The --skip-write-binlog message was confusing that it only had
an effect if the galera was enabled. There are uses beyond galera
so we apply SET SESSION SQL_LOG_BIN=0 as implied by the option
without being conditional on the wsrep status.
We also with --skip-write-binlog actually check the session @@WSREP_ON
variable rather than the global server variable.
Since 10.6, the wsrep_mode could replicate Aria and MyISAM, in which
case no change to innodb and back is needed.
By removing the conditions, we can use LOCK TABLES in a general case
improving the load speed of Aria (MDEV-23326), regardless of the
skip-write-binlog flag. The only case where we don't use LOCK TABLES is
when we are replicating via Innodb, because wsrep_on=1 and wsrep_mode
doesn't contain REPLICATE_ARIA{,MYISAM}. This uses an Innodb transaction
instead. When replicating via InnoDB we change the table engine type
back to what it was originally.
By removing the \d and other syntax that requires parsing by
the mariadb client, we can use the generated SQL more generally, like
in the embedded server.
We also save and restore the SQL_LOG_BIN and WSREP_ON session server
variables so this can be included in the same session as other data
without taking into changes in state.
Remove wsrep.mysql_tzinfo_to_sql_symlink{,_skip} tests as they offered
no additional coverage beyond main.mysql_tzinfo_to_sql_symlink (no
server testing was done).
Add galera.mariadb_tzinfo_to_sql to actually test the replication
of tzinfo data through galera.
The conditional executable comment around /*M!100602 ...
START TRANSACTION .. LOCK TABLES.. */ is so that we can provide tzinfo
files (MDEV-27113, MDBF-389) and in the case that a user uses it on a
pre-10.6 server version it will still work. Both START TRANSACTION and
LOCK TABLES are not supported in prepared statements in MariaDB versions
earlier than 10.6.2.
Reviewed by Brandon Nesterenko
The test encryption.innodb-redo-nokeys did not actually test
recovery without valid keys, because due to the setting
innodb_encrypt_tables, InnoDB refused to start up at all,
without even attempting any crash recovery.
fil_ibd_load(): If the encryption key is not available,
refuse to load the file.
buf_page_t::set_state(): Relax a debug assertion. It is fine to update
a read-fixed block descriptor to be both read-fixed and buffer-fixed.
buf_pool_t::watch_unset(): Fix some incorrect logic that was implemented
in commit e9e6db9355.
Thanks to Elena Stepanova for the test case.
We will remove the parameter innodb_disallow_writes because it is badly
designed and implemented. The parameter was never allowed at startup.
It was only internally used by Galera snapshot transfer.
If a user executed
SET GLOBAL innodb_disallow_writes=ON;
the server could hang even on subsequent read operations.
During Galera snapshot transfer, we will block writes
to implement an rsync friendly snapshot, as follows:
sst_flush_tables() will acquire a global lock by executing
FLUSH TABLES WITH READ LOCK, which will block any writes
at the high level.
sst_disable_innodb_writes(), invoked via ha_disable_internal_writes(true),
will suspend or disable InnoDB background tasks or threads that could
initiate writes. As part of this, log_make_checkpoint() will be invoked
to ensure that anything in the InnoDB buf_pool.flush_list will be written
to the data files. This has the nice side effect that the Galera joiner
will avoid crash recovery.
The changes to sql/wsrep.cc and to the tests are based on a prototype
that was developed by Jan Lindström.
Reviewed by: Jan Lindström
This commit contains a fix to use modern syntax for selecting
character classes in the tr utility options.
Also one of the tests for SST via rsync (galera_sst_rysnc2) is made
more reliable (to avoid rare failures during automatic testing).
The issue is caused by 59a0236da4 commit.
The initial intention of the commit was to speed up
"mariabackup --prepare".
The call stack of binlog position reading is the following:
▾ trx_rseg_mem_restore
▾ trx_rseg_array_init
▾ trx_lists_init_at_db_start
▸ srv_start
Both trx_lists_init_at_db_start() and trx_rseg_mem_restore() contain
special cases for srv_operation == SRV_OPERATION_RESTORE condition, and
on this condition only rseg headers are read to parse binlog position.
Performance impact is not so big.
The solution is to revert 59a0236da4.
rpl.rpl_semi_sync_slave_compressed_protocol.test was manually
re-enabled only in 10.3 but left disabled in 10.4+. The fix went
into 10.3+, but the test was left disabled in later versions. This
commit re-enables the test in 10.4+.
mariabackup does not load dictionary during backup, but it loads
tablespaces, that is why fil_system.max_assigned_id is not set with
dict_check_tablespaces_and_store_max_id(). There is no sense to issue the
warning during backup.
Task 6:
We can find the .frm type of file. If it is sequence then is_sequence
passed to dd_frm_type() will be true. Since there is already a check
to give error message if we trigger is on temporary table or view, an
additional condition is added to check if .frm is sequence
(is_sequence==true) and error message is changed to show
"Trigger's '%-.192s' is view, temporary table or sequence" instead of
"Trigger's '%-.192s' is view or temporary table".
