-Wdeprecated-copy-with-user-provided-copy was causing a few errors on
things that where defined in a way that was implicit. By removing code
it now compiles without warnings.
tested with fc38 / clang-16
The problem is that s390x is not using the default bzip library we use
on other platforms, which causes compressed string lengths to be differnt
than what mtr tests expects.
Fixed by:
- Added have_normal_bzip.inc, which checks if compress() returns the
expected length.
- Adjust the results to match the expected one
- main.func_compress.test & archive.archive
- Don't print lengths that depends on compression library
- mysqlbinlog compress tests & connect.zip
- Don't print DATA_LENGTH for SET column_compression_zlib_level=1
- main.column_compression
- Server aborts when table doesn't have referenced index.
This is caused by 5f09b53bdb (MDEV-31086).
While iterating the foreign key constraints, we fail to
consider that InnoDB doesn't have referenced index for
it when foreign key check is disabled.
The function log_free_check() is not supposed to be invoked while
the caller is holding any InnoDB synchronization objects, such as
buffer page latches, tablespace latches, index tree latches, or
in this case, rseg->mutex (rseg->latch in 10.6 or later).
A hang was reported in 10.6 where several threads were waiting for
an rseg->latch that had been exclusively acquired in
trx_purge_truncate_history(), which invoked log_free_check() inside
trx_purge_truncate_rseg_history(). Because the threads that were
waiting for the rseg->latch were holding exclusive latches on some
index pages, log_free_check() was unable to advance the checkpoint
because those index pages could not be written out.
trx_purge_truncate_history(): Invoke log_free_check() before
acquiring the rseg->mutex and invoking trx_purge_free_segment().
trx_purge_free_segment(): Do not invoke log_free_check() in order
to avoid a deadlock.
Problem:
========
InnoDB fails to mark the page status as FREED during
freeing of an extent of a segment. This behaviour affects
scrubbing and doesn't write all zeroes in file even though
pages are freed.
Solution:
========
InnoDB should mark the page status as FREED before
reinitialize the extent descriptor entry.
For clang compiler the compiler's flag -Wno-unused-but-set-variable
was set based on compiler version. This approach could result in
false positive detection for presence of compiler option since
only first three groups of digits in compiler version taken into account
and it could lead to inaccuracy in determining of supported compiler's
features.
Correct way to detect options supported by a compiler is to use
the macros MY_CHECK_CXX_COMPILER_FLAG and to check the result of
variable with prefix have_CXX__
So, to check whether compiler does support the option
-Wno-unused-but-set-variable
the macros
MY_CHECK_CXX_COMPILER_FLAG(-Wno-unused-but-set-variable)
should be called and the result variable
have_CXX__Wno_unused_but_set_variable
be tested for assigned value.
innodb_max_purge_lag_wait_update(): Return immediately if we are
in high_level_read_only mode.
srv_wake_purge_thread_if_not_active(): Relax a debug assertion.
If srv_read_only_mode holds, purge_sys.enabled() will not hold
and this function will do nothing.
trx_t::commit_in_memory(): Remove a redundant condition before
invoking srv_wake_purge_thread_if_not_active().
Spider connection string is a comma-separated parameter definitions,
where each definition is of the form "<param_title> <param_value>",
where <param_value> is quote delimited on both ends, with backslashes
acting as an escaping prefix.
Despite the simple syntax, the existing spider connection string
parser was poorly-written, complex, hard to reason and error-prone,
causing issues like the one described in MDEV-31117. For example it
treated param title the same way as param value when assigning, and
have nonsensical fields like delim_title_len and delim_title.
Thus as part of the bugfix, we clean up the spider comment connection
string parsing, including:
- Factoring out some code from the parsing function
- Simplify the struct `st_spider_param_string_parse`
- And any necessary changes caused by the above changes
buf_LRU_block_remove_hashed(): Remove a comment that had been added
in mysql/mysql-server@aad1c7d0dd
and apparently referring to buf_LRU_invalidate_tablespace(),
which was later replaced with buf_LRU_flush_or_remove_pages() and
ultimately with buf_flush_remove_pages() and buf_flush_list_space().
