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* Preparation for having a background checkpoint thread: frequency of checkpoint taken by that thread is now configurable by the user: global variable maria_checkpoint_frequency, in seconds, default 30 (checkpoint every 30th second); 0 means no checkpoints (and thus no background thread, thus no background flushing, that will probably only be used for testing). * Don't take checkpoints in Recovery if it didn't do anything significant; thus no checkpoint after a clean shutdown/restart. The only checkpoint which is never skipped is the one at shutdown. * fix for a test failure (after-merge fix) include/maria.h: new variable mysql-test/suite/rpl/r/rpl_row_flsh_tbls.result: result update mysql-test/suite/rpl/t/rpl_row_flsh_tbls.test: position update (=after merge fix, as this position was already changed into 5.1 and not merged here, causing test to fail) storage/maria/ha_maria.cc: Checkpoint's frequency is now configurable by the user: global variable maria_checkpoint_frequency. Changing it on the fly requires us to shutdown/restart the background checkpoint thread, as the loop done in that thread assumes a constant checkpoint interval. Default value is 30: a checkpoint every 30 seconds (yes, I know, physicists will remind that it should be named "period" then). ha_maria now asks for a background checkpoint thread when it starts, but this is still overruled (disabled) in ma_checkpoint_init(). storage/maria/ma_checkpoint.c: Checkpoint's frequency is now configurable by the user: background thread takes a checkpoint every maria_checkpoint_interval-th second. If that variable is 0, no checkpoints are taken. Note, I will enable the background thread only in a later changeset. storage/maria/ma_recovery.c: Don't take checkpoints at the end of the REDO phase and at the end of Recovery if Recovery didn't make anything significant (didn't open any tables, didn't rollback any transactions). With this, after a clean shutdown, Recovery shouldn't take any checkpoint, which makes starting faster (we save a few fsync()s of the log and control file).
33 lines
1 KiB
Text
33 lines
1 KiB
Text
stop slave;
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drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
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reset master;
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reset slave;
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drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
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start slave;
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create table t1 (a int) ENGINE=MyISAM;
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insert into t1 values (10);
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create table t2 (a int) ENGINE=MyISAM;
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create table t3 (a int) engine=merge union(t1);
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create table t4 (a int);
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insert into t4 select * from t3;
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rename table t1 to t5, t2 to t1;
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flush no_write_to_binlog tables;
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SHOW BINLOG EVENTS FROM 651 ;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Query 1 # use `test`; rename table t1 to t5, t2 to t1
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select * from t3;
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a
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flush tables;
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SHOW BINLOG EVENTS FROM 651 ;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Query 1 # use `test`; rename table t1 to t5, t2 to t1
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master-bin.000001 # Query 1 # use `test`; flush tables
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select * from t3;
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a
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stop slave;
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drop table t1;
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flush tables with read lock;
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start slave;
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stop slave;
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ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
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drop table t3, t4, t5;
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