync_slave_with_master;
connection slave;
# Now only the second insert of (2) should be visible, as the first was
# filtered on the master, so even though the SQL thread ran without skipping
# events, it will never see the event in the first place.
SELECT * FROM t1;
# Now tests that when slave-side filtering is configured, events _do_ reach
# the slave.
connection master;
SET skip_replication= 0;
TRUNCATE t1;
sync_slave_with_master;
connection slave;
STOP SLAVE;
SET GLOBAL replicate_events_marked_for_skip=FILTER_ON_SLAVE;
START SLAVE IO_THREAD;
connection master;
SET skip_replication= 1;
INSERT INTO t1(a) VALUES (1);
SET skip_replication= 0;
INSERT INTO t1(a) VALUES (2);
--source include/save_master_pos.inc
connection slave;
--source include/sync_io_with_master.inc
STOP SLAVE IO_THREAD;
SET GLOBAL replicate_events_marked_for_skip=REPLICATE;
START SLAVE;
connection master;
sync_slave_with_master;
connection slave;
# Now both inserts should be visible. Since filtering was configured to be
# slave-side, the event is in the relay log, and when the SQL thread ran we
# had disabled filtering again.
SELECT * FROM t1 ORDER BY a;
# Clean up.
connection master;
SET skip_replication=0;
DROP TABLE t1,t2;
connection slave;
STOP SLAVE;
SET GLOBAL replicate_events_marked_for_skip=REPLICATE;
START SLAVE;
--source include/rpl_end.inc

35
mysql-test/suite/sys_vars/r/replicate_events_marked_for_skip_basic.result Normal file
View File

@ -0,0 +1,35 @@
#
# Basic testing of replicate_events_marked_for_skip.
#
SET @save_replicate_events_marked_for_skip = @@GLOBAL.replicate_events_marked_for_skip;
SELECT @save_replicate_events_marked_for_skip;
@save_replicate_events_marked_for_skip
replicate
# Scope.
SET @@SESSION.replicate_events_marked_for_skip = "";
ERROR HY000: Variable 'replicate_events_marked_for_skip' is a GLOBAL variable and should be set with SET GLOBAL
SELECT @@SESSION.replicate_events_marked_for_skip;
ERROR HY000: Variable 'replicate_events_marked_for_skip' is a GLOBAL variable
# Argument syntax.
SET @@GLOBAL.replicate_events_marked_for_skip=filter_on_master;
SELECT @@GLOBAL.replicate_events_marked_for_skip;
@@GLOBAL.replicate_events_marked_for_skip
filter_on_master
SET @@GLOBAL.replicate_events_marked_for_skip=filter_on_slave;
SELECT @@GLOBAL.replicate_events_marked_for_skip;
@@GLOBAL.replicate_events_marked_for_skip
filter_on_slave
SET @@GLOBAL.replicate_events_marked_for_skip=replicate;
SELECT @@GLOBAL.replicate_events_marked_for_skip;
@@GLOBAL.replicate_events_marked_for_skip
replicate
SET @@GLOBAL.replicate_events_marked_for_skip=filter;
ERROR 42000: Variable 'replicate_events_marked_for_skip' can't be set to the value of 'filter'
SELECT @@GLOBAL.replicate_events_marked_for_skip;
@@GLOBAL.replicate_events_marked_for_skip
replicate
SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_events_marked_for_skip';
VARIABLE_NAME VARIABLE_VALUE
REPLICATE_EVENTS_MARKED_FOR_SKIP replicate
# Cleanup.
SET @@GLOBAL.replicate_events_marked_for_skip = @save_replicate_events_marked_for_skip;

34
mysql-test/suite/sys_vars/r/skip_replication_basic.result Normal file
View File

@ -0,0 +1,34 @@
select @@global.skip_replication;
ERROR HY000: Variable 'skip_replication' is a SESSION variable
select @@session.skip_replication between 1 and 10000;
@@session.skip_replication between 1 and 10000
0
should be empty
show global variables like 'skip_replication';
Variable_name Value
show session variables like 'skip_replication';
Variable_name Value
skip_replication OFF
should be empty
select * from information_schema.global_variables where variable_name='skip_replication';
VARIABLE_NAME VARIABLE_VALUE
select @@session.skip_replication = variable_value from information_schema.session_variables where variable_name='skip_replication';
@@session.skip_replication = variable_value
1
Warnings:
Warning 1292 Truncated incorrect DOUBLE value: 'OFF'
set session skip_replication=0;
select @@session.skip_replication;
@@session.skip_replication
0
set session skip_replication=1;
select @@session.skip_replication;
@@session.skip_replication
1
select * from information_schema.global_variables where variable_name='skip_replication';
VARIABLE_NAME VARIABLE_VALUE
select variable_value from information_schema.session_variables where variable_name='skip_replication';
variable_value
ON
set global skip_replication=1;
ERROR HY000: Variable 'skip_replication' is a SESSION variable and can't be used with SET GLOBAL

