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xtrabackup_checkpoints
This commit contains workaround for a bug known as 'Red Hat issue 1870279'
(connection reset by peer issue in socat versions 1.7.3.3 to 1.7.4.0) which
further causes crashes during SST using mariabackup (when openssl is used).
Also fixed broken logic of automatic generation of the Diffie-Hellman parameters
for socat version less than 1.7.3 (which defaults to 512-bit values instead of
2048-bit ones).
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This commit fixes a divergence in the IST/SST script code between
the 10.3+ and 10.9+ branches, due to which the cluster cannot contain
nodes with different versions of the server (since in this case SST/IST
scripts may fail).
This commit also includes test fixes specific to 10.4+ branches and
a few manual fixes after automatic "git cherry-pick", as well as server
code change specific to 10.9+.
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Table_cache_instance: Define the structure aligned at
the CPU cache line, and remove a pad[] data member.
Krunal Bauskar reported this to improve performance on ARMv8.
aligned_malloc(): Wrapper for the Microsoft _aligned_malloc()
and the ISO/IEC 9899:2011 <stdlib.h> aligned_alloc().
Note: The parameters are in the Microsoft order (size, alignment),
opposite of aligned_alloc(alignment, size).
Note: The standard defines that size must be an integer multiple
of alignment. It is enforced by AddressSanitizer but not by GNU libc
on Linux.
aligned_free(): Wrapper for the Microsoft _aligned_free() and
the standard free().
HAVE_ALIGNED_ALLOC: A new test. Unfortunately, support for
aligned_alloc() may still be missing on some platforms.
We will fall back to posix_memalign() for those cases.
HAVE_MEMALIGN: Remove, along with any use of the nonstandard memalign().
PFS_ALIGNEMENT (sic): Removed; we will use CPU_LEVEL1_DCACHE_LINESIZE.
PFS_ALIGNED: Defined using the C++11 keyword alignas.
buf_pool_t::page_hash_table::create(),
lock_sys_t::hash_table::create():
lock_sys_t::hash_table::resize(): Pad the allocation size to an
integer multiple of the alignment.
Reviewed by: Vladislav Vaintroub
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FILE_CHECKPOINT
There was a race condition between log_checkpoint_low() and
deleting or renaming data files. The scenario is as follows:
1. The buffer pool does not contain dirty pages.
2. A FILE_DELETE or FILE_RENAME record is written.
3. The checkpoint LSN will be moved ahead of the write of the record.
4. The server is killed before the file is actually renamed or deleted.
We will prevent this race condition by ensuring that a log checkpoint
cannot occur between the durable write and the file system operation:
1. Durably write the FILE_DELETE or FILE_RENAME record.
2. Perform the file system operation.
3. Allow any log checkpoint to proceed.
mtr_t::commit_file(): Implement the DELETE or RENAME logic.
fil_delete_tablespace(): Delegate some of the logic to
mtr_t::commit_file().
fil_space_t::rename(): Delegate some logic to mtr_t::commit_file().
Remove the debug injection point fil_rename_tablespace_failure_2
because we do test RENAME failures without any debug injection.
fil_name_write_rename_low(), fil_name_write_rename(): Remove.
Tested by Matthias Leich
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buf_page_create_low(): Before retrying, release the exclusive page latch
in order to prevent an infinite loop in buf_pool_t::corrupted_evict().
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Work around MDEV-28718 for now, but also optimize the interation
of information_schema.SYSTEM_VARIABLES.
Add test case to show that tzinfo data into bootstrap is
desired functionality.
Bug report thanks to Dan Lenski of AWS.
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Disable building hashicorp encryption plugin statically
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recv_recover_page
recv_recover_page(): Correct a debug assertion to refer to recv_sys.lsn,
which may be ahead of log_sys.lsn during non-final recovery batches.
In commit 685d958e38b825ad9829be311f26729cccf37c46 (MDEV-14425)
when some redundant LSN fields were removed,
log_sys.log.scanned_lsn had been replaced with a reference to
log_sys.lsn instead of the more appropriate recv_sys.lsn.
recv_scan_log(): Remove a redundant call to log_sys.set_recovered_lsn().
