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Thanks to MDEV-15058, there is only one InnoDB buffer pool.
Allocating buf_pool statically removes one level of pointer indirection
and makes code more readable, and removes the awkward initialization of
some buf_pool members.
While doing this, we will also declare some buf_pool_t data members
private and replace some functions with member functions. This is
mostly affecting buffer pool resizing.
This is not aiming to be a complete rewrite of buf_pool_t to
a proper class. Most of the buffer pool interface, such as
buf_page_get_gen(), will remain in the C programming style
for now.
buf_pool_t::withdrawing: Replaces buf_pool_withdrawing.
buf_pool_t::withdraw_clock_: Replaces buf_withdraw_clock.
buf_pool_t::create(): Repalces buf_pool_init().
buf_pool_t::close(): Replaces buf_pool_free().
buf_bool_t::will_be_withdrawn(): Replaces buf_block_will_be_withdrawn(),
buf_frame_will_be_withdrawn().
buf_pool_t::clear_hash_index(): Replaces buf_pool_clear_hash_index().
buf_pool_t::get_n_pages(): Replaces buf_pool_get_n_pages().
buf_pool_t::validate(): Replaces buf_validate().
buf_pool_t::print(): Replaces buf_print().
buf_pool_t::block_from_ahi(): Replaces buf_block_from_ahi().
buf_pool_t::is_block_field(): Replaces buf_pointer_is_block_field().
buf_pool_t::is_block_mutex(): Replaces buf_pool_is_block_mutex().
buf_pool_t::is_block_lock(): Replaces buf_pool_is_block_lock().
buf_pool_t::is_obsolete(): Replaces buf_pool_is_obsolete().
buf_pool_t::io_buf: Make default-constructible.
buf_pool_t::io_buf::create(): Delayed 'constructor'
buf_pool_t::io_buf::close(): Early 'destructor'
HazardPointer: Make default-constructible. Define all member functions
inline, also for derived classes.
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gtid_seq_no, preudo_thread_id, server_id, gtid_domain_id
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system variables
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Problem was that replace_dynstr_append_mem() assumed strings are
null terminated which is not always the case.
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'index_merge_sort_union=off'
When index_merge_sort_union is set to 'off' and index_merge_union is set
to 'on' then any evaluated index merge scan must consist only of ROR scans.
The cheapest out of such index merges must be chosen. This index merge
might not be the cheapest index merge.
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This was to remove a performance regression between 10.3 and 10.4
In 10.5 we will have a better implementation of records_in_range
that will enable us to get more statistics.
This change was not done in 10.4 because the 10.5 will be part of
a larger change that is not suitable for the GA 10.4 version
Other things:
- Changed default handler block_size to 8192 to fix things statistics
for engines that doesn't set the block size.
- Fixed a bug in spider when using multiple part const ranges
(Patch from Kentoku)
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It did not work, eventhough the default for Windows was changed to 1
for the corresponding system variable.
This be because test_flags was zeroed mysql_init_variables.
The patch fixes this glitch.
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binlog_row_image global and session variables
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sync_relay_log, sync_relay_log_info
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@@sql_log_bin
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mi_records_in_range(): Because HA_POS_ERROR cannot be accurately
represented in double (it will be off by one), add an explicit
cast to silence the warning.
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myrg_open(): Reduce the scope of the variable 'end' and
simplify the code.
For some reason, I got no warning for this code in the 10.2
branch, only 10.3 or later.
The ENGINE=MERGE is covered by the tests main.merge, main.merge_debug,
and main.merge-big.
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Problem:
=======
When we upgrade from "mysql" to "mariadb" if slave is using repositories as
tables their data is completely ignored and no warning is issued in error log.
Fix:
===
"mysql_upgrade" test should check for the presence of data in
"mysql.slave_master_info" and "mysql.slave_relay_log_info" tables. When tables
have some data the upgrade script should report a warning which hints users
that the data in repository tables will be ignored.
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_ma_fetch_keypage(): Correct an assertion that used to always hold.
Thanks to clang -Wint-in-bool-context for flagging this.
double_to_datetime_with_warn(): Suppress -Wimplicit-int-float-conversion
by adding a cast. LONGLONG_MAX converted to double will actually be
LONGLONG_MAX+1.
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All tablespace metadata is buffered in fil_system. There is a LRU
mechanism, but that only controls the opening and closing of
fil_node_t::handle.
It is much more efficient and less error-prone to access data file names
by looking up the fil_space_t object rather than by essentially joining
each row with an access to SYS_DATAFILES via the InnoDB internal SQL parser.
dict_get_first_path(): Declare static. The function may only be needed
when loading or updating the data dictionary. Also, change a condition
in order to avoid a bogus GCC 10 -Wstringop-overflow warning for
mem_strdupl() about len==ULINT_UNDEFINED.
i_s_sys_tablespaces_fill_table(): Do not access other InnoDB internal
dictionary tables than SYS_TABLESPACES.
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This fixes GCC 10.0.1 -Wstringop-truncation and some typos.
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Also, remove some trailing white space and add missing static
qualifier to free_annotate_event().
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actually, page_zip_verify_checksum() generally allows all-zeroes
checksums because our CRC32 checksum is something like
crc_1 ^ crc_2 ^ crc_3
Also, all zeroes page is considered correct.
As a side effect fix nasty reinterpret_cast<> UB
Also, since c0f47a4a5842 innodb_checksum_algorithm=full_crc32
exists which computes CRC32 in one go (without bitwise arithmetic)
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It was:
implicit conversion from 'ha_rows' (aka 'unsigned long long') to 'double'
changes value from 18446744073709551615 to 18446744073709551616
Follow what JOIN::get_examined_rows() does for similar code.
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Move function ut_crc32_swap_byteorder to a non-x86 #ifdef area.
As its only used in BIGENDIAN, use #ifdefs around
ut_crc32_swap_byteorder.
Travis CI and Debian both include s390x in builds/test, which is big endian.
Fixes commit: 1312b4ebb652
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Simplifying definitions on Sys_var_charptr*:
- Removing sys_var::is_os_charset
- Adding a new class Sys_var_charptr_fscs, to handle system
variables with character_set_filesystem.
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log_write_buf(): Remove the unused variable write_header.
The dependent code was removed in
commit 0c2365c4e3c89c3b284315e19a7d95221b524868.
That was dead or unnecessary code at least ever since
commit 9ef2d29ff44de2013c95666a011b993e5c2e5674
removed the support for innodb_log_files_in_group>1.
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log_t::has_encryption_key_rotation(): checks whether
key rotation is supported.
In a subsequent redo log format version, this key rotation
may be broken again.
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Write log header just ones when file is created, instead of
writing to it on every log file wrap around.
log_t::file::write_header_durable(): this one writes to log header
log_write_buf(): this one stops writing to log header
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move statistics modification into one place
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