31
mysql-test/suite/sys_vars/t/replicate_events_marked_for_skip_basic.test Normal file
View File

@ -0,0 +1,31 @@
source include/not_embedded.inc;
--echo #
--echo # Basic testing of replicate_events_marked_for_skip.
--echo #
SET @save_replicate_events_marked_for_skip = @@GLOBAL.replicate_events_marked_for_skip;
SELECT @save_replicate_events_marked_for_skip;
--echo # Scope.
--error ER_GLOBAL_VARIABLE
SET @@SESSION.replicate_events_marked_for_skip = "";
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@SESSION.replicate_events_marked_for_skip;
--echo # Argument syntax.
SET @@GLOBAL.replicate_events_marked_for_skip=filter_on_master;
SELECT @@GLOBAL.replicate_events_marked_for_skip;
SET @@GLOBAL.replicate_events_marked_for_skip=filter_on_slave;
SELECT @@GLOBAL.replicate_events_marked_for_skip;
SET @@GLOBAL.replicate_events_marked_for_skip=replicate;
SELECT @@GLOBAL.replicate_events_marked_for_skip;
--error ER_WRONG_VALUE_FOR_VAR
SET @@GLOBAL.replicate_events_marked_for_skip=filter;
SELECT @@GLOBAL.replicate_events_marked_for_skip;
SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_events_marked_for_skip';
--echo # Cleanup.
SET @@GLOBAL.replicate_events_marked_for_skip = @save_replicate_events_marked_for_skip;

30
mysql-test/suite/sys_vars/t/skip_replication_basic.test Normal file
View File

@ -0,0 +1,30 @@
# exists as a session only
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@global.skip_replication;
# Check the variable has a valid numeric value (assumed to be less then 10000)
select @@session.skip_replication between 1 and 10000;
--echo should be empty
show global variables like 'skip_replication';
show session variables like 'skip_replication';
# Global I_S variable is empty
--echo should be empty
select * from information_schema.global_variables where variable_name='skip_replication';
# Check that I_S value is same as variable
select @@session.skip_replication = variable_value from information_schema.session_variables where variable_name='skip_replication';
#
# show that it's writable
#
set session skip_replication=0;
select @@session.skip_replication;
set session skip_replication=1;
select @@session.skip_replication;
select * from information_schema.global_variables where variable_name='skip_replication';
select variable_value from information_schema.session_variables where variable_name='skip_replication';
--error ER_LOCAL_VARIABLE
set global skip_replication=1;

19
sql/log_event.cc
View File

@ -729,7 +729,7 @@ const char* Log_event::get_type_str()
#ifndef MYSQL_CLIENT
Log_event::Log_event(THD* thd_arg, uint16 flags_arg, bool using_trans)
:log_pos(0), temp_buf(0), exec_time(0), flags(flags_arg),
:log_pos(0), temp_buf(0), exec_time(0),
crc(0), thd(thd_arg),
checksum_alg(BINLOG_CHECKSUM_ALG_UNDEF)
{
@ -741,6 +741,9 @@ Log_event::Log_event(THD* thd_arg, uint16 flags_arg, bool using_trans)
cache_type= Log_event::EVENT_TRANSACTIONAL_CACHE;
else
cache_type= Log_event::EVENT_STMT_CACHE;
flags= flags_arg |
(thd->variables.option_bits & OPTION_SKIP_REPLICATION ?
LOG_EVENT_SKIP_REPLICATION_F : 0);
}
/**
@ -891,7 +894,9 @@ Log_event::do_shall_skip(Relay_log_info *rli)
rli->replicate_same_server_id,
rli->slave_skip_counter));
if ((server_id == ::server_id && !rli->replicate_same_server_id) ||
(rli->slave_skip_counter == 1 && rli->is_in_group()))
(rli->slave_skip_counter == 1 && rli->is_in_group()) ||
(flags & LOG_EVENT_SKIP_REPLICATION_F &&
opt_replicate_events_marked_for_skip != RPL_SKIP_REPLICATE))
return EVENT_SKIP_IGNORE;
if (rli->slave_skip_counter > 0)
return EVENT_SKIP_COUNT;
@ -3901,6 +3906,14 @@ Query_log_event::do_shall_skip(Relay_log_info *rli)
DBUG_PRINT("debug", ("query: %s; q_len: %d", query, q_len));
DBUG_ASSERT(query && q_len > 0);
/*
An event skipped due to @@skip_replication must not be counted towards the
number of events to be skipped due to @@sql_slave_skip_counter.
*/
if (flags & LOG_EVENT_SKIP_REPLICATION_F &&
opt_replicate_events_marked_for_skip != RPL_SKIP_REPLICATE)
DBUG_RETURN(Log_event::EVENT_SKIP_IGNORE);
if (rli->slave_skip_counter > 0)
{
if (strcmp("BEGIN", query) == 0)
@ -10806,7 +10819,7 @@ st_print_event_info::st_print_event_info()
auto_increment_increment(0),auto_increment_offset(0), charset_inited(0),
lc_time_names_number(~0),
charset_database_number(ILLEGAL_CHARSET_INFO_NUMBER),
thread_id(0), thread_id_printed(false),
thread_id(0), thread_id_printed(false), skip_replication(0),
base64_output_mode(BASE64_OUTPUT_UNSPEC), printed_fd_event(FALSE)
{
/*

