mariadb/mysql-test
Aleksey Midenkov 05e7e62bfc MDEV-33633 Trigger tries to access already dropped view
Trigger has its own LEX which stores query_tables. When trigger table
v1 is successfully opened it is the same TABLE_LIST from query_tables
and it retains all the view properties nonetheless v1 is now not view.

The fix detects if there are outdated view properties: on
TABLE::init() we assume table is plain table, and if so we clear these
properties.

On the opposite if the new view is different we disable such DML until
the view is flushed because there may be invalid behavior otherwise:
when the new view behaves like the old one because triggers was not
updated. It is hard to link back the triggers from view to update the
corresponding triggers and there is performance threat because one
view may be used in unlimited amount of triggers. So the simplest
solution is to disable DML and require a manual flush.

DML is disabled via reprepare_observer which forces
check_and_update_table_version() to fail in case the share version is
different from the trigger version. We have to put that before the
mysql_make_view() to avoid PROTECT_STATEMENT_MEMROOT failure: repeated
execution of trigger under new view leads mysql_make_view() to do more
allocations. That does not happen for plain SP because sp cache is
flushed in mysql_create_view(), but this does not apply to triggers
which do not use sp cache.

Thanks to Sergei Golubchik <serg@mariadb.org> for the patch idea.
2025-06-30 17:04:51 +03:00
..
collections
include MDEV-36848: identify tests with various MSAN suitability 2025-05-28 16:33:49 +10:00
lib Merge branch '10.5' into 10.6 2025-01-29 11:17:38 +01:00
main MDEV-33633 Trigger tries to access already dropped view 2025-06-30 17:04:51 +03:00
std_data MDEV-36740: galera.galera_ssl_upgrade fails due to expired certificate 2025-05-20 12:33:36 +02:00
suite MDEV-29157 SELECT using ror_merged scan fails with s3 tables 2025-06-02 14:02:53 +03:00
asan.supp
CMakeLists.txt Merge branch '10.5' into 10.6 2025-03-31 12:12:50 +02:00
dgcov.pl
lsan.supp
mariadb-stress-test.pl
mariadb-test-run.pl MDEV-36226 Stall and crash when page cleaner fails to generate free pages during Async flush 2025-03-31 19:09:23 +05:30
mtr.out-of-source
purify.supp
README
README-gcov
README.stress
suite.pm Merge 10.5 into 10.6 2024-10-03 09:31:39 +03:00
valgrind.supp

This directory contains test suites for the MariaDB server. To run
currently existing test cases, execute ./mysql-test-run in this directory.

Some tests are known to fail on some platforms or be otherwise unreliable.
In the file collections/smoke_test there is a list of tests that are
expected to be stable.

In general you do not have to have to do "make install", and you can have
a co-existing MariaDB installation, the tests will not conflict with it.
To run the tests in a source directory, you must do "make" first.

In Red Hat distributions, you should run the script as user "mysql".
The user is created with nologin shell, so the best bet is something like
  # su -
  # cd /usr/share/mysql-test
  # su -s /bin/bash mysql -c ./mysql-test-run

This will use the installed MariaDB executables, but will run a private
copy of the server process (using data files within /usr/share/mysql-test),
so you need not start the mysqld service beforehand.

You can omit --skip-test-list option if you want to check whether
the listed failures occur for you.

To clean up afterwards, remove the created "var" subdirectory, e.g.
  # su -s /bin/bash - mysql -c "rm -rf /usr/share/mysql-test/var"

If tests fail on your system, please read the following manual section
for instructions on how to report the problem:

https://mariadb.com/kb/en/reporting-bugs

If you want to use an already running MySQL server for specific tests,
use the --extern option to mysql-test-run. Please note that in this mode,
you are expected to provide names of the tests to run.

For example, here is the command to run the "alias" and "analyze" tests
with an external server:

  # mysql-test-run --extern socket=/tmp/mysql.sock alias analyze

To match your setup, you might need to provide other relevant options.

With no test names on the command line, mysql-test-run will attempt
to execute the default set of tests, which will certainly fail, because
many tests cannot run with an external server (they need to control the
options with which the server is started, restart the server during
execution, etc.)

You can create your own test cases. To create a test case, create a new
file in the main subdirectory using a text editor. The file should have a .test
extension. For example:

  # xemacs t/test_case_name.test

In the file, put a set of SQL statements that create some tables,
load test data, and run some queries to manipulate it.

Your test should begin by dropping the tables you are going to create and
end by dropping them again. This ensures that you can run the test over
and over again.

If you are using mysqltest commands in your test case, you should create
the result file as follows:

  # mysql-test-run --record test_case_name

  or

  # mysqltest --record < t/test_case_name.test

If you only have a simple test case consisting of SQL statements and
comments, you can create the result file in one of the following ways:

  # mysql-test-run --record test_case_name

  # mysql test < t/test_case_name.test > r/test_case_name.result

  # mysqltest --record --database test --result-file=r/test_case_name.result < t/test_case_name.test

When this is done, take a look at r/test_case_name.result.
If the result is incorrect, you have found a bug. In this case, you should
edit the test result to the correct results so that we can verify that
the bug is corrected in future releases.

If you want to submit your test case you can send it
to developers@lists.mariadb.org or attach it to a bug report on
http://mariadb.org/jira/.

If the test case is really big or if it contains 'not public' data,
then put your .test file and .result file(s) into a tar.gz archive,
add a README that explains the problem, ftp the archive to
ftp://ftp.mariadb.org/private and submit a report to
https://mariadb.org/jira about it.

The latest information about mysql-test-run can be found at:
https://mariadb.com/kb/en/mariadb/mysqltest/

If you want to create .rdiff files, check
https://mariadb.com/kb/en/mariadb/mysql-test-auxiliary-files/