It suffices to adjust the log_sys.lsn after parsing (and before starting
to apply) records for the last batch.
Note: Normally, log_sys.lsn must be the latest log sequence number.
Before the final recovery batch, this may be safely violated, because
log_write_up_to() will be a no-op. That function will be invoked by the
buf_flush_page_cleaner thread to initiate writes of recovered pages.
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Avoid the loop with getting rid of back and forth jumping.
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ha_innobase::prepare_inplace_alter_table(): If the ALTER TABLE
operation is no-op for InnoDB, do reset m_prebuilt->trx_id
so that ha_innobase::table_version() will always report either 0
or the identifier of the transaction that would commit changes
to the InnoDB data dictionary.
The failure scenario involved a completed DROP INDEX followed by
a no-op ALTER TABLE during which the server was killed.
An effort to create a reproducible test failed.
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Since commit 0b47c126e31cddda1e94588799599e138400bcf8 (MDEV-13542)
we treat all-zero pages as corrupted ones.
During a stress test, a read-ahead of an all-zero page was triggered
and the page read was completed concurrently with buf_page_create_low().
This caused the assertion to fail, because buf_page_create_low() was
waiting for the page latch.
buf_page_get_low(): Only invoke buf_pool_t::corrupted_evict()
if the block was not already marked as corrupted.
buf_page_create_low(): On page identifier mismatch, retry the
buf_pool.page_hash lookup.
buf_pool_t::corrupted_evict(): Set the state of the block to FREED
so that a concurrent buf_page_get_low() will refuse to load the page.
Wait for the page latch to be vacant before proceeding to remove
the block from buf_pool.page_hash and buf_pool.LRU.
page_id_t::set_corrupted(), page_id_t::is_corrupted(): Accessors
for indicating a corrupted page identifier.
Tested by Matthias Leich
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Lex_exact_charset_opt_extended_collate::Lex_exact_charset_opt_extended_collate on SET NAMES
These system variables:
@@character_set_client
@@character_set_connection
@@character_set_database
@@character_set_filesystem
@@character_set_results
@@character_set_server
can now be set in numeric format only to IDs of default collations, e.g.:
SET @@character_set_xxx=9; -- OK (latin2_general_ci is default)
SET @@character_set_xxx=2; -- ERROR (latin2_czech_cs is not default)
SET @@character_set_xxx=21; -- ERROR (latin2_hungarian_ci is not default)
Before this change the server accepted IDs of non-default collations
so all three examples above worked without errors,
but this could lead to unexpected behavior in later statements.
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In commit c4c88307091cb16886562e9e7b77f5fd077d34b5 (MDEV-28111) we disabled
the file system cache on the InnoDB write-ahead log file (ib_logfile0)
by default on Linux.
It turns out that especially with innodb_flush_trx_log_at_commit=2,
writing to the log via the file system cache typically improves throughput,
especially on slow storage or at a small number of concurrent transactions.
For other values of innodb_flush_log_at_trx_commit, direct writes were
observed to be mostly but not always faster. Whether it pays off to
disable the file system cache on the log may depend on the type of storage,
the workload, and the operating system kernel version.
On Linux and Microsoft Windows, we will introduce the settable Boolean
global variable innodb_log_file_buffering that indicates whether the
file system cache on the redo log file is enabled. The default value is
innodb_log_file_buffering=OFF. If the server is started up with
innodb_flush_log_at_trx_commit=2, the value will be changed to
innodb_log_file_buffering=ON.
When a persistent memory interface is being used for the log,
the value cannot be changed from innodb_log_file_buffering=OFF.
On Linux, when the physical block size cannot be determined
to be a power of 2 between 64 and 4096 bytes, the file system cache
cannot be disabled, and innodb_log_file_buffering=ON cannot be changed.
Server log messages will indicate whether the file system cache is
enabled for the redo log:
[Note] InnoDB: Buffered log writes (block size=512 bytes)
[Note] InnoDB: File system buffers for log disabled (block size=512 bytes)
After this change, the startup parameter innodb_flush_method will no
longer control whether O_DIRECT will be set on the redo log on Linux.