26
sql/log_event.h
View File

@ -504,6 +504,19 @@ struct sql_ex_info
*/
#define LOG_EVENT_RELAY_LOG_F 0x40
/**
@def LOG_EVENT_SKIP_REPLICATION_F
Flag set by application creating the event (with @@skip_replication); the
slave will skip replication of such events if
--replicate-events-marked-for-skip is not set to REPLICATE.
This is a MariaDB flag; we allocate it from the end of the available
values to reduce risk of conflict with new MySQL flags.
*/
#define LOG_EVENT_SKIP_REPLICATION_F 0x8000
/**
@def OPTIONS_WRITTEN_TO_BIN_LOG
@ -701,6 +714,11 @@ typedef struct st_print_event_info
uint charset_database_number;
uint thread_id;
bool thread_id_printed;
/*
Track when @@skip_replication changes so we need to output a SET
statement for it.
*/
int skip_replication;
st_print_event_info();
@ -993,8 +1011,8 @@ public:
/**
Some 16 flags. See the definitions above for LOG_EVENT_TIME_F,
LOG_EVENT_FORCED_ROTATE_F, LOG_EVENT_THREAD_SPECIFIC_F, and
LOG_EVENT_SUPPRESS_USE_F for notes.
LOG_EVENT_FORCED_ROTATE_F, LOG_EVENT_THREAD_SPECIFIC_F,
LOG_EVENT_SUPPRESS_USE_F, and LOG_EVENT_SKIP_REPLICATION_F for notes.
*/
uint16 flags;
@ -4143,6 +4161,8 @@ public:
m_message.str= NULL; /* Just as a precaution */
m_message.length= 0;
set_direct_logging();
/* Replicate the incident irregardless of @@skip_replication. */
flags&= ~LOG_EVENT_SKIP_REPLICATION_F;
DBUG_VOID_RETURN;
}
@ -4153,6 +4173,8 @@ public:
DBUG_PRINT("enter", ("m_incident: %d", m_incident));
m_message= msg;
set_direct_logging();
/* Replicate the incident irregardless of @@skip_replication. */
flags&= ~LOG_EVENT_SKIP_REPLICATION_F;
DBUG_VOID_RETURN;
}
#endif

2
sql/mysqld.cc
View File

@ -437,6 +437,8 @@ uint opt_large_page_size= 0;
MYSQL_PLUGIN_IMPORT uint opt_debug_sync_timeout= 0;
#endif /* defined(ENABLED_DEBUG_SYNC) */
my_bool opt_old_style_user_limits= 0, trust_function_creators= 0;
ulong opt_replicate_events_marked_for_skip;
/*
True if there is at least one per-hour limit for some user, so we should
check them before each query (and possibly reset counters when hour is

1
sql/mysqld.h
View File

@ -109,6 +109,7 @@ extern my_bool opt_old_style_user_limits, trust_function_creators;
extern uint opt_crash_binlog_innodb;
extern char *shared_memory_base_name, *mysqld_unix_port;
extern my_bool opt_enable_shared_memory;
extern ulong opt_replicate_events_marked_for_skip;
extern char *default_tz_name;
extern Time_zone *default_tz;
extern char *default_storage_engine;

1
sql/set_var.h
View File

@ -171,6 +171,7 @@ protected:
#include "sql_plugin.h" /* SHOW_HA_ROWS, SHOW_MY_BOOL */
/****************************************************************************
Classes for parsing of the SET command
****************************************************************************/

