| Commit message (Collapse) | Author | Age | Files | Lines |
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AWS KMS plugin saves all key files under the root folder of data
directory. Increasing of the key IDs and key rotations will generate a
lot of key files under the root folder, looks messy and hard to
maintain the folder permission etc.
Now introduce a new plugin parameter `aws_key_management_keyfile_dir` to
define the directory for saving the key files for better maintenance.
Detailed parameter information as following:
```
VARIABLE_NAME: AWS_KEY_MANAGEMENT_KEYFILE_DIR
SESSION_VALUE: NULL
GLOBAL_VALUE: <Directory path>
GLOBAL_VALUE_ORIGIN: COMMAND-LINE
DEFAULT_VALUE:
VARIABLE_SCOPE: GLOBAL
VARIABLE_TYPE: VARCHAR
VARIABLE_COMMENT: Define the directory in which to save key files
for the AWS key management plugin. If not set,
the root datadir will be used
READ_ONLY: YES
COMMAND_LINE_ARGUMENT: REQUIRED
GLOBAL_VALUE_PATH: NULL
```
All new code of the whole pull request, including one or several files
that are either new files or modified ones, are contributed under the
BSD-new license. I am contributing on behalf of my employer Amazon Web
Services, Inc.
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This patch is the result of running
run-clang-tidy -fix -header-filter=.* -checks='-*,modernize-use-equals-default' .
Code style changes have been done on top. The result of this change
leads to the following improvements:
1. Binary size reduction.
* For a -DBUILD_CONFIG=mysql_release build, the binary size is reduced by
~400kb.
* A raw -DCMAKE_BUILD_TYPE=Release reduces the binary size by ~1.4kb.
2. Compiler can better understand the intent of the code, thus it leads
to more optimization possibilities. Additionally it enabled detecting
unused variables that had an empty default constructor but not marked
so explicitly.
Particular change required following this patch in sql/opt_range.cc
result_keys, an unused template class Bitmap now correctly issues
unused variable warnings.
Setting Bitmap template class constructor to default allows the compiler
to identify that there are no side-effects when instantiating the class.
Previously the compiler could not issue the warning as it assumed Bitmap
class (being a template) would not be performing a NO-OP for its default
constructor. This prevented the "unused variable warning".
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The main difference in code path between EQ_REF and REF is that for
REF we have to do an extra read_next on the index to check that there
is no more matching rows.
Before this patch we added a preference of EQ_REF by ensuring that REF
would always estimate to find at least 2 rows.
This patch adds the cost of the extra key read_next to REF access and
removes the code that limited REF to at least 2 rows. For some queries
this can have a big effect as the total estimated rows will be halved
for each REF table with 1 rows.
multi_range cost calculations are also changed to take into account
the difference between EQ_REF and REF.
The effect of the patch to the test suite:
- About 80 test case changed
- Almost all changes where for EXPLAIN where estimated rows for REF
where changed from 2 to 1.
- A few test cases using explain extended had a change of 'filtered'.
This is because of the estimated rows are now closer to the
calculated selectivity.
- A very few test had a change of table order.
This is because the change of estimated rows from 2 to 1 or the small
cost change for REF
(main.subselect_sj_jcl6, main.group_by, main.dervied_cond_pushdown,
main.distinct, main.join_nested, main.order_by, main.join_cache)
- No key statistics and the estimated rows are now smaller which cased
estimated filtering to be lower.
(main.subselect_sj_mat)
- The number of total rows are halved.
(main.derived_cond_pushdown)
- Plans with 1 row changed to use RANGE instead of REF.
(main.group_min_max)
- ALL changed to REF
(main.key_diff)
- Key changed from ref + index_only to PRIMARY key for InnoDB, as
OPTIMIZER_ROW_LOOKUP_COST + OPTIMIZER_ROW_NEXT_FIND_COST is smaller than
OPTIMIZER_KEY_LOOKUP_COST + OPTIMIZER_KEY_NEXT_FIND_COST.
(main.join_outer_innodb)
- Cost changes printouts
(main.opt_trace*)
- Result order change
(innodb_gis.rtree)
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Starting with commit baf276e6d4a44fe7cdf3b435c0153da0a42af2b6 (MDEV-19229)
the parameter innodb_undo_tablespaces can be increased from its
previous default value 0 while allowing an upgrade from old databases.
We will change the default setting to innodb_undo_tablespaces=3
so that the space occupied by possible bursts of undo log records
can be reclaimed after SET GLOBAL innodb_undo_log_truncate=ON.
We will not enable innodb_undo_log_truncate by default, because it
causes some observable performance degradation.
Special thanks to Thirunarayanan Balathandayuthapani for diagnosing
and fixing a number of bugs related to this new default setting.
Tested by: Matthias Leich, Axel Schwenke, Vladislav Vaintroub
(with both values of innodb_undo_log_truncate)
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The MDEV-25004 test innodb_fts.versioning is omitted because ever since
commit 685d958e38b825ad9829be311f26729cccf37c46 InnoDB would not allow
writes to a database where the redo log file ib_logfile0 is missing.
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This caused valgrind errors when using plugins.test_sql_service
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type 'int' in strings/dtoa.c
Fixing a few problems relealed by UBSAN in type_float.test
- multiplication overflow in dtoa.c
- uninitialized Field::geom_type (and Field::srid as well)
- Wrong call-back function types used in combination with SHOW_FUNC.
Changes in the mysql_show_var_func data type definition were not
properly addressed all around the code by the following commits:
b4ff64568c88ab3ce559e7bd39853d9cbf86704a
18feb62feeb833494d003615861b9c78ec008a90
0ee879ff8ac1b80cd9a963015344f5698a81f309
Adding a helper SHOW_FUNC_ENTRY() function and replacing
all mysql_show_var_func declarations using SHOW_FUNC
to SHOW_FUNC_ENTRY, to catch mysql_show_var_func in the future
at compilation time.
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it uses C client API, so needs RECOMPILE_FOR_EMBEDDED
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Allow passwordless login in addition to usual login with password, when
creating 'root' user during install.
The effect of that change is that "local administrators" group are
allowed to connect as root user. This is done via gssapi authentication
plugin.
Clients that are not aware of gssapi client plugin, can still login with
password credentials.
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