- Removed commented out and unused lines.
- Updated test to reference true failure of timeout
  rather than deadlock
- Switched save variables from MTR to user
- Forced relay-log purge to not potentially re-execute
  an already prepared transaction

buf_read_page_low(): Use 64-bit arithmetics when computing the
file byte offset. In other calls to fil_space_t::io() the offset
was being computed correctly, for example by
buf_page_t::physical_offset().

MariaDB async replication SQL thread was stopped for any failure
in applying of replication events and error message logged for the failure
was: "Node has dropped from cluster". The assumption was that event applying
failure is always due to node dropping out.
With optimistic parallel replication, event applying can fail for natural
reasons and applying should be retried to handle the failure. This retry
logic was never exercised because the slave SQL thread was stopped with first
applying failure.

To support optimistic parallel replication retrying logic this commit will
now skip replication slave abort, if node remains in cluster (wsrep_ready==ON)
and replication is configured for optimistic or aggressive retry logic.

During the development of this fix, galera.galera_as_slave_nonprim test showed
some problems. The test was analyzed, and it appears to need some attention.
One excessive sleep command was removed in this commit, but it will need more
fixes still to be fully deterministic. After this commit galera_as_slave_nonprim
is successful, though.
Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>

Some s390x environments include
https://github.com/madler/zlib/pull/410
and a more pessimistic compressBound: (sourceLen * 16 + 2308) / 8 + 6.
Let us adjust the recently enabled tests accordingly.

trx_undo_write_trx_xid(): Silence the debug assertion by passing
a template parameter that causes us to not care that the contents of
the page did not actually change and no log record would be written.
This debug assertion could fail if XA PREPARE was executed multiple
times with the same XID.

innodb_monitor_validate(): Let item_val_str() allocate the memory
in THD, so that it will be available to innodb_monitor_update().
In this way, there is no need to allocate another buffer, and
no problem if the call to innodb_monitor_update() is skipped due
to an invalid value that is passed to another configuration parameter.

There are some other callers to st_mysql_sys_var::val_str()
that validate configuration parameters that are related to FULLTEXT INDEX,
but they will allocate memory by invoking thd_strmake().

Currently include/have_innodb_4k.inc etc. files only check that the
server is running with the corresponding page size. I think it would
be more convenient if they actually enforced the setting.

The test innodb_zip.index_large_prefix_4k would not run unless it is
invoked as
./mtr --mysqld=--innodb-page-size=4k innodb_zip.index_large_prefix_4k

This test was originally developed to cover an option that was removed
in commit 0c92794d. Starting with
MariaDB Server 10.2, which introduced innodb_default_row_format=dynamic,
the option innodb_large_prefix had become useless.

Let us remove some of the stale tests and adjust the outcome to the
expected behaviour.

Let us avoid inserting the rows fid=714 and fid=715, because we would
evaluate g=NULL for them, and NULL values are not allowed in InnoDB
SPATIAL INDEX.

Also, let the test run on any page size, and on non-debug builds.

and "Undefined subroutine &Manager::move"

from upstream

to follow the similar upstream change

-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

ibuf_set_bitmap_for_bulk_load(): Port a bug fix that was made as part of
commit 165564d3 (MDEV-30009)
in MariaDB Server 10.5.19.

Port the test case from MySQL to MariaDB:

MySQL fix Bug#33813951, Change-Id: I2448e3f2f36925fe70d882ae5681a6234f0d5a98.

Function test_simple_temporal() from MySQL ported from C++ to pure C.

This includes one change:
-  DIE_UNLESS(field->type == MYSQL_TYPE_DATETIME);
+  DIE_UNLESS(field->type == MYSQL_TYPE_TIMESTAMP);

The bound param of SELECT ? is TIMESTAMP in this code.
MySQL returns it back as DATETIME. MariaDB preserves TIMESTAMP.

Code packaged for commit by Daniel Black.

The problem was that parallel replication of temporary tables using
statement-based binlogging could overlap the COMMIT in one thread with a DML
or DROP TEMPORARY TABLE in another thread using the same temporary table.
Temporary tables are not safe for concurrent access, so this caused
reference to freed memory and possibly other nastiness.

