- If InnoDB encounters garbage or incomplete written log block during
recovery then don't throw the error. Treat it as end of the log.
- This kind of incomplete or empty block can be result of killing
InnoDB when writing the redo log.
The update callback functions for several settable global InnoDB variables
are acquiring InnoDB latches while holding LOCK_global_system_variables.
On the other hand, some InnoDB code is invoking THDVAR() while holding
InnoDB latches. An example of this is thd_lock_wait_timeout() that is
called by lock_rec_enqueue_waiting(). In some cases, the
intern_sys_var_ptr() that is invoked by THDVAR() may acquire
LOCK_global_system_variables, via sync_dynamic_session_variables().
In lock_rec_enqueue_waiting(), we really must be holding some InnoDB
latch while invoking THDVAR(). This implies that
LOCK_global_system_variables must conceptually reside below any InnoDB
latch in the latching order. That in turns implies that the various
update callback functions must release LOCK_global_system_variables
before acquiring any InnoDB mutexes or rw-locks, and reacquire
LOCK_global_system_variables later. The validate functions are being
invoked while not holding LOCK_global_system_variables and thus they
do not need any changes.
The following statements are affected by this:
SET GLOBAL innodb_adaptive_hash_index = …;
SET GLOBAL innodb_cmp_per_index_enabled = 1;
SET GLOBAL innodb_old_blocks_pct = …;
SET GLOBAL innodb_fil_make_page_dirty_debug = …; -- debug builds only
SET GLOBAL innodb_buffer_pool_evict = uncompressed; -- debug builds only
SET GLOBAL innodb_purge_run_now = 1; -- debug builds only
SET GLOBAL innodb_purge_stop_now = 1; -- debug builds only
SET GLOBAL innodb_log_checkpoint_now = 1; -- debug builds only
SET GLOBAL innodb_buf_flush_list_now = 1; -- debug builds only
SET GLOBAL innodb_buffer_pool_dump_now = 1;
SET GLOBAL innodb_buffer_pool_load_now = 1;
SET GLOBAL innodb_buffer_pool_load_abort = 1;
SET GLOBAL innodb_status_output = …;
SET GLOBAL innodb_status_output_locks = …;
SET GLOBAL innodb_encryption_threads = …;
SET GLOBAL innodb_encryption_rotate_key_age = …;
SET GLOBAL innodb_encryption_rotation_iops = …;
SET GLOBAL innodb_encrypt_tables = …;
SET GLOBAL innodb_disallow_writes = …;
buf_LRU_old_ratio_update(): Correct the return type.
Try to fix the race conditions between
SET GLOBAL innodb_ft_aux_table = ...;
and access to the INFORMATION_SCHEMA tables that depend on
this variable.
innodb_ft_aux_table: Replaces
fts_internal_tbl_name,fts_internal_tbl_name2. Just store the
user-specified parameter as is.
innodb_ft_aux_table_id: The table_id corresponding to
SET GLOBAL innodb_ft_aux_table, or 0 if the table does not exist
or does not contain FULLTEXT INDEX. If the table is renamed later,
the INFORMATION_SCHEMA tables will continue to refer to the table.
If the table is dropped or rebuilt, the INFORMATION_SCHEMA tables
will not find the table.
With SET GLOBAL innodb_optimize_fulltext_only=1
in effect, OPTIMIZE TABLE would output words from the fulltext index
to the server error log, even in non-debug builds.
fts_optimize_words(): Remove the unwanted output.
Some places didn't match the previous rules, making the Floor
address wrong.
Additional sed rules:
sed -i -e 's/Place.*Suite .*, Boston/Street, Fifth Floor, Boston/g'
sed -i -e 's/Suite .*, Boston/Fifth Floor, Boston/g'
buf_dblwr_process(): Remove the useless warning that a copy of a page
in the doublewrite buffer is corrupted. We already report an error if a
corrupted page cannot be recovered from the doublewrite buffer.
Note: In MariaDB 10.1, the original bug reported in MDEV-13893 could
still be easily repeatable. In MariaDB 10.2.24, MDEV-12699 should
have reduced the probability considerably.
fts_get_table_name(): Output to a caller-allocated buffer.
fts_get_table_name_prefix(): Use the lower-overhead allocation
ut_malloc() instead of mem_alloc().
This is based on mysql/mysql-server@d1584b9f38
in MySQL 5.7.4.
fts_table_t::parent: Remove the redundant field. Refer to
table->name.m_name instead.
fts_update_sync_doc_id(), fts_update_next_doc_id(): Remove
the redundant parameter table_name.
fts_get_table_name_prefix(): Access the dict_table_t::name.
FIXME: Ensure that this access is always covered by
dict_sys->mutex.
fts_state_t, fts_slot_t::state: Remove. Replaced by fts_slot_t::running
and fts_slot_t::table_id as follows.
FTS_STATE_SUSPENDED: Removed (unused).
FTS_STATE_EMPTY: Removed. table_id=0 will denote empty slots.
FTS_STATE_RUNNING: Equivalent to running=true.
FTS_STATE_LOADED, FTS_STATE_DONE: Equivalent to running=false.
fts_slot_t::table: Remove. Tables will be identified by table_id.
After opening a table, we will check fil_table_accessible() before
accessing the data.
fts_optimize_new_table(), fts_optimize_del_table(),
fts_optimize_how_many(), fts_is_sync_needed():
Remove the parameter tables, and use the static variable fts_slots
(which was introduced in MariaDB 10.2) instead.
No functional change.
Call my_timer_init() only once and then reuse it from InnoDB and
perfschema storage engines.
This patch speeds up empty test for me like this:
./mtr -mem innodb.kevg,xtradb 1.21s user 0.84s system 34% cpu 5.999 total
./mtr -mem innodb.kevg,xtradb 1.12s user 0.60s system 31% cpu 5.385 total
A sequel to 9180e86 and 149b754.
