ACCEPTED BUT PARSED INCORRECTLY
When we are setting the value in a system variable,
We can set it like
set sys_var="Iden1.Iden2"; //1
set sys_var='Iden1.Iden2'; //2
set sys_var=Iden1.Iden2; //3
set sys_var=.ident1.ident2; //4
set sys_var=`Iden1.Iden2`; //5
While parsing, for case 1(when ANSI_QUOTES is enable) and 2,
we will take as string literal(we will make item of type Item_string).
for case 3 & 4, taken as Item_field, where Iden1 is a table name and
iden2 is a field name.
for case 5, again Item_field type, where iden1.iden2 is taken as
field name.
Now in case 1, when we are assigning some value to system variable
(which can take string or enumerate type data), we are setting only
field part.
This means only iden2 value will be set for system variable. This
result in wrong result.
Solution:
(for string type) We need to Document that we are not allowed to set
system variable which takes string as identifier, otherwise result
in unexpected behaviour.
(for enumerate type)
if we pass iden1.iden2, we will give an error ER_WRONG_TYPE_FOR_VAR
(Incorrect argument type to variable).
mysql-test/suite/sys_vars/t/general_log_file_basic.test:
Earlier we used to give ER_WRONG_VALUE_FOR_VAR error, but in the patch of
(Bug32748-Inconsistent handling of assignments to general_log_file/slow_query_log_file)
they quoted this line.But i am not able to find any relation of this with the changes of
patch. So i think We should give error in this case.
mysql-test/suite/sys_vars/t/slow_query_log_file_basic.test:
Earlier we used to give ER_WRONG_VALUE_FOR_VAR error, but in the patch of
(Bug32748-Inconsistent handling of assignments to general_log_file/slow_query_log_file)
they quoted this line.But i am not able to find any relation of this with the changes of
patch. So i think We should give error in this case.
Added variable "OLD_MODE" that can be used to turn off the new behavior
mysql-test/r/insert.result:
Added test case
mysql-test/r/mysqld--help.result:
Added old_mode
mysql-test/suite/sys_vars/r/old_mode_basic.result:
Added testing of new variable
mysql-test/suite/sys_vars/t/old_mode_basic.test:
Added testing of new variable
mysql-test/t/insert.test:
Added test case
sql/sql_class.h:
Added bit flags for OLD_MODE
sql/sql_insert.cc:
Disable duplicate key warnings for INSERT IGNORE of OLD_MODE NO_DUP_KEY_WARNINGS_WITH_IGNORE is used
sql/sql_show.cc:
Don't show progress reporting on SHOW PROCESSLIST if OLD_MODE NO_PROGRESS_INFO is used
sql/sys_vars.cc:
Added OLD_MODE
The maximum value for innodb_thread_sleep_delay is 4294967295 (32-bit) or
18446744073709551615 (64-bit) microseconds. This is way too big, since
the max value of innodb_thread_sleep_delay is limited by
innodb_adaptive_max_sleep_delay if that value is set to non-zero value
(its default is 150,000).
Solution
The maximum value of innodb_thread_sleep_delay should be the same as
the maximum value of innodb_adaptive_max_sleep_delay, which is 1000000.
Approved by Jimmy, rb#4429
- thread_pool_size command line option upper limit increased to 100 000
(same as for max_connections)
- thread_pool_size system variable upper limit is maximum of 128 or
the value given at command line
- thread groups are now allocated dynamically
Different limit for command line option and system variable was done to
avoid additional mutex for all_groups and threadpool_max_size.
Problem:
sys_vars.rpl_init_slave_func test was failing sporadically
on 5.5+.
Fix:
Added assert condition after wait for checks.
Recorded test and enabled it.
BUG#12535301- SYS_VARS.RPL_INIT_SLAVE_FUNC MISMATCHES IN DAILY-5.5
Problem:
sys_vars.rpl_init_slave_func test was not recorded after
the last edit. It was disabled on 5.1 after seeing failures
due to the above reason.
No old failures as this suite never ran with pb2 on 5.1
Fix:
Added assert condition after wait for checks.
Recorded test and enabled it.
SUITE FOR 5.1
SYS_VARS suite is not enabled in MTR by default
run. Enabling it with this check-in.
mysql-test/suite/sys_vars/t/disabled.def:
Till the bugs are fixed, disabling the failed test scripts
buf_page_get_gen(): Do not attempt to decompress a compressed-only
page when mode == BUF_PEEK_IF_IN_POOL. This mode is only being used by
btr_search_drop_page_hash_when_freed(). There cannot be any adaptive
hash index pointing to a page that does not exist in uncompressed
format in the buffer pool.
innodb_buffer_pool_evict_update(): New function for debug builds, to handle
SET GLOBAL innodb_buffer_pool_evicted='uncompressed'
by evicting all uncompressed page frames of compressed tablespaces
from the buffer pool.
rb#1873 approved by Jimmy Yang
When a binlog is replayed into a server, e.g.:
$ mysqlbinlog binlog.000001 | mysql
it sets a pseudo slave mode on the client connection in order to server
be able to read binlog events, there is, a format description event is
needed to correctly read following events.
Also this pseudo slave mode applies to the current connection
replication rules that are needed to correctly apply binlog events.