5
sql/share/errmsg-utf8.txt
View File

@ -6557,4 +6557,7 @@ ER_CONNECTION_KILLED 70100
eng "Connection was killed"
ER_INTERNAL_ERROR
eng "Internal error: '%-.192s'"
ER_INSIDE_TRANSACTION_PREVENTS_SWITCH_SKIP_REPLICATION
eng "Cannot modify @@session.skip_replication inside a transaction"
ER_STORED_FUNCTION_PREVENTS_SWITCH_SKIP_REPLICATION
eng "Cannot modify @@session.skip_replication inside a stored function or trigger"

64
sql/slave.cc
View File

@ -1710,6 +1710,48 @@ when it try to get the value of TIME_ZONE global variable from master.";
past_checksum:
#endif
/*
Request the master to filter away events with the @@skip_replication flag
set, if we are running with
--replicate-events-marked-for-skip=FILTER_ON_MASTER.
*/
if (opt_replicate_events_marked_for_skip == RPL_SKIP_FILTER_ON_MASTER)
{
if (mysql_real_query(mysql, STRING_WITH_LEN("SET skip_replication=1")))
{
err_code= mysql_errno(mysql);
if (is_network_error(err_code))
{
mi->report(ERROR_LEVEL, err_code,
"Setting master-side filtering of @@skip_replication failed "
"with error: %s", mysql_error(mysql));
goto network_err;
}
else if (err_code == ER_UNKNOWN_SYSTEM_VARIABLE)
{
/*
The master is older than the slave and does not support the
@@skip_replication feature.
This is not a problem, as such master will not generate events with
the @@skip_replication flag set in the first place. We will still
do slave-side filtering of such events though, to handle the (rare)
case of downgrading a master and receiving old events generated from
before the downgrade with the @@skip_replication flag set.
*/
DBUG_PRINT("info", ("Old master does not support master-side filtering "
"of @@skip_replication events."));
}
else
{
/* Fatal error */
errmsg= "The slave I/O thread stops because a fatal error is "
"encountered when it tries to request filtering of events marked "
"with the @@skip_replication flag.";
sprintf(err_buff, "%s Error: %s", errmsg, mysql_error(mysql));
goto err;
}
}
}
err:
if (errmsg)
{
@ -2498,6 +2540,9 @@ int apply_event_and_update_pos(Log_event* ev, THD* thd, Relay_log_info* rli)
ev->when= hrtime_to_my_time(hrtime);
ev->when_sec_part= hrtime_sec_part(hrtime);
}
thd->variables.option_bits=
(thd->variables.option_bits & ~OPTION_SKIP_REPLICATION) |
(ev->flags & LOG_EVENT_SKIP_REPLICATION_F ? OPTION_SKIP_REPLICATION : 0);
ev->thd = thd; // because up to this point, ev->thd == 0
int reason= ev->shall_skip(rli);
@ -4062,6 +4107,7 @@ static int queue_event(Master_info* mi,const char* buf, ulong event_len)
int error= 0;
String error_msg;
ulong inc_pos;
ulong event_pos;
Relay_log_info *rli= &mi->rli;
mysql_mutex_t *log_lock= rli->relay_log.get_log_lock();
ulong s_id;
@ -4134,7 +4180,6 @@ static int queue_event(Master_info* mi,const char* buf, ulong event_len)
(uchar)buf[EVENT_TYPE_OFFSET] != FORMAT_DESCRIPTION_EVENT /* a way to escape */)
DBUG_RETURN(queue_old_event(mi,buf,event_len));
LINT_INIT(inc_pos);
mysql_mutex_lock(&mi->data_lock);
switch ((uchar)buf[EVENT_TYPE_OFFSET]) {
@ -4326,6 +4371,23 @@ static int queue_event(Master_info* mi,const char* buf, ulong event_len)
break;
}
/*
If we filter events master-side (eg. @@skip_replication), we will see holes
in the event positions from the master. If we see such a hole, adjust
mi->master_log_pos accordingly so we maintain the correct position (for
reconnect, MASTER_POS_WAIT(), etc.)
*/
if (inc_pos > 0 &&
event_len >= LOG_POS_OFFSET+4 &&
(event_pos= uint4korr(buf+LOG_POS_OFFSET)) > mi->master_log_pos + inc_pos)
{
inc_pos= event_pos - mi->master_log_pos;
DBUG_PRINT("info", ("Adjust master_log_pos %lu->%lu to account for "
"master-side filtering",
(unsigned long)(mi->master_log_pos + inc_pos),
event_pos));
}
/*
If this event is originating from this server, don't queue it.
We don't check this for 3.23 events because it's simpler like this; 3.23