All that code is covered by buf_pool.mutex. The note about releasing
the hash_lock for the buf_pool.page_hash slice would actually apply to
the last reference to hash_lock in buf_LRU_free_page(), for the
case zip=false (retaining a ROW_FORMAT=COMPRESSED page while
discarding the uncompressed one).
buf_read_page_low(): Remove an error message that could be triggered
by buf_read_ahead_linear() or buf_read_ahead_random().
This is a backport of commit c9eff1a144
from MariaDB Server 10.5.
buf_read_ahead_random(), buf_read_ahead_linear(): Avoid read-ahead
of the last page(s) of ROW_FORMAT=COMPRESSED tablespaces that use
a page size of 1024 or 2048 bytes. We invoke os_file_set_size() on
integer multiples of 4096 bytes in order to be compatible with
the requirements of innodb_flush_method=O_DIRECT regardless of the
physical block size of the underlying storage.
This change must be null-merged to MariaDB Server 10.5 and later.
There, out-of-bounds read-ahead should be handled gracefully
by simply discarding the buffer page that had been allocated.
Tested by: Matthias Leich
Restore code to make InnoDB choose the second transaction as a deadlock
victim if two transactions deadlock that need to commit in-order for
parallel replication. This code was erroneously removed when VATS was
implemented in InnoDB.
Also add a test case for InnoDB choosing the right deadlock victim.
Also fixes this bug, with testcase that reliably reproduces:
MDEV-28776: rpl.rpl_mark_optimize_tbl_ddl fails with timeout on sync_with_master
Note: This should be null-merged to 10.6, as a different fix is needed
there due to InnoDB locking code changes.
Signed-off-by: Kristian Nielsen <knielsen@knielsen-hq.org>
Remove the exception that InnoDB does not report auto-increment locks waits
to the parallel replication.
There was an assumption that these waits could not cause conflicts with
in-order parallel replication and thus need not be reported. However, this
assumption is wrong and it is possible to get conflicts that lead to hangs
for the duration of --innodb-lock-wait-timeout. This can be seen with three
transactions:
1. T1 is waiting for T3 on an autoinc lock
2. T2 is waiting for T1 to commit
3. T3 is waiting on a normal row lock held by T2
Here, T3 needs to be deadlock killed on the wait by T1.
Note: This should be null-merged to 10.6, as a different fix is needed
there due to InnoDB lock code changes.
Signed-off-by: Kristian Nielsen <knielsen@knielsen-hq.org>
- InnoDB aborts when table is dropping the column. This is
caused by 5f09b53bdb (MDEV-31086).
While iterating the altered table fields, we fail to consider
the dropped columns.
when validating vcol's (default, check, etc) in ALTER TABLE
vcol_info->flags are modified in place. This means that if ALTER TABLE
fails for any reason we need to restore them to their original values.
(mroonga was freeing the memory on ::reset() but not on ::close())
mark old keys in the ALTER TABLE with the `old` flag, not with
the `key_create_info.check_for_duplicate_indexes`.
This allows to mark old foreign keys too.
HA_UNIQUE_CHECK was
* only used internally by MyISAM/Aria
* only used for internal temporary tables (for DISTINCT)
* never saved in frm
* saved in MYI/MAD but only for temporary tables
* only set, never checked
it's safe to remove it and free the bit (there are only 16 of them)
This patch adds for "--ps-protocol" second execution
of queries "SELECT".
Also in this patch it is added ability to disable/enable
(--disable_ps2_protocol/--enable_ps2_protocol) second
execution for "--ps-prototocol" in testcases.
First UPDATE under START TRANSACTION does nothing (nstate= nstate),
but anyway generates history. Since update vector is empty we get into
(!uvect->n_fields) branch which only adds history row, but does not do
update. After that we get current row with wrong (old) row_start value
and because of that second UPDATE tries to insert history row again
because it sees trx->id != row_start which is the guard to avoid
inserting multiple trx_id-based history rows under same transaction
(because we have same trx_id and we get duplicate error and this bug
demostrates that). But this try anyway fails because PK is based on
row_end which is constant under same transaction, so PK didn't change.
