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MDEV-33145 Add FLUSH GLOBAL STATUS

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- FLUSH GLOBAL STATUS now resets most global_status_vars.
  At this stage, this is mainly to be used for testing.
- FLUSH SESSION STATUS added as an alias for FLUSH STATUS.
- FLUSH STATUS does not require any privilege (before required RELOAD).
- FLUSH GLOBAL STATUS requires RELOAD privilege.
- All global status reset moved to FLUSH GLOBAL STATUS.
- Replication semisync status variables are now reset by
  FLUSH GLOBAL STATUS.
- In test cases, the only changes are:
  - Replace FLUSH STATUS with FLUSH GLOBAL STATUS
  - Replace FLUSH STATUS with FLUSH STATUS; FLUSH GLOBAL STATUS.
    This was only done in a few tests where the test was using SHOW STATUS
    for both local and global variables.
- Uptime_since_flush_status is now always provided, independent if
  ENABLED_PROFILING is enabled when compiling MariaDB.
- @@global.Uptime_since_flush_status is reset on FLUSH GLOBAL STATUS
  and @@session.Uptime_since_flush_status is reset on FLUSH SESSION STATUS.
- When connected, @@session.Uptime_since_flush_status is set to 0.
This commit is contained in:
Monty
2023-12-31 16:23:04 +02:00
committed by Sergei Golubchik
parent d2b39a2c82
commit 775cba4d0f
325 changed files with 787 additions and 525 deletions
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6
mysql-test/main/partition_cache_innodb.result
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@ -28,7 +28,7 @@ t1 CREATE TABLE `t1` (
PARTITION `month_2010_5` VALUES LESS THAN (734289) ENGINE = InnoDB,
PARTITION `month_max` VALUES LESS THAN MAXVALUE ENGINE = InnoDB)
INSERT INTO t1 VALUES (1, now(), 0);
flush status;
flush global status;
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
@ -79,7 +79,7 @@ SUBPARTITIONS 3
PARTITION `month_2010_5` VALUES LESS THAN (734289) ENGINE = InnoDB,
PARTITION `month_max` VALUES LESS THAN MAXVALUE ENGINE = InnoDB)
INSERT INTO t1 VALUES (1, now(), 0);
flush status;
flush global status;
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
@ -107,7 +107,7 @@ drop table t1;
# from previous transaction
#
flush query cache;
flush status;
flush global status;
SET GLOBAL query_cache_size=1024*1024*512;
CREATE TABLE `t1` (
`id` int(11) NOT NULL ,