Another fix (work around MDEV-12699): Ensure that the 1234-byte
truncated page is all zero, so that after data file extension
pads the page with zeroes to full page size, the page will read
as a valid one (consisting of zero bytes only).
InnoDB was too eager to forget the open table (m_mysql_table=NULL)
and that caused it to try to open a table which was opened by the user
not FK-prelocked. The server didn't expect that.
After fixing this, it crashed in gcol.innodb_virtual_fk test, trying to
compute virtual columns for a table that didn't have them. Because
row_upd_store_row() was deleting a row from node->table, while computing
virtual columns in thr->prebuilt->m_mysql_table. Which wasn't necessarily
the same table, and might've not even had virtual columns, even if
node->table did.
When printing an expression, like a/(b*c), we need to print parentheses,
even though / and * have the same precedence. Basically, we should
always treat the second argument as having one level higher precedence
than it normally is.
multi-update first runs a select to find affected rows, then performs
a separate update step. On the second step WITH CHECK OPTION rows
are read with rnd_read, but the first step might've been done with
keyread.
keyread over indexed virtual columns only reads the column's value, not
dependent base columns. This is reflected in the read_set too. But on
the rnd_read step base columns must be read - thus we need to update the
read_set before doing updates.
SQL Standard (4.23.3.4 Table check constraints, part 2, SQL:2016) says
that CHECK constraint rejects rows *only* if the condition is FALSE.
That is, both TRUE and NULL should be allowed.
The $result variable was supposed to accumulate failures from
all mysqltest processes (that analyzed all error logs in parallel).
But it was mistakenly put in the loop, so it was reset for each process.
When slow innodb shutdown is requested, thd_destructor_proxy waits
for all transactions to end, for trx_sys_any_active_transactions() == 0,
and then signals purge threads to exit.
But purge threads own THDs, and these THDs may own transactions too.
On shutdown they'll be idle (TRX_STATE_NOT_STARTED), though, so
let's skip idle transactions in trx_sys_any_active_transactions().
mariadb-client-core-10.2, mariadb-client-10.2, and
mariadb-server-core-10.2 should not depend on libmariadb3 - they
do not have any binaries dynamically linked with libmariadb3.so
The symlink
/usr/lib/libmysqlclient.so -> /usr/lib/libmysqlclient.so.18
was invalid, because the library was not in /usr/lib.
The correct symlink is
/usr/lib/x86_64-linux-gnu/libmysqlclient.so -> /usr/lib/x86_64-linux-gnu/libmysqlclient.so.18
put libmariadbclient18 symlinks into libmariadbclient18.deb package,
not into libmariadb3.deb, because installing/reinstalling
libmariadbclient18.deb must recreate these symlinks.
Optimizing cascade node list traversal, which could turn out as
performance bottleneck
Even this current cascade node check could be skipped, but a dedicated
mtr test is needed to confirm that
Optimizing cascade node list traversal, which could turn out as
performance bottleneck
Even this current cascade node check could be skipped, but a dedicated
mtr test is needed to confirm that
* created tests focusing in multi-master conflicts during cascading foreign key
processing
* in row0upd.cc, calling wsrep_row_ups_check_foreign_constraints only when
running in cluster
* in row0ins.cc fixed regression from MW-369, which caused crash with MW-402.test