The fix moves vers_make_update() to an earlier stage of
calc_row_difference(). Therefore it prepares update vector before
(!uvect->n_fields) check and never gets into that branch, hence no
need to handle versioning inside that condition anymore.
Now trx->id and row_start are equal after first UPDATE and we don't
try to insert second history row.
== Cleanups and improvements ==
ha_innobase::update_row():
vers_set_fields and vers_ins_row are cleaned up into direct condition
check. SQLCOM_ALTER_TABLE check now is not used as this is dead code,
assertion is done instead.
upd_node->is_delete is set in calc_row_difference() just to keep
versioning code as much in one place as possible. vers_make_delete()
is still located in row_update_for_mysql() as this is required for
ha_innodbase::delete_row() as well.
row_ins_duplicate_error_in_clust():
Restrict DB_FOREIGN_DUPLICATE_KEY to the better conditions.
VERSIONED_DELETE is used specifically to help lower stack to
understand what caused current insert. Related to MDEV-29813.
1. Exclude merging history rows into fts index.
The check !history_fts && (index->type & DICT_FTS) was just incorrect
attempt to avoid history in fts index.
2. Don't check for duplicates for history rows.
Add the end of file marker x1A to the DBF file and handle it
correctly to preserve interoperability with Libreoffice, and others
that have followed the DBF spec.
The file open mode of "a+" was problematic because Linux and the OSX,
the previous main development mode are inconsistent (see man fopen).
The main problem per the bug report was the inability to fseek back to the
beginning to update the records in the header.
As such the "a+" mode is remove and "w+b" is used inserting to a new file
and "r+b" is used for appending to the file.
In DBFFAM::CloseTableFile move PlugCloseFile down to close the file in
all modes.
The year unlike the comments is always since 1900. Use the
YYYY-MM-DD as an unabigious form during tracing.
Thanks for Mr. Zoltan Duna for the descriptive bug report.
The existing (incorrect) overriding mechanism is:
Non-minus-one var value overrides table param overrides default value.
Before MDEV-27169, unspecified var value is -1. So if the user sets
both the var to be a value other than -1 and the table param, the var
value will prevail, which is incorrect.
After MDEV-27169, unspecified var value is default value. So if the
user does not set the var but sets the table param, the default value
will prevail, which is even more incorrect.
This patch fixes it so that table param, if specified, always
overrides var value, and the latter if not specified or set to -1,
falls back to the default value
We achieve this by replacing all such overriding in spd_param.cc with
macros that override in the correct way, and removing all the
"overriding -1" lines involving table params in
spider_set_connect_info_default() except for those table params not
defined as sysvar/thdvar in spd_params.cc
We also introduced macros for non-overriding sysvar and thdvar, so
that the code is cleaner and less error-prone
In server versions where MDEV-27169 has not been applied, we also
backport the patch, that is, replacing -1 default values with real
default values
In server versions where MDEV-28006 has not been applied, we do the
same for udf params
PROBLEM:
A deadlock was possible when a transaction tried to "upgrade" an already
held Record Lock to Next Key Lock.
SOLUTION:
This patch is based on observations that:
(1) a Next Key Lock is equivalent to Record Lock combined with Gap Lock
(2) a GAP Lock never has to wait for any other lock
In case we request a Next Key Lock, we check if we already own a Record
Lock of equal or stronger mode, and if so, then we change the requested
lock type to GAP Lock, which we either already have, or can be granted
immediately, as GAP locks don't conflict with any other lock types.
(We don't consider Insert Intention Locks a Gap Lock in above statements).
The reason of why we don't upgrage Record Lock to Next Key Lock is the
following.
Imagine a transaction which does something like this:
for each row {
request lock in LOCK_X|LOCK_REC_NOT_GAP mode
request lock in LOCK_S mode
}
If we upgraded lock from Record Lock to Next Key lock, there would be
created only two lock_t structs for each page, one for
LOCK_X|LOCK_REC_NOT_GAP mode and one for LOCK_S mode, and then used
their bitmaps to mark all records from the same page.
