database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-29 05:21:33 +03:00
Code Activity

MDEV-18450 Slaves wait shutdown

Browse Source 
The patches features an optional shutdown behavior to hold on until
after all connected slaves have been sent the last binlogged event.
The connected slave is one whose START SLAVE has been acknowledged and
that was not stopped since that though it could be technically
reconnecting in background.

The solution therefore disallows killing the dump thread until is has
found EOF of the latest binlog file.  It is up to the shutdown
requester (DBA) to set up a sufficiently large shutdown timeout value
for shudown to wait patiently until lagging behind slaves have been
synchronized. On the other hand if a specific slave needs exclusion
from synchronization the DBA would have to stop it manually which
would terminate its dump thread.

`mysqladmin shutdown' is extended with a `--wait_for_all_slaves' option
which translates to `SHUTDOW WAIT FOR ALL SLAVES' sql query
to enable the feature on the client side.

The patch also performs a small refactoring of the server shutdown
around close_connections() to introduce kill thread phases which
are two as of current.
This commit is contained in:
Sergey Vojtovich
2019-03-07 08:12:26 +04:00
committed by Andrei Elkin
parent e450527938
commit 3568427d11
19 changed files with 459 additions and 54 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
mysql-test/mysql-test-run.pl
View File

@ -4550,7 +4550,8 @@ sub extract_warning_lines ($$) {
qr/InnoDB: See also */,
qr/InnoDB: Cannot open .*ib_buffer_pool.* for reading: No such file or directory*/,
qr/InnoDB: Table .*mysql.*innodb_table_stats.* not found./,
qr/InnoDB: User stopword table .* does not exist./
qr/InnoDB: User stopword table .* does not exist./,
qr/Dump thread [0-9]+ last sent to server [0-9]+ binlog file:pos .+/
);