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13076351f1
Let us remove the thread-local variable mariadb_stats and introduce trx_t::pages_accessed, trx_t::active_handler_stats for more efficiently maintaining some statistics inside InnoDB. buf_pool.stat.n_page_gets: Reimplemented as Atomic_counter<ulint>. This will no longer track some accesses in the background where !current_thd() || !thd_to_trx(current_thd). trx_t::free(), trx_t::commit_cleanup(): Apply pages_accessed to buf_pool.stat.n_page_gets. buf_read_ahead_report(): Report a completed read-ahead batch. ha_innobase::estimate_rows_upper_bound(): Do not bother updating trx_t::op_info around some quick arithmetics. ha_innobase::records_in_range(): Do invoke mariadb_set_stats. This will change some ANALYZE FORMAT=JSON SELECT results of the test main.rowid_filter_innodb. Reviewed by: Vladislav Lesin Tested by: Saahil Alam
131 lines
4 KiB
Text
131 lines
4 KiB
Text
create table t1(f1 int not null, f2 int not null, index idx(f2))engine=innodb;
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create table t2(f1 int primary key, f2 int, index idx(f2))engine=innodb;
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insert into t1 values(1, 2);
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insert into t2 values(1, 2);
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SET GLOBAL innodb_fast_shutdown = 0;
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# restart: --innodb-force-recovery=4
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select variable_name,variable_value from information_schema.global_status
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WHERE variable_name LIKE 'innodb_buffer_pool_%_requests';
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variable_name variable_value
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INNODB_BUFFER_POOL_READ_REQUESTS 0
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INNODB_BUFFER_POOL_WRITE_REQUESTS 0
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select * from t1;
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f1 f2
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1 2
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select variable_name from information_schema.global_status
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WHERE variable_name LIKE 'innodb_buffer_pool_%_requests' and variable_value>0;
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variable_name
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INNODB_BUFFER_POOL_READ_REQUESTS
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begin;
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insert into t1 values(2, 3);
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rollback;
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select variable_name from information_schema.global_status
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WHERE variable_name LIKE 'innodb_buffer_pool_%_requests' and variable_value>0;
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variable_name
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INNODB_BUFFER_POOL_READ_REQUESTS
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INNODB_BUFFER_POOL_WRITE_REQUESTS
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alter table t1 add f3 int not null, algorithm=copy;
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alter table t1 add f4 int not null, algorithm=inplace;
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drop index idx on t1;
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update t1 set f1=3 where f2=2;
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create table t3(f1 int not null)engine=innodb;
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drop table t3;
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rename table t1 to t3;
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rename table t3 to t1;
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truncate table t1;
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show tables;
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Tables_in_test
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t1
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t2
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# restart: --innodb-force-recovery=5
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select * from t2;
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f1 f2
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1 2
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insert into t2 values(2, 3);
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ERROR HY000: Running in read-only mode
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alter table t2 add f3 int not null, algorithm=copy;
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ERROR HY000: Can't create table `test`.`t2` (errno: 165 "Table is read only")
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alter table t2 add f3 int not null, algorithm=inplace;
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ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Running in read-only mode. Try ALGORITHM=COPY
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drop index idx on t2;
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ERROR HY000: Can't create table `test`.`t2` (errno: 165 "Table is read only")
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update t2 set f1=3 where f2=2;
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ERROR HY000: Running in read-only mode
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create table t3(f1 int not null)engine=innodb;
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ERROR HY000: Can't create table `test`.`t3` (errno: 165 "Table is read only")
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drop table t3;
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ERROR HY000: Table 't3' is read only
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rename table t2 to t3;
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ERROR HY000: Error on rename of './test/t2' to './test/t3' (errno: 165 "Table is read only")
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truncate table t2;
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ERROR HY000: Table 't2' is read only
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drop table t2;
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ERROR HY000: Table 't2' is read only
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create schema db;
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drop schema db;
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show tables;
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Tables_in_test
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t1
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t2
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# restart: --innodb-force-recovery=6
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select * from t2;
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f1 f2
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1 2
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insert into t2 values(2, 3);
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ERROR HY000: Table 't2' is read only
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alter table t2 add f3 int not null, algorithm=copy;
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ERROR HY000: Table 't2' is read only
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alter table t2 add f3 int not null, algorithm=inplace;
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ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Running in read-only mode. Try ALGORITHM=COPY
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drop index idx on t2;
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ERROR HY000: Table 't2' is read only
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update t2 set f1=3 where f2=2;
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ERROR HY000: Table 't2' is read only
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create table t3(f1 int not null)engine=innodb;
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ERROR HY000: Can't create table `test`.`t3` (errno: 165 "Table is read only")
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drop table t1;
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ERROR HY000: Table 't1' is read only
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rename table t2 to t3;
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ERROR HY000: Error on rename of './test/t2' to './test/t3' (errno: 165 "Table is read only")
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truncate table t2;
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ERROR HY000: Table 't2' is read only
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drop table t2;
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ERROR HY000: Table 't2' is read only
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show tables;
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Tables_in_test
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t1
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t2
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# restart: --innodb-force-recovery=2
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select * from t2;
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f1 f2
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1 2
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begin;
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update t2 set f2=3;
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connect con1,localhost,root,,;
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# Force a redo log flush of the above uncommitted UPDATE
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SET GLOBAL innodb_flush_log_at_trx_commit=1;
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drop table t1;
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disconnect con1;
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connection default;
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# Kill the server
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# restart: --innodb-force-recovery=3
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SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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select * from t2;
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f1 f2
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1 3
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SET TRANSACTION ISOLATION LEVEL REPEATABLE READ;
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select * from t2;
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f1 f2
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1 2
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SET SESSION innodb_lock_wait_timeout=1;
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insert into t2 values(1,2);
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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insert into t2 values(9,10);
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# restart
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select * from t2;
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f1 f2
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1 2
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9 10
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drop table t2;
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show tables;
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Tables_in_test
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