The situation would look like this:
request lock in LOCK_X|LOCK_REC_NOT_GAP mode on row 1:
// -> creates new lock_t for LOCK_X|LOCK_REC_NOT_GAP mode and sets bit for
// 1
request lock in LOCK_S mode on row 1:
// -> notices that we already have LOCK_X|LOCK_REC_NOT_GAP on the row 1,
// so it upgrades it to X
request lock in LOCK_X|LOCK_REC_NOT_GAP mode on row 2:
// -> creates a new lock_t for LOCK_X|LOCK_REC_NOT_GAP mode (because we
// don't have any after we've upgraded!) and sets bit for 2
request lock in LOCK_S mode on row 2:
// -> notices that we already have LOCK_X|LOCK_REC_NOT_GAP on the row 2,
// so it upgrades it to X
...etc...etc..
Each iteration of the loop creates a new lock_t struct, and in the end we
have a lot (one for each record!) of LOCK_X locks, each with single bit
set in the bitmap. Soon we run out of space for lock_t structs.
If we create LOCK_GAP instead of lock upgrading, the above scenario works
like the following:
// -> creates new lock_t for LOCK_X|LOCK_REC_NOT_GAP mode and sets bit for
// 1
request lock in LOCK_S mode on row 1:
// -> notices that we already have LOCK_X|LOCK_REC_NOT_GAP on the row 1,
// so it creates LOCK_S|LOCK_GAP only and sets bit for 1
request lock in LOCK_X|LOCK_REC_NOT_GAP mode on row 2:
// -> reuses the lock_t for LOCK_X|LOCK_REC_NOT_GAP by setting bit for 2
request lock in LOCK_S mode on row 2:
// -> notices that we already have LOCK_X|LOCK_REC_NOT_GAP on the row 2,
// so it reuses LOCK_S|LOCK_GAP setting bit for 2
In the end we have just two locks per page, one for each mode:
LOCK_X|LOCK_REC_NOT_GAP and LOCK_S|LOCK_GAP.
Another benefit of this solution is that it avoids not-entirely
const-correct, (and otherwise looking risky) "upgrading".
The fix was ported from
mysql/mysql-server@bfba840dfamysql/mysql-server@75cefdb1f7
Reviewed by: Marko Mäkelä
fil_node_open_file_low(): Always acquire an advisory lock on
the system tablespace. Originally, we already did this in
SysTablespace::open_file(), but SysTablespace::open_or_create()
would release those locks when it is closing the file handles.
This is a 10.5+ specific follow up to
commit 0ee1082bd2 (MDEV-28495).
Thanks to Daniel Black for verifying this bug.
This fixes mdev_26541.test, and the new clean_up_spider.inc will be
useful for other tests where part of deinit_spider does not apply,
e.g. those testing spider initialisation only.
- When foreign_key_check is disabled, allowing to modify the
column which is part of foreign key constraint can lead to
refusal of TRUNCATE TABLE, OPTIMIZE TABLE later. So it make
sense to block the column modify operation when foreign key
is involved irrespective of foreign_key_check variable.
Correct way to modify the charset of the column when fk is involved:
SET foreign_key_checks=OFF;
ALTER TABLE child DROP FOREIGN KEY fk, MODIFY m VARCHAR(200) CHARSET utf8mb4;
ALTER TABLE parent MODIFY m VARCHAR(200) CHARSET utf8mb4;
ALTER TABLE child ADD CONSTRAINT FOREIGN KEY (m) REFERENCES PARENT(m);
SET foreign_key_checks=ON;
fk_check_column_changes(): Remove the FOREIGN_KEY_CHECKS while
checking the column change for foreign key constraint. This
is the partial revert of commit 5f1f2fc0e4
and it changes the behaviour of copy alter algorithm
ha_innobase::prepare_inplace_alter_table(): Find the modified
column and check whether it is part of existing and newly
added foreign key constraint.
recv_sys_t::parse(): For undo tablespace truncation mini-transactions,
remember the start_lsn instead of the end LSN. This is what we expect
after commit 461402a564 (MDEV-30479).