9
sql/slave.h
View File

@ -152,6 +152,15 @@ extern ulonglong relay_log_space_limit;
*/
#define SLAVE_FORCE_ALL 4
/*
Values for the option --replicate-events-marked-for-skip.
Must match the names in replicate_events_marked_for_skip_names in sys_vars.cc
*/
#define RPL_SKIP_REPLICATE 0
#define RPL_SKIP_FILTER_ON_SLAVE 1
#define RPL_SKIP_FILTER_ON_MASTER 2
int init_slave();
int init_recovery(Master_info* mi, const char** errmsg);
void init_slave_skip_errors(const char* arg);

11
sql/sql_binlog.cc
View File

@ -44,6 +44,7 @@
void mysql_client_binlog_statement(THD* thd)
{
ulonglong save_skip_replication;
DBUG_ENTER("mysql_client_binlog_statement");
DBUG_PRINT("info",("binlog base64: '%*s'",
(int) (thd->lex->comment.length < 2048 ?
@ -225,7 +226,17 @@ void mysql_client_binlog_statement(THD* thd)
reporting.
*/
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
save_skip_replication= thd->variables.option_bits&OPTION_SKIP_REPLICATION;
thd->variables.option_bits=
(thd->variables.option_bits & ~OPTION_SKIP_REPLICATION) |
(ev->flags & LOG_EVENT_SKIP_REPLICATION_F ?
OPTION_SKIP_REPLICATION : 0);
err= ev->apply_event(rli);
thd->variables.option_bits=
(thd->variables.option_bits & ~OPTION_SKIP_REPLICATION) |
save_skip_replication;
#else
err= 0;
#endif

1
sql/sql_priv.h
View File

@ -151,6 +151,7 @@
Note! Reserved for use in MySQL Cluster
*/
#define OPTION_ALLOW_BATCH (ULL(1) << 36) // THD, intern (slave)
#define OPTION_SKIP_REPLICATION (ULL(1) << 37) // THD, user
/* The rest of the file is included in the server only */
#ifndef MYSQL_CLIENT