ALTER TABLE ... ADD FOREIGN KEY may crash if parent table is updated
concurrently.
Block FK parent table updates even earlier, before intermediate child
table is created.
Use proper charset info for my_casedn_str() and don't update original
identifiers so that lower_cast_table_names == 2 is honoured.
No functional change.
Call my_timer_init() only once and then reuse it from InnoDB and
perfschema storage engines.
This patch speeds up empty test for me like this:
./mtr -mem innodb.kevg,xtradb 1.21s user 0.84s system 34% cpu 5.999 total
./mtr -mem innodb.kevg,xtradb 1.12s user 0.60s system 31% cpu 5.385 total
For partitioned table, ensure that the AUTO_INCREMENT values will
be assigned from the same sequence. This is based on the following
change in MySQL 5.6.44:
commit aaba359c13d9200747a609730dafafc3b63cd4d6
Author: Rahul Malik <rahul.m.malik@oracle.com>
Date: Mon Feb 4 13:31:41 2019 +0530
Bug#28573894 ALTER PARTITIONED TABLE ADD AUTO_INCREMENT DIFF RESULT DEPENDING ON ALGORITHM
Problem:
When a partition table is in-place altered to add an auto-increment column,
then its values are starting over for each partition.
Analysis:
In the case of in-place alter, InnoDB is creating a new sequence object
for each partition. It is default initialized. So auto-increment columns
start over for each partition.
Fix:
Assign old sequence of the partition to the sequence of next partition
so it won't start over.
RB#21148
Reviewed by Bin Su <bin.x.su@oracle.com>
Correctly document the usage of m_max_value. Remove the const
qualifier, so that the implicit assignment operator can be used.
Make all members of ib_sequence private, and add an accessor
member function max_value().
PROBLEM
=======
An add index doesn't update index length stats in information schema
TABLES table.
FIX
===
Update the dict_table_t variable with index length stats that is
actually calculated post alter . As this variable is used to populated
the information schema index length statistics.
Reviewed by: Bin su<bin.x.su@oracle.com>
RB: 21277
In debug builds, this setting is allowed to be turned off temporarily after it was
turned on during startup. Howewer memory garbage also caused it to be accidentally
turned on when it was disabled at startup.
InnoDB could return the same list again and again if the buffer
passed to trx_recover_for_mysql() is smaller than the number of
transactions that InnoDB recovered in XA PREPARE state.
We introduce the transaction state TRX_PREPARED_RECOVERED, which
is like TRX_PREPARED, but will be set during trx_recover_for_mysql()
so that each transaction will only be returned once.
Because init_server_components() is invoking ha_recover() twice,
we must reset the state of the transactions back to TRX_PREPARED
after returning the complete list, so that repeated traversals
will see the complete list again, instead of seeing an empty list.
Without this tweak, the test main.tc_heuristic_recover would hang
in MariaDB 10.1.
dict_create_foreign_constraints_low(): Tolerate the keywords
IGNORE and ONLINE between the keywords ALTER and TABLE.
We should really remove the hacky FOREIGN KEY constraint parser
from InnoDB.
InnoDB includes 3 parsers, which use 3 lexical analyzers that
are generated with flex. Flex versions before 2.6 emitted
the keyword "register", which is deprecated in C++17.
The lexical analyzers were regenerated as follows:
for s in storage/innobase storage/xtradb
do
(cd "$s"/pars; ./make_flex.sh)
touch "$s"/fts/*.l
make -C "$s"/fts -f Makefile.query
done
This reverts commit 21b2fada7a
and commit 81d71ee6b2.
The MDEV-18464 change introduces a few data race issues. Contrary to
the documentation, the field trx_t::victim is not always being protected
by lock_sys_t::mutex and trx_t::mutex. Most importantly, it seems
that KILL QUERY could wrongly avoid acquiring both mutexes when
invoking lock_trx_handle_wait_low(), in case another thread had
already set trx->victim=true.
We also revert MDEV-12009, because it should depend on the MDEV-18464
fix being present.
Pushed the decision for innodb transaction and system
locking down to lock0lock.cc level. With this,
we can avoid releasing these mutexes for executions
where these mutexes were acquired upfront.
This patch will also fix BF aborting of native threads, e.g.
threads which have declared wsrep_on=OFF. Earlier, we have
used, for innodb trx locks, was_chosen_as_deadlock_victim
flag, for marking inodb transactions, which are victims for
wsrep BF abort. With native threads (wsrep_on==OFF), re-using
was_chosen_as_deadlock_victim flag may lead to inteference
with real deadlock, and to deal with this, the patch has added new
flag for marking wsrep BF aborts only: victim=true
Similar way if replication decides to abort one of the threads
we mark victim by: victim=true
innobase_kill_query
Remove lock sys and trx mutex handling.
wsrep_innobase_kill_one_trx
Mark victim trx with victim=true
trx0trx.h
Remove trx_abort_t type and abort type variable from
trx struct. Add victim variable to trx.
wsrep_kill_victim
Remove abort_type
lock_report_waiters_to_mysql
Take also trx mutex and mark trx as a victim for
replication abort.
lock_trx_handle_wait_low
New low level function to check whether the transaction
has already been rolled back because it was selected as
a deadlock victim, or if it has to wait then cancel
the wait lock.
lock_trx_handle_wait
If transaction is not marked as victim take lock sys
and trx mutex before calling lock_trx_handle_wait_low
and release them after that.
row_search_for_mysql
Remove lock sys and trx mutex taking and releasing.
trx_rollback_to_savepoint_for_mysql_low
trx_commit_in_memory
Clean up victim variable.
