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Sergei Golubchik: Needs Fixing on 2012-08-15

Diff: 34 lines (+3/-3)

2 files modified

BUILD/check-cpu (+1/-1)
sql/threadpool_unix.cc (+2/-2)

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3493. By Antony T Curtis on 2012-08-15

Simple change to permit building on DragonFlyBSD

3492. By Kristian Nielsen on 2012-08-14

MDEV-450: Deadlock between starting a slave and reading system variables

Starting the SQL thread might deadlock with reading the values of the
replication filtering options.

The deadlock is due to a lock order violation when the variables are
read or set. For example, reading replicate_ignore_table first
acquires LOCK_global_system_variables in sys_var::value_ptr and later
acquires LOCK_active_mi in Sys_var_rpl_filter::global_value_ptr. This
violates the order established when starting a SQL thread, where
LOCK_active_mi is acquired before start_slave, and ends up creating a
thread (handle_slave_sql) that allocates a THD handle whose
constructor acquires LOCK_global_system_variables in THD::init.

The solution is to unlock LOCK_global_system_variables before the
replication filtering options are set or read. This way the lock
order is preserved and the data being read/set is still protected
given that it acquires LOCK_active_mi.

3491. By Sergei Golubchik on 2012-08-13

MDEV-364 Server crashes in add_identifier on concurrent ALTER TABLE and SHOW ENGINE INNODB STATUS

fix add_identifier() to distinguish between temporary tables (#sql- prefix) and temporary partitions (#TMP# suffix).
change add_identifier() to use the same name variant constants as sql_partition.cc does.

3490. By Sergei Golubchik on 2012-08-13

MDEV-286 mytop is not installed in 5.5

include mytop in bintars, rpms, and debs.
install mysqlbug.1 too.

3489. By Sergei Golubchik on 2012-08-11

MDEV-336 oqgraph 5.5 crashes in buildbot

compile oqgraph with -fno-strict-aliasing

3488. By Sergei Golubchik on 2012-08-10

compiler warnings

3487. By Sergei Golubchik on 2012-08-09

fix val_str_ascii to return a string in the ascii-compatible charset.
two items didn't do that properly, one was exploitable, the other was not, but fixed anyway.

3486. By Sergei Golubchik on 2012-08-09

merge with MySQL 5.5.27

manually checked every change, reverted incorrect or stupid changes.

3485. By Sergei Golubchik on 2012-08-08

MDEV-392 MTR: skip-combinations option is declared in help, but is ignored

remove unused mtr option

3484. By Michael Widenius on 2012-08-06

Fixed compiler warnings