The fix is to disable the optimisation with overlapping commits of one
transaction with the start of a later transaction, when temporary tables are
in use. Then the following event groups will be blocked from starting until
the one using temporary tables is completed.

This also fixes occasional test failures of rpl.rpl_parallel_temptable seen
in Buildbot.
Signed-off-by: Kristian Nielsen <knielsen@knielsen-hq.org>

recalculate long unique hash in Write_rows_log_event
and Update_rows_log_event.

normally generated columns (stored and indexed virtual)
are deterministic and their values don't need to be recalculated
on the slave as they're already present in the row image.
but the long unique hash function was changed in MDEV-27653,
so a row event from the old master will have the old hash,
but a table created on the new slave will need a new hash.

test case only

don't enable bulk insert when table->s->long_unique_table

as always when copying record[0] aside one needs to detach
Field_blob::value's from it, and restore them when record[0]
is restored from a backup.

clarify the help text

move user/group creation from %post to %pre as Fedora packaging
guidelines say. This allows to use %attr() to set the correct
ownership of files

MDEV-17711 Assertion `arena_for_set_stmt== 0' failed in LEX::set_arena_for_set_stmt upon SET STATEMENT

restore SET STATEMENT variables between statements in a multi-statement

compaitibility with:
* chacha - mobile devices
* secure negotiation - openssl 3

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

The problem is in manager/worker communication when worker sends
WARNINGS and then TESTRESULT. If manager yet didn't read WARNINGS
response both responses get into the same buffer, can_read() will
indicate we have data only once and we must read all the data from the
socket at once. Otherwise TESTRESULT response is lost and manager
waits it forever.

The fix now instead of single line reads the socket in a loop. But if
there is only one response in the buffer the second read will be
blocked waiting until new data arrives. That can be overcame by
blocking(0) which sets the handle into non-blocking mode. If there is
no data second read just returns undef.

The problem is non-blocking mode is not supported by all perl flavors
on Windows. Strawberry and ActiveState do not support it. Cygwin and
MSYS2 do support. There is some ioctl() hack that was known to "work"
but it doesn't do what is expected (it does not return data when there
is data). So for Windows if it is not Cygwin we disable the fix.

MSYS2 is basically Cygwin, except it has more easy installation (but
with tools which are not used) and it has some more control of path
conversion via MSYS2_ARG_CONV_EXCL and MSYS2_ENV_CONV_EXCL. So it
should be more Windows-friendly than Cygwin.

Installation

Similar to Cygwin, except installing patch requires additional command
run from shell:

    pacman -S patch

MSYS2 still doesn't work as it returns wierd "Bad address" when
exec-ing forked process from create_process(). Same exec from
standalone perl -e runs just fine... :(

Cygwin is more Unix-oriented. It does not treat \n as \r\n in regexps
(fixed by \R), it supplies Unix-style paths (fixed by
mixed_path()). It does some cleanup on paths when running exe, so it
will be different in exe output (like with $exe_mysqld, comparing
basename() is enough).

Cygwin installation

1. Just install latest perl version (only base package) and
   patchutils from cygwin-setup;
2. Don't forget to add c:\cygwin64\bin into system path
   before any other perl flavors;
3. There is path-style conflict (see below), you must replace
   c:\cygwin64\bin\sh.exe with the wrapper. Run MTR with
   --cygwin-subshell-fix=do for that. Make sure you are running Cygwin
   perl for the option to work.
4. Restart buildbot via net stop buildbot; net start buildbot

Path-style conflict of Cygwin-ish Perl

Some exe paths are passed to mysqltest which are executed by a native
call. This requires native-style paths (\-style). These exe paths also
executed by Perl itself. Either by MTR itself which is not so
critical, but also by tests' --perl blocks which is impossible to
change. And if Perl detects shell-expansion or uses pipe command it
passess this exe path to /bin/sh which is Cygwin-compiled bash that
cannot work with \-style (or at least in -c processing). Thus we require
\-style on some parts of MTR execution and /-style on another parts.