Task 4 and 5:
Already fixed when I started working on bug. Task 4 correctly gives syntax
error ('(' and ')' are not part of create sequence syntax). Task 5 also
gives correct error because s1 is table not sequence. Fails with
ER_NOT_SEQUENCE2
Task 1:
If table is added to list using option TL_OPTION_SEQUENCE (done when we
have sequence functions) then then we are dealing with sequence instead
of table. So global table list will have sequence set to true. This is
used to check and give correct error message about unknown sequence
instead of table doesn't exist.
Fix a possible crash on my_free() due to the use of strdup() versus
my_strdup(), and a memory leak.
Reviewed-by: Jan Lindström <jan.lindstrom@mariadb.com>
As main() invokes parse_page() when -S or -D are set, it can be a case
when parse_page() is invoked when -D filename is not set, that is why
any attempt to write to page dump file must be done only if the file
name is set with -D.
The bug is caused by 2ef7a5a13a
(MDEV-13443).
records_are_comparable() requires this condition:
bitmap_is_subset(table->write_set, table->read_set)
On first iteration vers_update_fields() changes write_set and
read_set. On second iteration the above condition fails.
Added missing read bit for ROW_START. Also reorganized
bitmap_set_bit() so it is called only when needed.
Throw ER_NOT_FORM_FILE if this is wrong FRM data (warning with
ER_VERS_FIELD_WRONG_TYPE is still printed for deeper knowledge of what
was happened).
Keep ER_VERS_FIELD_WRONG_TYPE for creating partitioned table with
trx-versioning. Tested by MDEV-15951 in trx_id.test
In commit 7a4fbb55b0 (MDEV-25105)
the innochecksum option --write (-w) was removed altogether.
It should have been made a Boolean option, so that old data files
may be converted to a format that is compatible with
innodb_checksum_algorithm=strict_crc32 by executing the following:
innochecksum -n -w ibdata* */*.ibd
It would be better to use an older-version innochecksum
for such a conversion, so that page checksums will be validated
before updating the checksum.
It never was possible for innochecksum to convert files to the
innodb_checksum_algorithm=full_crc32 format that is the default
for new InnoDB data files.
This also fixes MDEV-20198: Instant ALTER TABLE is not crash safe
InnoDB dictionary recovery wrongly used the READ UNCOMMITTED isolation
level, causing some mismatch. For example, if a table was renamed or
replaced in a transaction, according to READ UNCOMMITTED the table might
not exist at all.
We implement READ COMMITTED isolation level for accessing the dictionary
tables SYS_TABLES, SYS_COLUMNS, SYS_INDEXES, SYS_FIELDS, SYS_VIRTUAL,
SYS_FOREIGN, SYS_FOREIGN_COLS. For most of these tables, no secondary
index exists. For the secondary indexes (on SYS_TABLES.ID,
SYS_FOREIGN.FOR_NAME, SYS_FOREIGN.REF_NAME), we will always look up
the primary key in the clustered index and check if the record actually
is a committed version.
dict_check_sys_tables(): Recover tablespaces also from delete-marked
committed records, so that if a matching .ibd file exists, it will
be removed by fil_delete_tablespace() when the committed delete-marked
SYS_INDEXES record of the clustered index is purged
in row_purge_remove_clust_if_poss_low().
fil_ibd_open(): Change the Boolean parameter "validate" to a ternary
one, to suppress error messages when the file might not exist.
It is possible that a .ibd file was deleted and the server shut down
before the SYS_INDEXES and SYS_TABLES records were purged. Hence, if
dict_check_sys_tables() finds a committed delete-marked record,
we must not complain if the tablespace file is not found.
On Windows, we msut treat ERROR_PATH_NOT_FOUND (directory not found)
in the same way as ERROR_FILE_NOT_FOUND. This fixes a few failures where
a previous test successfully executed DROP DATABASE (and deleted all
files and the directory), but a committed delete-marked SYS_TABLES
record had not been purged before server restart.
dict_getnext_system_low(): Do not filter out delete-marked records.
dict_startscan_system(), dict_getnext_system(): Do filter out
delete-marked records, for accessing the INFORMATION_SCHEMA tables.
dict_sys_tables_rec_read(): Return the DB_TRX_ID of the committed
version of the record. This is needed in dict_load_table_low().
dict_load_foreign_cols(), dict_load_foreign(): Add a parameter for
the current transaction identifier. In some DDL operations, the
FOREIGN KEY constraints are being loaded from the data dictionary
before the DDL transaction has been committed. For SYS_FOREIGN
and SYS_FOREIGN_COLS, we must implement the special case of
READ COMMITTED that the changes of the uncommitted current transaction
are visible.
dict_load_foreign(): Validate the table name. We could find a
SYS_FOREIGN.ID via a committed delete-marked secondary index record
that does not match the REF_NAME or FOR_NAME of the secondary index record.
dict_load_index_low(): Optionally take the table as a parameter,
so that table->def_trx_id can be updated in case of a
committed delete-marked SYS_INDEXES record corresponding
to DROP INDEX, but not corresponding to an index stub of ADD INDEX.
dict_load_indexes(): Do not update table->def_trx_id
in case of delete-marked records.
rec_is_metadata(), rec_offs_make_valid(), rec_get_offsets_func(),
row_build_low(): Relax some assertions. We may now have
!index->is_instant() even if a metadata record is present in the index.