156
sql/sql_repl.cc
View File

@ -556,8 +556,60 @@ static int send_heartbeat_event(NET* net, String* packet,
/*
TODO: Clean up loop to only have one call to send_file()
Helper function for mysql_binlog_send() to write an event down the slave
connection.
Returns NULL on success, error message string on error.
*/
static const char *
send_event_to_slave(THD *thd, NET *net, String* const packet, ushort flags,
Log_event_type event_type, char *log_file_name,
IO_CACHE *log)
{
my_off_t pos;
/* Do not send annotate_rows events unless slave requested it. */
if (event_type == ANNOTATE_ROWS_EVENT &&
!(flags & BINLOG_SEND_ANNOTATE_ROWS_EVENT))
return NULL;
/*
Skip events with the @@skip_replication flag set, if slave requested
skipping of such events.
*/
if (thd->variables.option_bits & OPTION_SKIP_REPLICATION)
{
/*
The first byte of the packet is a '\0' to distinguish it from an error
packet. So the actual event starts at offset +1.
*/
uint16 event_flags= uint2korr(&((*packet)[FLAGS_OFFSET+1]));
if (event_flags & LOG_EVENT_SKIP_REPLICATION_F)
return NULL;
}
thd_proc_info(thd, "Sending binlog event to slave");
pos= my_b_tell(log);
if (RUN_HOOK(binlog_transmit, before_send_event,
(thd, flags, packet, log_file_name, pos)))
return "run 'before_send_event' hook failed";
if (my_net_write(net, (uchar*) packet->ptr(), packet->length()))
return "Failed on my_net_write()";
DBUG_PRINT("info", ("log event code %d", (*packet)[LOG_EVENT_OFFSET+1] ));
if (event_type == LOAD_EVENT)
{
if (send_file(thd))
return "failed in send_file()";
}
if (RUN_HOOK(binlog_transmit, after_send_event, (thd, flags, packet)))
return "Failed to run hook 'after_send_event'";
return NULL; /* Success */
}
void mysql_binlog_send(THD* thd, char* log_ident, my_off_t pos,
ushort flags)
@ -570,9 +622,9 @@ void mysql_binlog_send(THD* thd, char* log_ident, my_off_t pos,
IO_CACHE log;
File file = -1;
String* packet = &thd->packet;
String* const packet = &thd->packet;
int error;
const char *errmsg = "Unknown error";
const char *errmsg = "Unknown error", *tmp_msg;
const char *fmt= "%s; the last event was read from '%s' at %s, the last byte read was read from '%s' at %s.";
char llbuff1[22], llbuff2[22];
char error_text[MAX_SLAVE_ERRMSG]; // to be send to slave via my_message()
@ -889,52 +941,22 @@ impossible position";
(*packet)[FLAGS_OFFSET+ev_offset] &= ~LOG_EVENT_BINLOG_IN_USE_F;
}
if (event_type != ANNOTATE_ROWS_EVENT ||
(flags & BINLOG_SEND_ANNOTATE_ROWS_EVENT))
if ((tmp_msg= send_event_to_slave(thd, net, packet, flags, event_type,
log_file_name, &log)))
{
pos = my_b_tell(&log);
if (RUN_HOOK(binlog_transmit, before_send_event,
(thd, flags, packet, log_file_name, pos)))
{
my_errno= ER_UNKNOWN_ERROR;
errmsg= "run 'before_send_event' hook failed";
goto err;
}
if (my_net_write(net, (uchar*) packet->ptr(), packet->length()))
{
errmsg = "Failed on my_net_write()";
my_errno= ER_UNKNOWN_ERROR;
goto err;
}
DBUG_EXECUTE_IF("dump_thread_wait_before_send_xid",
{
if (event_type == XID_EVENT)
{
net_flush(net);
}
});
DBUG_PRINT("info", ("log event code %d", event_type));
if (event_type == LOAD_EVENT)
{
if (send_file(thd))
{
errmsg = "failed in send_file()";
my_errno= ER_UNKNOWN_ERROR;
goto err;
}
}
if (RUN_HOOK(binlog_transmit, after_send_event, (thd, flags, packet)))
{
errmsg= "Failed to run hook 'after_send_event'";
my_errno= ER_UNKNOWN_ERROR;
goto err;
}
errmsg= tmp_msg;
my_errno= ER_UNKNOWN_ERROR;
goto err;
}
DBUG_EXECUTE_IF("dump_thread_wait_before_send_xid",
{
if (event_type == XID_EVENT)
{
net_flush(net);
}
});
/* reset transmit packet for next loop */
if (reset_transmit_packet(thd, flags, &ev_offset, &errmsg))
goto err;
@ -1078,43 +1100,13 @@ impossible position";
goto err;
}
if (read_packet &&
(event_type != ANNOTATE_ROWS_EVENT ||
(flags & BINLOG_SEND_ANNOTATE_ROWS_EVENT)))
if (read_packet &&
(tmp_msg= send_event_to_slave(thd, net, packet, flags, event_type,
log_file_name, &log)))
{
thd_proc_info(thd, "Sending binlog event to slave");
pos = my_b_tell(&log);
if (RUN_HOOK(binlog_transmit, before_send_event,
(thd, flags, packet, log_file_name, pos)))
{
my_errno= ER_UNKNOWN_ERROR;
errmsg= "run 'before_send_event' hook failed";
goto err;
}
if (my_net_write(net, (uchar*) packet->ptr(), packet->length()) )
{
errmsg = "Failed on my_net_write()";
my_errno= ER_UNKNOWN_ERROR;
goto err;
}
if (event_type == LOAD_EVENT)
{
if (send_file(thd))
{
errmsg = "failed in send_file()";
my_errno= ER_UNKNOWN_ERROR;
goto err;
}
}
if (RUN_HOOK(binlog_transmit, after_send_event, (thd, flags, packet)))
{
my_errno= ER_UNKNOWN_ERROR;
errmsg= "Failed to run hook 'after_send_event'";
goto err;
}
errmsg= tmp_msg;
my_errno= ER_UNKNOWN_ERROR;
goto err;
}
log.error=0;

