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author | Monty <monty@mariadb.org> | 2018-10-09 18:55:18 +0300 |
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committer | Monty <monty@mariadb.org> | 2018-12-09 22:12:25 +0200 |
commit | 163b34fe25919b25ff83860f30f2440b44c8b53b (patch) | |
tree | 7d21575247bdba318889ad4bc650028e59549781 /mysql-test/main/flush.test | |
parent | 306b7a2243eb3c3e8dcc567ef6d4e7e50dca21a4 (diff) | |
download | mariadb-git-163b34fe25919b25ff83860f30f2440b44c8b53b.tar.gz |
Optimize flush tables with read lock (FTWRL) to not wait for select's
Part of MDEV-5336 Implement LOCK FOR BACKUP
The idea is that instead of waiting in close_cached_tables() for all
tables to be closed, we instead call flush_tables() that does:
- Flush not used objects in table cache to free memory
- Collect all tables that are open
- Call HA_EXTRA_FLUSH on the objects, to get them into "closed state"
- Added HA_EXTRA_FLUSH support to archive and CSV
- Added multi-user protection to HA_EXTRA_FLUSH in MyISAM and Aria
The benefit compared to old code is:
- FTWRL doesn't have to wait for long running read operations or
open HANDLER's
Diffstat (limited to 'mysql-test/main/flush.test')
-rw-r--r-- | mysql-test/main/flush.test | 15 |
1 files changed, 1 insertions, 14 deletions
diff --git a/mysql-test/main/flush.test b/mysql-test/main/flush.test index 51b5c48c137..d626abf8880 100644 --- a/mysql-test/main/flush.test +++ b/mysql-test/main/flush.test @@ -566,17 +566,7 @@ create table t2 (i int); handler t1 open; connection con1; ---echo # Sending: ---send flush tables with read lock - -connection con2; ---echo # Wait until FTWRL starts waiting for 't1' to be closed. -let $wait_condition= - select count(*) = 1 from information_schema.processlist - where state = "Waiting for table flush" - and info = "flush tables with read lock"; ---source include/wait_condition.inc - +flush tables with read lock; connection default; --echo # The below statement should not cause deadlock. --echo # Sending: @@ -591,9 +581,6 @@ let $wait_condition= --source include/wait_condition.inc connection con1; ---echo # FTWRL should be able to continue now. ---echo # Reap FTWRL. ---reap unlock tables; connection default; |