The examples of tests which cover these different parts are:

    main.mysqlbinlog_row_compressed \
    main.sp_trans_log

That could be great to force Perl to use something different from
/bin/sh, but unfortunately /bin/sh is compiled-in into binary. So the
only solution left is to overwrite /bin/sh with some wrapper script
which passes the command to cmd.exe instead of bash.

See "Path-style conflict" in "MDEV-30836 MTR Cygwin fix" for explanation.

To install subshell fix use --cygwin-subshell-fix=do
To uninstall use --cygwin-subshell-fix=remove

This works only from Cygwin environment. As long as perl on PATH is
from Cygwin you are on Cygwin environment. Check it with

     perl --version

     This is perl 5, version 36, subversion 1 (v5.36.1) built for
     x86_64-cygwin-threads-multi

run_test_server() is actually manager main loop. We move out this
function into Manager package and split into run() and
parse_protocol(). The latter is needed for the fix. Moving into
separate package helps to make some common variables which was local
to run_test_server().

Functions from the main package is now prefixed with main:: (should be
reorganized somehow later or auto-imported).

1. Better logging and error reporting;
2. Worker process title;
3. Some comments

Worker process title example:

 446209 pts/2    R+     0:00 mysql-test-run.pl worker[01] :42146 -> :35027 versioning.view
 446210 pts/2    S+     0:00 mysql-test-run.pl worker[02] :42150 -> :35027 versioning.view
 446211 pts/2    S+     0:00 mysql-test-run.pl worker[03] :42154 -> :35027 versioning.foreign
 446212 pts/2    S+     0:00 mysql-test-run.pl worker[04] :42160 -> :35027 versioning.autoinc

Manager-worker localhost socket connection is represented by a pair :source -> :destination ports.

-vv Now adds --verbose to mysqltest as well, see var/mysqltest.log for the output.

Create test for for case insensitive gives a basic warning on creating
a test file and the next thing a user might see is an abort.

ProtectHome and other systemd setting protect system services from
accessing user data. Unfortunately some of our users do put things
on /home due space or other reasons.

Rather than enumberate the systemd options in a very clunkly fragile
way we put an error associated with the "Can't create test file" and
hope the user can work it out from there.

%M tip thanks Sergei.

Fixed memory leak taken place on executing a prepared statement or
a stored routine that querying a view and this view constructed
on an information schema table. For example,

Lets consider the following definition of the view 'v1'
CREATE VIEW v1 AS SELECT table_name FROM information_schema.views
ORDER BY table_name;

Querying this view in PS mode result in hit of assert.
PREPARE stmt FROM "SELECT * FROM v1";
EXECUTE stmt;
EXECUTE stmt; (*)

Running the statement marked with (*) leads to a crash in case
server build with mode to control allocation of a memory from SP/PS
memory root on the second and following executions of PS/SP.

The reason of leaking the memory is that a memory allocated on
processing of FRM file for the view requested from a PS/PS memory
root meaning that this memory be released only when a stored routine
be evicted from SP-cache or a prepared statement be deallocated
that typically happens on termination of a user session.

To fix the issue switch to a memory root specially created for
allocation of short-lived objects that requested on parsing FRM.

In case a table accessed by a PS/SP is dropped after the first execution of
PS/SP and a view created with the same name as a table just dropped then
the second execution of PS/SP leads to allocation of a memory on SP/PS
memory root already marked as read only on first execution.

For example, the following test case:
CREATE TABLE t1 (a INT);
PREPARE stmt FROM "INSERT INTO t1 VALUES (1)";
EXECUTE stmt;
DROP TABLE t1;
CREATE VIEW t1 S SELECT 1;
--error ER_NON_INSERTABLE_TABLE
EXECUTE stmt; # (*)
DROP VIEW t1;

will hit assert on running the statement 'EXECUTE stmt' marked with (*)
when allocation of a memory be performed on parsing the view.

Memory allocation is requested inside the function mysql_make_view
when a view definition being parsed. In order to avoid an assertion
failure, call of the function mysql_make_view() must be moved after
invocation of the function check_and_update_table_version().
It will result in re-preparing the whole PS statement or current
SP instruction that will free currently allocated items and reset
read_only flag for the memory root.