178
sql/sys_vars.cc
View File

@ -231,6 +231,35 @@ static Sys_var_ulonglong Sys_binlog_stmt_cache_size(
CMD_LINE(REQUIRED_ARG),
VALID_RANGE(IO_SIZE, ULONGLONG_MAX), DEFAULT(32768), BLOCK_SIZE(IO_SIZE));
/*
Some variables like @sql_log_bin and @binlog_format change how/if binlogging
is done. We must not change them inside a running transaction or statement,
otherwise the event group eventually written to the binlog may become
incomplete or otherwise garbled.
This function does the appropriate check.
It returns true if an error is caused by incorrect usage, false if ok.
*/
static bool
error_if_in_trans_or_substatement(THD *thd, int in_substatement_error,
int in_transaction_error)
{
if (thd->in_sub_stmt)
{
my_error(in_substatement_error, MYF(0));
return true;
}
if (thd->in_active_multi_stmt_transaction())
{
my_error(in_transaction_error, MYF(0));
return true;
}
return false;
}
static bool check_has_super(sys_var *self, THD *thd, set_var *var)
{
DBUG_ASSERT(self->scope() != sys_var::GLOBAL);// don't abuse check_has_super()
@ -271,22 +300,10 @@ static bool binlog_format_check(sys_var *self, THD *thd, set_var *var)
return true;
}
/*
if in a stored function/trigger, it's too late to change mode
*/
if (thd->in_sub_stmt)
{
my_error(ER_STORED_FUNCTION_PREVENTS_SWITCH_BINLOG_FORMAT, MYF(0));
if (error_if_in_trans_or_substatement(thd,
ER_STORED_FUNCTION_PREVENTS_SWITCH_BINLOG_FORMAT,
ER_INSIDE_TRANSACTION_PREVENTS_SWITCH_BINLOG_FORMAT))
return true;
}
/*
Make the session variable 'binlog_format' read-only inside a transaction.
*/
if (thd->in_active_multi_stmt_transaction())
{
my_error(ER_INSIDE_TRANSACTION_PREVENTS_SWITCH_BINLOG_FORMAT, MYF(0));
return true;
}
return false;
}
@ -322,24 +339,10 @@ static bool binlog_direct_check(sys_var *self, THD *thd, set_var *var)
if (var->type == OPT_GLOBAL)
return false;
/*
Makes the session variable 'binlog_direct_non_transactional_updates'
read-only if within a procedure, trigger or function.
*/
if (thd->in_sub_stmt)
{
my_error(ER_STORED_FUNCTION_PREVENTS_SWITCH_BINLOG_DIRECT, MYF(0));
if (error_if_in_trans_or_substatement(thd,
ER_STORED_FUNCTION_PREVENTS_SWITCH_BINLOG_DIRECT,
ER_INSIDE_TRANSACTION_PREVENTS_SWITCH_BINLOG_DIRECT))
return true;
}
/*
Makes the session variable 'binlog_direct_non_transactional_updates'
read-only inside a transaction.
*/
if (thd->in_active_multi_stmt_transaction())
{
my_error(ER_INSIDE_TRANSACTION_PREVENTS_SWITCH_BINLOG_DIRECT, MYF(0));
return true;
}
return false;
}
@ -2015,6 +2018,67 @@ static Sys_var_mybool Sys_master_verify_checksum(
"SHOW BINLOG EVENTS",
GLOBAL_VAR(opt_master_verify_checksum), CMD_LINE(OPT_ARG),
DEFAULT(FALSE));
/* These names must match RPL_SKIP_XXX #defines in slave.h. */
static const char *replicate_events_marked_for_skip_names[]= {
"replicate", "filter_on_slave", "filter_on_master", 0
};
static bool
replicate_events_marked_for_skip_check(sys_var *self, THD *thd,
set_var *var)
{
int thread_mask;
DBUG_ENTER("sys_var_replicate_events_marked_for_skip_check");
/* Slave threads must be stopped to change the variable. */
mysql_mutex_lock(&LOCK_active_mi);
lock_slave_threads(active_mi);
init_thread_mask(&thread_mask, active_mi, 0 /*not inverse*/);
unlock_slave_threads(active_mi);
mysql_mutex_unlock(&LOCK_active_mi);
if (thread_mask) // We refuse if any slave thread is running
{
my_error(ER_SLAVE_MUST_STOP, MYF(0));
DBUG_RETURN(true);
}
DBUG_RETURN(false);
}
bool
Sys_var_replicate_events_marked_for_skip::global_update(THD *thd, set_var *var)
{
bool result;
int thread_mask;
DBUG_ENTER("Sys_var_replicate_events_marked_for_skip::global_update");
/* Slave threads must be stopped to change the variable. */
mysql_mutex_lock(&LOCK_active_mi);
lock_slave_threads(active_mi);
init_thread_mask(&thread_mask, active_mi, 0 /*not inverse*/);
if (thread_mask) // We refuse if any slave thread is running
{
my_error(ER_SLAVE_MUST_STOP, MYF(0));
result= true;
}
else
result= Sys_var_enum::global_update(thd, var);
unlock_slave_threads(active_mi);
mysql_mutex_unlock(&LOCK_active_mi);
DBUG_RETURN(result);
}
static Sys_var_replicate_events_marked_for_skip Replicate_events_marked_for_skip
