Was added in 10.5.2 (MDEV-21975)

A few of the failures was because of missing sync_slave_to_master in
the test suite.

However, the biggest reason for most faulures was that in case of
ALTER PARTITION the master writes the query to the binary log before
it has updated the .frm and .par files. This causes a problem for an
S3 slave as it will start execute the ALTER PARTITION but get old .frm and
.par files from S3 which causes "open table" to fail, either with an error
or in some case with a crash.
Fixed

This allow one to remove some casts like:
maria_data_root= (char *)".";

It also removes warnings from icc.

One should not change the program arguments!
This change also reduces warnings from the icc compiler.

Almost all changes are just syntax changes (adding const to
'get_one_option function' declarations).

Other changes:
- Added a few cast of 'argument' from 'const char*' to 'char *'. This
  was mainly in calls to 'external' functions we don't have control of.
- Ensure that all reset of 'password command line argument' are similar.
  (In almost all cases it was just adding a comment and a cast)
- In mysqlbinlog.cc and mysqld.cc there was a few cases that changed
  the command line argument. These places where changed to instead allocate
  the option in a MEM_ROOT to avoid changing the argument. Some of this
  code was changed to ensure that different programs did parsing the
  same way. Added a test case for the changes in mysqlbinlog.cc
- Changed a few variables that took their value from command line options
  from 'char *' to 'const char *'.

The condition variables that were introduced in
commit 7cffb5f6 (MDEV-23399)
are never instrumented with PERFORMANCE_SCHEMA.
Let us avoid the storage overhead and dead code.

The test case was setting aria_sort_buffer_size to MAX_ULONGLONG-1
which was not handled gracefully by my_malloc() or safemalloc().
Fixed by ensuring that the malloc functions returns 0 if the size
is too big.
I also added some protection to Aria repair:
- Limit sort_buffer_size to 16G (after that a bigger sort buffer will
  not help that much anyway)
- Limit sort_buffer_size also according to sort file size. This will
  help by not allocating less memory if someone sets the buffer size too
  high.

This is caused by commit c92f7e28(MDEV-8139).
InnoDB fails to set the page status as FREED in buffer pool while freeing
the extent.

With the fix, new connection without THDs will now show NULL in
thread_pool_queues.CONNECTION_ID.

filter out tpool

ha_innobase::commit_inplace_alter_table(): Fix a regression that was
introduced in 6d1f1b61 (MDEV-24564).

Also update the SEL_ARG graph weight in:
- sel_add()
- SEL_ARG::clone()

Make key_{and,or}_with_limit() to also verify weight for the arguments
(There is no single point to verify SEL_ARG graphs constructed from
conditions that are not AND-OR formulas, so we hope that those are
connected with AND/OR and do it here).

The purpose of the test was to ensure that the SX (update) mode of
index tree and buffer page latches are being used.

The test has become unstable, possibly due to changes related to
buf_pool.mutex and buf_pool.page_hash, or to the use of MDL in the
purge of transaction history.

In 10.6, the test depends on instrumentation that was refactored
or removed in MDEV-24142.

The use of different latching modes can better be indirectly observed
through high-concurrency benchmarks. For MDEV-14637, a performance test
was conducted where the finer-grained latching and
BTR_CUR_FINE_HISTORY_LENGTH were removed. It caused a 20% performance
regression for UPDATE and somewhat smaller for INSERT.

Any new problem with latching granularity should be easily caught by
performance testing, or by stress tests with Random Query Generator.

There are no IO threads anymore.

(Variant #5, full patch, for 10.5)

Do not produce SEL_ARG graphs that would yield huge numbers of ranges.
Introduce a concept of SEL_ARG graph's "weight". If we are about to
produce a graph whose "weight" exceeds the limit, remove the parts
of SEL_ARG graph that represent the biggest key parts. Do so until
the graph's is within the limit.

Includes
- debug code to verify SEL_ARG graph weight
- A user-visible @@optimizer_max_sel_arg_weight to control the optimization
- Logging the optimization into the optimizer trace.

The implementation for MDEV-17048 apperas to be direct copy from mysql version.
The group commit works differently in mariadb and the assert in wsrep_unregister_from_group_commit() is too strict.