If a binlog dump is sourced on a connection, this pseudo slave mode will
remains after it, what will apply unexpected rules from customer
perspective to following commands.
Added a new SET statement to binlog dump that will unset pseudo slave
mode at the end of dump file.
- no need to use --skip-ndb in collections files anymore, since long but
more clear logic after recent mtr.pl fixes. ndb tests are never run in MySQL Server
unless explicitly requested
- remove sys_vars.ndb_log_update_as_write_basic.test and sys_vars.ndb_log_updated_only_basic.result since MySQL Server does not have those
options.
- Only sys_vars.have_ndbcluster_basic left since MySQL Server has that variable hardcoded.
btr_lift_page_up() writes wrong page number (different by -1) for upper than father page.
But in almost all of the cases, the father page should be root page, no upper
pages. It is very rare path.
In addition the leaf page should not be lifted unless the father page is root.
Because the branch pages should not become the leaf pages.
rb://1336 approved by Marko Makela.
two tests still fail:
main.innodb_icp and main.range_vs_index_merge_innodb
call records_in_range() with both range ends being open
(which triggers an assert)
Problem
========
Replication breaks in the cases if the event length exceeds
the size of master Dump thread's max_allowed_packet.
The reason why this failure is occuring is because the event length is
more than the total size of the max_allowed_packet, on addition of the
max_event_header length exceeds the max_allowed_packet of the DUMP thread.
This causes the Dump thread to break replication and throw an error.
That can happen e.g with row-based replication in Update_rows event.
Fix
====
The problem is fixed in 2 steps:
1.) The Dump thread limit to read event is increased to the upper limit
i.e. Dump thread reads whatever gets logged in the binary log.
2.) On the slave side we increase the the max_allowed_packet for the
slave's threads (IO/SQL) by increasing it to 1GB.
This is done using the new server option (slave_max_allowed_packet)
included, is used to regulate the max_allowed_packet of the
slave thread (IO/SQL) by the DBA, and facilitates the sending of
large packets from the master to the slave.
This causes the large packets to be received by the slave and apply
it successfully.
sql/log_event.cc:
The max_allowed_packet is not evaluated to the new option
slave_max_allowed_packet after the fix.
sql/log_event.h:
Added the new option in the log_event.h file.
sql/mysqld.cc:
Added a new option to the server.
sql/slave.cc:
Increasing the session max_allowed_packet to a large value,
i.e. not taking global(max_allowed) into consideration, for the slave's threads.
sql/sql_repl.cc:
The dump thread's max_allowed_packet is set to the upper limit
which makes it independent and it now reads whatever gets
logged in the binary log.
Problem
========
SQL statements close to the size of max_allowed_packet produce binary
log events larger than max_allowed_packet.
The reason why this failure is occuring is because the event length is
more than the total size of the max_allowed_packet + max_event_header
length. Now since the event length exceeds this size master Dump
thread is unable to send the packet on to the slave.
That can happen e.g with row-based replication in Update_rows event.
Fix
====
The problem was fixed by increasing the max_allowed_packet for the
slave's threads (IO/SQL) by increasing it to 1GB.
This is done using the new server option included which is used to
regulate the max_allowed_packet of the slave thread (IO/SQL).
This causes the large packets to be received by the slave and apply
it successfully.
sql/log_event.h:
Added the new option in the log_event.h file.
sql/mysqld.cc:
Added a new option to the server.
sql/slave.cc:
Increasing the session max_allowed_packet to a large value ,
i.e. not taking global(max_allowed) into consideration, for the slave's threads.
Fixed failing tests in sys_vars as we have now stricter checking of setting of variables.
mysql-test/suite/sys_vars/r/innodb_adaptive_flushing_basic.result:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/r/innodb_adaptive_hash_index_basic.result:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/r/innodb_large_prefix_basic.result:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/r/innodb_random_read_ahead_basic.result:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/r/innodb_stats_on_metadata_basic.result:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/r/innodb_strict_mode_basic.result:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/r/innodb_support_xa_basic.result:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/r/innodb_table_locks_basic.result:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/r/rpl_semi_sync_master_enabled_basic.result:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/r/rpl_semi_sync_slave_enabled_basic.result:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/t/innodb_adaptive_flushing_basic.test:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/t/innodb_adaptive_hash_index_basic.test:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/t/innodb_large_prefix_basic.test:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/t/innodb_random_read_ahead_basic.test:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/t/innodb_stats_on_metadata_basic.test:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/t/innodb_strict_mode_basic.test:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/t/innodb_support_xa_basic.test:
One can now only assign 0 or 1 to boolean variables
mysql-test/suite/sys_vars/t/innodb_table_locks_basic.test:
One can now only assign 0 or 1 to boolean variables
mysys/my_getsystime.c:
Merge + fixed bug that __NR_clock_gettime didn't work in 5.5
Make the slave options --replicate-* dynamic variables so that these
options can be changed dynamically while the server is running,
which enables users to modify replication filtering rules without
having to stop and restart the server.
This is accomplished by just requiring that the slave threads are
stopped when these options are set dynamically. Since filtering
rules are only used by the SQL slave thread, setting them while the
thread is not running avoids the need for locking.
