MDEV-27107 prevent two mariadb-upgrade running in parallel
MDEV-27279 mariadb_upgrade add --check-if-upgrade-is-needed /
restrict tests to major version
Code is based of pull request from Daniel Black, but with a several
extensions.
- mysql_upgrade now locks the mysql_upgrade file with my_lock()
(Advisory record locking). This ensures that two mysql_upgrades
cannot be run in parallel.
- Added --check-if-upgrade-is-needed to mysql_upgrade. This will return
0 if one has to run mysql_upgrade.
Other changes:
- mysql_upgrade will now immediately exit if the major version and minor
version (two first numbers in the version string) is same as last run.
Before this change mysql_upgrade was run if the version string was different
from last run.
- Better messages when there is no need to run mysql_upgrade.
- mysql_upgrade --verbose now prints out a lot more information about
the version checking.
- mysql_upgrade --debug now uses default debug arguments if there is no
option to --debug
- "MySQL" is renamed to MariaDB in the messages
- mysql_upgrade version increased to 2.0
Notes
Verifying "prevent two mariadb-upgrade running in parallel" was
done in a debugger as it would be a bit complex to do that in mtr.
Reviewer: Danial Black <daniel@mariadb.org>
This enables optimizer_trace output for the next SQL command.
Identical as if one would have done:
- Store value of @@optimizer_trace
- Set @optimizer_trace="enabled=on"
- Run query
- SELECT * from OPTIMIZER_TRACE
- Restore value of @@optimizer_trace
This is a great time saver when one wants to quickly check the optimizer
trace for a query in a mtr test.
https://jira.mariadb.org/browse/MDEV-26221
my_sys DYNAMIC_ARRAY and DYNAMIC_STRING inconsistancy
The DYNAMIC_STRING uses size_t for sizes, but DYNAMIC_ARRAY used uint.
This patch adjusts DYNAMIC_ARRAY to use size_t like DYNAMIC_STRING.
As the MY_DIR member number_of_files is copied from a DYNAMIC_ARRAY,
this is changed to be size_t.
As MY_TMPDIR members 'cur' and 'max' are copied from a DYNAMIC_ARRAY,
these are also changed to be size_t.
The lists of plugins and stored procedures use DYNAMIC_ARRAY,
but their APIs assume a size of 'uint'; these are unchanged.
This is a documentation-only patch to refine the description of
binary mode for the mariadb client.
Reviewed By:
============
Andrei Elkin <andrei.elkin@mariadb.com>
Note: This patch backports commits 10cd281 and 1755ea4 from 10.3.
10cd281:
Problem:- Some binary data is inserted into the table using
Jconnector. When binlog dump of the data is applied using mysql
client it gives syntax error.
Reason:-
After investigating it turns out to be a issue of mysql client not
able to properly handle \\0 <0 in binary>. In all binary files
where mysql client fails to insert
these 2 bytes are common (0x5c00)
Solution:-
I have changed mysql.cc to include for the possibility that binary
string can have \\0 in it
1755ea4:
Changes on top of Sachin’s patch. Specifically:
1) Refined the parsing break condition to only change the parser’s
behavior for parsing strings in binary mode (behavior of \0 outside
of strings is unchanged).
2) Prefixed binary_zero_insert.test with ‘mysql_’ to more clearly
associate the purpose of the test.
3) As the input of the test contains binary zeros (0x5c00),
different text editors can visualize this sequence differently, and
Github would not display it at all. Therefore, the input itself was
consolidated into the test and created out of hex sequences to make
it easier to understand what is happening.
4) Extended test to validate that the rows which correspond to the
INSERTS with 0x5c00 have the correct binary zero data.
Reviewed By:
============
Andrei Elkin <andrei.elkin@mariadb.com>
Changes on top of Sachin’s patch. Specifically:
1) Refined the parsing break condition to only change the parser’s
behavior for parsing strings in binary mode (behavior of \0 outside
of strings is unchanged).
2) Prefixed binary_zero_insert.test with ‘mysql_’ to more clearly
associate the purpose of the test.
3) As the input of the test contains binary zeros (0x5c00),
different text editors can visualize this sequence differently, and
Github would not display it at all. Therefore, the input itself was
consolidated into the test and created out of hex sequences to make
it easier to understand what is happening.
4) Extended test to validate that the rows which correspond to the
INSERTS with 0x5c00 have the correct binary zero data.
Reviewed By:
===========
Andrei Elkin <andrei.elkin@mariadb.com>
Problem:- Some binary data is inserted into the table using Jconnector. When
binlog dump of the data is applied using mysql cleint it gives syntax error.
Reason:-
After investigating it turns out to be a issue of mysql client not able to properly
handle \\\0 <0 in binary>. In all binary files where mysql client fails to insert
these 2 bytes are commom (0x5c00)
Solution:-
I have changed mysql.cc to include for the possibility that binary string can
have \\\0 in it
Per review by Serg, include start row with new line.
We are hoping we haven't annoyed people that prefered the old
way.
Adding an option for new lines seems like over-engineering in advance.
So if there are complaints, let them be known (JIRA), and we'll add
this under an option.
Test cases updated.
Currently, mysqldump --extended-insert outputs all rows on a single line,
which makes it difficult to use with various Unix command-line utilities
such as grep and diff.
We change mysqldump to emit a linebreak between each row, that would make
it easier to work with, without significantly affecting dump or restore
performance, or affecting compatibility.
Closes: #1865
Create minidump when server fails to shutdown. If process is being
debugged, cause a debug break.
Moves some code which is part of safe_kill into mysys, as both safe_kill,
and mysqltest produce minidumps on different timeouts.
Small cleanup in wait_until_dead() - replace inefficient loop with a single
wait.
instead of original name of the column
When doing refactoring of temporary table field creation a mistake was
done when copying the column name when creating internal temporary tables.
For internal temporary tables we should use the original field name, not
the item name (= alias).