Previously, the recovery of instant ADD/DROP COLUMN assumed
that READ UNCOMMITTED of the data dictionary will be performed.
Now, we will have a READ COMMITTED copy of the data dictionary
cache, and a READ UNCOMMITTED copy of the metadata record.
btr_page_reorganize_low(): Correctly update the FIL_PAGE_TYPE
when rolling back an instant ADD/DROP COLUMN operation.
row_rec_to_index_entry_impl(): Relax some assertions,
and disallow accessing "extra" fields. This fixes the recovery
of a crash during an instant ADD COLUMN after a successful
instant DROP COLUMN, in the test innodb.instant_alter_crash.
Tested by: Matthias Leich
Problem: In regular replication, when master binlogged using statement format
slave might not have written an event to its binary log when the Query
event aimed at a temporary table.
Specifically this was observed with LOAD DATA INFILE.
This effect was possible because unlike master slave holds temporary
tables in its pool and the master side check of existence of a
temporary table at the format bin-logging decision did not apply.
Solution: replace THD::has_thd_temporary_tables() with
THD::has_temporary_tables which allows to identify temporary table
presence on either side.
--
Reviewed by Andrei Elkin.
This commit adds a mtr test for reproducing a test scenario where despite of
innodb_disallow_writes blocking, writes to file system can still happen.
The test launches a garbd node, which triggers one of the cluster node to switch to
SST donor state. In this state, all disk activity should be halted, and e.g.
innodb_disallow_writes has been set. The test records md5sum aggregate over mariadb
data directory when the node enters the donor state, and records another md5sum
when the node leaves the donor state. If there is no IO activity in data directory, these
hashes should be equal.
For this test, the Donor state processing, has beeen instrumented so that, SST donor thread can be
stopped when entering the donor state. The test uses this new dbug sync point,
to control when to record the md5sums.
New SST script was added: wsrep_sst_backup, and garbd uses backup method to lauch the donor
node to call this script, and to enter in donor state.
The backup script could be later extended as general purpose backup method for the cluster.
This commit fixes also one race condition happening in wsrep_sst_rsync, like this:
* wsrep_rsync_sst script requests for flush tables,
and then waits in a loop until mariadbd has created file tables_flushed,
as confirmation that FLUSH TABLES has completed
* mariadbd's SST donor thread, wakes for the flush table request and then performs FTWRL,
and after this it creates the tables_flushed file
* note that SST script will now continue to startup rsync sending
* mariadbd's SST donor thread now calls for sst_disallow_writes(),
so that innodb would setup disk IO blockage, however rsyncing may already be ongoing at this point
This race condition is fixed in this commit, by performing all disk IO blocking before
creating the tables_flushed file.
Reviewed-by: Jan Lindström <jan.lindstrom@mariadb.com>
Problem:
========
When the mysql.gtid_slave_pos table uses the InnoDB engine, and
mysqld starts, it reads the table and begins a transaction. After
reading the value, it should end the transaction and release all
associated locks. The bug reported in DBAAS-7828 shows that when
autocommit is off, the locks are not released, resulting in
indefinite hangs on future attempts to change gtid_slave_pos. In
particular, the transaction was not properly finalized because
thd->server_status was not updated to reflect the end of the
transaction.
Solution:
========
This patch updates the code to properly commit the transaction after
reading gtid_slave_pos during mysqld start-up.
Reviewed By:
============
Andrei Elkin <andrei.elkin@mariadb.com>
Analysis: utf8 character set is now utf8mb3 or utf8mb4. So charset_master
is not able to find utf8 at the beginning of test. Hence it skips the tests
that use charset_master.
Fix: rename utf8 to utf8mb3 in charset_master.
Problem:
========
When using mariadb-binlog with --raw and --stop-never, events from
the master's currently active log file should be written to their
respective log file specified by --result-file, and shown on-disk.
There is a bug where mariadb-binlog does not flush the result file
to disk when new events are received
Solution:
========
Add a function call to flush mariadb-binlog’s result file after
receiving an event in --raw mode.
Reviewed By:
============
Andrei Elkin <andrei.elkin@mariadb.com>
The call mtr.add_suppression() that was added
in commit 75b7cd680b
for MemorySanitizer and Valgrind runs is causing
a result difference for the test rpl.rpl_gtid_stop_start.
Let us disable the binlog for executing that statement.
Also, the test perfschema.statement_program_lost_inst
would fail due to the changes to have_innodb.inc in this commit.
To compensate for that, we will make more --suite=perfschema
tests run without InnoDB, and explicitly enable InnoDB in
those tests that depend on a transactional storage engine.
A few regression tests invoke heavy flushing of the buffer pool
and may trigger warnings that tablespaces could not be deleted
because of pending writes. Those warnings are to be expected
during the execution of such tests.
The warnings are also frequently seen with Valgrind or MemorySanitizer.
For those, the global suppression in have_innodb.inc does the trick.