On other operating systems that support O_DIRECT, no interface has been
implemented for controlling the file system cache for the redo log.
The innodb_flush_method values O_DIRECT, O_DIRECT_NO_FSYNC, O_DSYNC
will enable O_DIRECT for data files, not the log.
Tested by: Matthias Leich, Axel Schwenke
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trx_purge_free_segment(): Do mark that the block will be modified.
It seems possible that this regression was introduced by the
changes to the page-freeing logic
in commit 4179f93d28035ea2798cb1c16feeaaef87ab4775 (MDEV-18976).
Tested by: Matthias Leich
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- innodb_fts.sync_block doesn't make sense after MDEV-25581's patch
because fts cache syncing is done as a part of insert operation
and it leads to completion of select over insert sometimes.
This test case is not relevant any more
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In commit 73fee39ea62037780c59161507e89dd76c10b7a3 (MDEV-27985)
a regression was introduced that would cause bpage=nullptr to
be referenced.
buf_flush_LRU_list_batch(): Always terminate the loop upon
encountering a null pointer.
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assertion: id != 0 on ALTER ... REBUILD PARTITION
During rebuild of partition, the partitioning engine calls
alter_close_table(), which does not unlock and close some table
instances of the target table.
Then, the engine fails to rename partitions because there are table
instances that are still locked.
Closing all the table instance of the target table fixes the bug.
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MariaDB codebase is huge and Lintian has lots of test than
can fire false-positive warnings which leads to situation
where real problems can't be spotted.
Suspend obvious false-positive Lintian warnings and
let Lintian problems that needs some love shine
out.
Suspends in package mariadb-test-data
Supporting BSD family needs to use '/usr/bin/env perl' and not '/usr/bin/perl'
Perl script are for testing and not for production in mariadb-test-data
package:
* incorrect-path-for-interpreter
There is several files with national-encoding which are test file so they
can't be in unicode charset
* national-encoding
Serveral test paths are intentionally repeated:
* repeated-path-segment
Suspends in package mariadb-test
Supporting BSD family needs to use '/usr/bin/env perl' and not '/usr/bin/perl'
Perl script are for testing and not for production in mariadb-test-data
package:
* incorrect-path-for-interpreter
Suspends in package source package
Remade some 'version-substvar-for-external-package' to use
regex.
MGroonga is missing source file 'jquery-ui-1.8.18.custom.js' correct
lintian suspend with regex:
* source-is-missing
There is several files with very long line lenghts. Add suspends
for those that can't be corrected in several places. Most
of them are test result files, SQL test files or intentional
long lines that can't be splitted.
* very-long-line-length-in-source-file
There is several autogenerated C++ files which probably should not
be there but they should not do any harm:
* source-contains-autogenerated-visual-c++-file
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innodb_drop_database(): Use explicit TO_BINARY casts on
SYS_TABLES.NAME, which for historical reasons uses the wrong collation
latin1_swedish_ci instead of BINARY.
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Problem:
========
InnoDB FTS requesting the fts sync of the table once the fts
cache size reaches 1/10 of innodb_ft_cache_size. But fts_sync()
releases cache lock when writing the word. By doing this, InnoDB
insert thread increases the innodb fts cache memory and
SYNC operation will take more time to complete.
Solution:
=========
Remove the fts sync operation(FTS_MSG_SYNC_TABLE) from
the fts optimize background thread. Instead of that,
allow user thread to sync the InnoDB fts cache when
the cache size exceeds 512 kb. User thread holds
cache lock while doing cache syncing, it make sure that
other threads doesn't add the docs into the cache.
Removed FTS_MSG_SYNC_TABLE and its related function
because we do remove the FTS_MSG_SYNC_TABLE message
itself.
Removed fts_sync_index_check() and all related
function because other threads doesn't add while
cache operation going on.
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This fixes up commit 3d241eb948855dbe0688a04c8111cc78deac3c1c
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These had been damaged during some merge which caused --embedded
test to fail
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Compiling hashicorp plugin statically got many InnoDB
encryption test to fail with errors like:
Error: InnoDB: The page [page id: space=5, page number=3] in file './test/t1.ibd' cannot be decrypted.
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