("replicate_events_marked_for_skip",
"Whether the slave should replicate events that were created with "
"@@skip_replication=1 on the master. Default REPLICATE (no events are "
"skipped). Other values are FILTER_ON_SLAVE (events will be sent by the "
"master but ignored by the slave) and FILTER_ON_MASTER (events marked with "
"@@skip_replication=1 will be filtered on the master and never be sent to "
"the slave).",
GLOBAL_VAR(opt_replicate_events_marked_for_skip), CMD_LINE(REQUIRED_ARG),
replicate_events_marked_for_skip_names, DEFAULT(RPL_SKIP_REPLICATE),
NO_MUTEX_GUARD, NOT_IN_BINLOG,
ON_CHECK(replicate_events_marked_for_skip_check));
#endif
@ -2569,18 +2633,10 @@ static bool check_sql_log_bin(sys_var *self, THD *thd, set_var *var)
if (var->type == OPT_GLOBAL)
return FALSE;
/* If in a stored function/trigger, it's too late to change sql_log_bin. */
if (thd->in_sub_stmt)
{
my_error(ER_STORED_FUNCTION_PREVENTS_SWITCH_SQL_LOG_BIN, MYF(0));
if (error_if_in_trans_or_substatement(thd,
ER_STORED_FUNCTION_PREVENTS_SWITCH_SQL_LOG_BIN,
ER_INSIDE_TRANSACTION_PREVENTS_SWITCH_SQL_LOG_BIN))
return TRUE;
}
/* Make the session variable 'sql_log_bin' read-only inside a transaction. */
if (thd->in_active_multi_stmt_transaction())
{
my_error(ER_INSIDE_TRANSACTION_PREVENTS_SWITCH_SQL_LOG_BIN, MYF(0));
return TRUE;
}
return FALSE;
}
@ -2645,6 +2701,40 @@ static Sys_var_ulong Sys_profiling_history_size(
VALID_RANGE(0, 100), DEFAULT(15), BLOCK_SIZE(1));
#endif
/*
When this is set by a connection, binlogged events will be marked with a
corresponding flag. The slave can be configured to not replicate events
so marked.
In the binlog dump thread on the master, this variable is re-used for a
related purpose: The slave sets this flag when connecting to the master to
request that the master filter out (ie. not send) any events with the flag
set, thus saving network traffic on events that would be ignored by the
slave anyway.
*/
static bool check_skip_replication(sys_var *self, THD *thd, set_var *var)
{
/*
We must not change @@skip_replication in the middle of a transaction or
statement, as that could result in only part of the transaction / statement
being replicated.
(This would be particularly serious if we were to replicate eg.
Rows_log_event without Table_map_log_event or transactional updates without
the COMMIT).
*/
if (error_if_in_trans_or_substatement(thd,
ER_STORED_FUNCTION_PREVENTS_SWITCH_SKIP_REPLICATION,
ER_INSIDE_TRANSACTION_PREVENTS_SWITCH_SKIP_REPLICATION))
return 1;
return 0;
}
static Sys_var_bit Sys_skip_replication(
"skip_replication", "skip_replication",
SESSION_ONLY(option_bits), NO_CMD_LINE, OPTION_SKIP_REPLICATION,
DEFAULT(FALSE), NO_MUTEX_GUARD, NOT_IN_BINLOG,
ON_CHECK(check_skip_replication));
static Sys_var_harows Sys_select_limit(
"sql_select_limit",
"The maximum number of rows to return from SELECT statements",
@ -3521,7 +3611,7 @@ static Sys_var_mybool Sys_query_cache_strip_comments(
static ulonglong in_transaction(THD *thd)
{
return test(thd->server_status & SERVER_STATUS_IN_TRANS);
return test(thd->in_active_multi_stmt_transaction());
}
static Sys_var_session_special Sys_in_transaction(
"in_transaction", "Whether there is an active transaction",

20
sql/sys_vars.h
View File

@ -1800,6 +1800,26 @@ public:
}
};
/*
Class for replicate_events_marked_for_skip.
We need a custom update function that ensures the slave is stopped when
the update is happening.
*/
class Sys_var_replicate_events_marked_for_skip: public Sys_var_enum
{
public:
Sys_var_replicate_events_marked_for_skip(const char *name_arg,
const char *comment, int flag_args, ptrdiff_t off, size_t size,
CMD_LINE getopt,
const char *values[], uint def_val, PolyLock *lock,
enum binlog_status_enum binlog_status_arg,
on_check_function on_check_func)
:Sys_var_enum(name_arg, comment, flag_args, off, size, getopt,
values, def_val, lock, binlog_status_arg, on_check_func)
{}
bool global_update(THD *thd, set_var *var);
};
/****************************************************************************
Used templates
****************************************************************************/