The reason is that in: Wsrep_high_priority_service::log_dummy_write_set(), the transaction will undergo full rollback:
    {
      cs.before_rollback();
      cs.after_rollback();
    }

After that, the client's transaction state is set to be:  wsrep::transaction::s_aborted.
The execution then continues execution by:

...
 wsrep_register_for_group_commit(m_thd);
...
 wsrep_unregister_from_group_commit(m_thd);

The bogus assert in wsrep_unregister_from_group_commit() allows only transactions states of :s_ordered_commit or s_aborting.

As the fix, I brought back the same assert as is present in MariaDB 10.4 version.

a. The change makes `mariadb-upgrade` detect if `MYSQL_JSON` data type is needed.
b. Install the data type if it's not installed.
c. Uninstalls the data type once finished.
d. Create `.opt` and `.inc` files `have_type_mysql_json` and adapt the
tests

Reviewed by: vicentiu@mariadb.org

Ever since commit 007f68c3,
ALTER TABLE no longer invokes handler::open() after
handler::commit_inplace_alter_table().

ha_innobase::reload_statistics(): Reload or recompute statistics
after ALTER TABLE.

innodb_notify_tabledef_changed(): A new function to invoke
ha_innobase::reload_statistics().

handlerton::notify_tabledef_changed(): Add the parameter handler*
so that ha_innobase::reload_statistics() can be invoked.

ha_partition::notify_tabledef_changed(),
partition_notify_tabledef_changed(): Pass through the call
to any partitions or subpartitions.

This is based on code that was supplied by Monty.

The check is added.

During recovery, InnoDB fails if it tries to apply a FREE_PAGE
and WRITE record to the page. InnoDB encryption thread accesses
the freed page and writes redo log for it.

This is similar to commit deadec4e (MDEV-24569)
InnoDB is missing buf_page_free() while freeing the segment.
To avoid accessing of freed page in buffer pool, InnoDB should
mark the pages as FREED while freeing the segment. Also to
avoid reading of freed page, InnoDB should check the
allocation bitmap page.

fseg_free_step(): Mark the page in buffer pool as FREED

fseg_free_step_not_header(): Mark the page in buffer pool as FREED

buf_dump(): Ignore the freed pages while dumping the buffer pool content

fil_crypt_get_page_throttle_func(): Skip the rotation for FREED page
to avoid the assert failure during recovery

fil_crypt_rotate_page(): Skip the rotation for the freed page

Reviewed-by: Marko Mäkelä

MDEV-24693 LeakSanitizer: detected memory leaks in mem_heap_create_block_func / fts_optimize_create_msg

- This issue is caused by the commit bf1f9b59
(MDEV-24638). Delay the creation of SYNC message in
fts_optimize_request_sync_table. So that InnoDB can avoid creating
the message if the table already has SYNC message in fts_optimize_wq queue

* galera
* galera_sr
* galera_3nodes

Correct test.

the top level

We may end up with an empty leaf page (containing only an ADD COLUMN
metadata record) that is not the root page.

innobase_add_instant_try(): Disable an optimization for a non-canonical
empty table that contains a metadata record somewhere else than in
the root page.

btr_pcur_store_position(): Tolerate a non-canonical empty table.

MDEV-24659 Assertion !fsp_is_system_temporary(bpage->id().space()) failed in buf_flush_relocate_on_flush_list()

When commit 5eb53955 (MDEV-12227)
removed the pages of temporary tables from the buf_pool.flush_list,
an adjustment to the buffer pool resizing was forgotten.

buf_pool_t::realloc(): Do not invoke buf_flush_relocate_on_flush_list()
for pages that belong to the temporary tablespace. Also, deduplicate
some code at the end.

buf_page_t::set_corrupt_id(): Tolerate oldest_modification()==1
(the dummy value) for temporary tablespace pages. The revised
buf_pool_t::realloc() may invoke this on dirty temporary tablespace pages.

Ever since commit 947efe17
InnoDB no longer writes binlog position in one place.
It will not at all be written to the TRX_SYS page, and
instead it will be written to the undo log header page that
changes the transaction state.

trx_rseg_mem_restore(): Recover the information from the latest
written page.

fts_optimize_request_sync_table() can avoid the repetitive
FTS SYNC request of the table if the table already has FTS_SYNC
message in fts_optimize_wq queue.

Reviewed-by: Marko Mäkelä