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9bc874a594
Let us introduce the parameter innodb_read_only_compressed that is ON by default, making any ROW_FORMAT=COMPRESSED tables read-only. I developed the ROW_FORMAT=COMPRESSED format based on Heikki Tuuri's rough design between 2005 and 2008. It might have been a good idea back then, but no proper benchmarks were ever run to validate the design or the implementation. The format has been more or less obsolete for years. It limits innodb_page_size to 16384 bytes (the default), and instant ALTER TABLE is not supported. This is the first step towards deprecating and removing write support for ROW_FORMAT=COMPRESSED tables.
597 lines
8.3 KiB
Text
597 lines
8.3 KiB
Text
create temporary table t1
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(keyc int, c1 char(100), c2 char(100),
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primary key(keyc), index sec_index(c1)
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) engine = innodb;
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create temporary table t2
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(keyc int, c1 char(100), c2 char(100),
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primary key(keyc), index sec_index(c1)
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) engine = innodb;
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create procedure populate_t1()
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begin
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declare i int default 1;
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while (i <= 200) do
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insert into t1 values (i, 'a', 'b');
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set i = i + 1;
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end while;
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end|
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create procedure populate_t1_small()
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begin
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declare i int default 1;
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while (i <= 20) do
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insert into t1 values (i, 'c', 'd');
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set i = i + 1;
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end while;
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end|
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create procedure populate_t1_small2()
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begin
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declare i int default 30;
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while (i <= 50) do
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insert into t1 values (i, 'e', 'f');
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set i = i + 1;
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end while;
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end|
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begin;
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select count(*) from t1;
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count(*)
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0
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call populate_t1();
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select count(*) from t1;
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count(*)
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200
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select * from t1 limit 10;
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keyc c1 c2
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1 a b
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2 a b
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3 a b
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4 a b
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5 a b
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6 a b
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7 a b
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8 a b
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9 a b
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10 a b
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rollback;
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select count(*) from t1;
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count(*)
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0
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begin;
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call populate_t1();
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select count(*) from t1;
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count(*)
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200
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commit;
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select count(*) from t1;
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count(*)
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200
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truncate table t1;
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select count(*) from t1;
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count(*)
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0
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call populate_t1_small();
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select count(*) from t1;
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count(*)
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20
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rollback;
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select count(*) from t1;
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count(*)
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20
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truncate table t1;
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call populate_t1();
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select count(*) from t1;
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count(*)
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200
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delete from t1 where keyc <= 60;
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select count(*) from t1;
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count(*)
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140
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call populate_t1_small();
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select count(*) from t1;
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count(*)
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160
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select * from t1 limit 10;
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keyc c1 c2
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1 c d
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2 c d
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3 c d
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4 c d
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5 c d
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6 c d
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7 c d
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8 c d
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9 c d
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10 c d
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begin;
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call populate_t1_small2();
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select count(*) from t1;
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count(*)
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181
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select * from t1 where keyc > 30 limit 10;
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keyc c1 c2
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31 e f
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32 e f
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33 e f
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34 e f
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35 e f
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36 e f
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37 e f
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38 e f
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39 e f
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40 e f
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rollback;
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select count(*) from t1;
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count(*)
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160
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select * from t1 where keyc > 30 limit 10;
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keyc c1 c2
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61 a b
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62 a b
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63 a b
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64 a b
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65 a b
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66 a b
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67 a b
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68 a b
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69 a b
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70 a b
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update t1 set keyc = keyc + 2000;
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select * from t1 limit 10;
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keyc c1 c2
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2001 c d
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2002 c d
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2003 c d
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2004 c d
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2005 c d
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2006 c d
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2007 c d
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2008 c d
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2009 c d
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2010 c d
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rollback;
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begin;
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update t1 set keyc = keyc + 2000;
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select * from t1 limit 10;
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keyc c1 c2
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4001 c d
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4002 c d
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4003 c d
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4004 c d
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4005 c d
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4006 c d
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4007 c d
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4008 c d
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4009 c d
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4010 c d
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rollback;
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select * from t1 limit 10;
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keyc c1 c2
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2001 c d
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2002 c d
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2003 c d
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2004 c d
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2005 c d
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2006 c d
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2007 c d
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2008 c d
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2009 c d
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2010 c d
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commit;
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select * from t1 limit 10;
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keyc c1 c2
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2001 c d
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2002 c d
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2003 c d
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2004 c d
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2005 c d
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2006 c d
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2007 c d
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2008 c d
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2009 c d
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2010 c d
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insert into t2 select * from t1 where keyc < 2101;
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select count(*) from t2;
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count(*)
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60
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drop procedure populate_t1;
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drop procedure populate_t1_small;
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drop procedure populate_t1_small2;
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drop temporary table t1,t2;
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create temporary table t1
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(keyc int, c1 char(100), c2 char(100),
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primary key(keyc), index sec_index(c1)
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) engine = innodb key_block_size = 4;
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ERROR HY000: InnoDB refuses to write tables with ROW_FORMAT=COMPRESSED or KEY_BLOCK_SIZE.
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create temporary table t1
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(keyc int, c1 char(100), c2 char(100),
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primary key(keyc), index sec_index(c1)
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) engine = innodb;
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set innodb_strict_mode=off;
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create temporary table t2
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(keyc int, c1 char(100), c2 char(100),
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primary key(keyc), index sec_index(c1)
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) engine = innodb key_block_size = 8;
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set innodb_strict_mode=on;
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create procedure populate_t1()
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begin
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declare i int default 1;
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while (i <= 200) do
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insert into t1 values (i, 'a', 'b');
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set i = i + 1;
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end while;
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end|
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create procedure populate_t1_small()
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begin
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declare i int default 1;
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while (i <= 20) do
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insert into t1 values (i, 'c', 'd');
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set i = i + 1;
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end while;
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end|
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create procedure populate_t1_small2()
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begin
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declare i int default 30;
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while (i <= 50) do
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insert into t1 values (i, 'e', 'f');
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set i = i + 1;
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end while;
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end|
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begin;
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select count(*) from t1;
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count(*)
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0
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call populate_t1();
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select count(*) from t1;
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count(*)
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200
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select * from t1 limit 10;
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keyc c1 c2
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1 a b
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2 a b
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3 a b
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4 a b
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5 a b
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6 a b
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7 a b
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8 a b
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9 a b
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10 a b
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rollback;
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select count(*) from t1;
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count(*)
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0
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begin;
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call populate_t1();
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select count(*) from t1;
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count(*)
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200
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commit;
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select count(*) from t1;
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count(*)
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200
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truncate table t1;
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select count(*) from t1;
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count(*)
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0
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call populate_t1_small();
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select count(*) from t1;
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count(*)
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20
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rollback;
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select count(*) from t1;
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count(*)
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20
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truncate table t1;
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call populate_t1();
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select count(*) from t1;
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count(*)
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200
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delete from t1 where keyc <= 60;
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select count(*) from t1;
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count(*)
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140
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call populate_t1_small();
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select count(*) from t1;
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count(*)
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160
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select * from t1 limit 10;
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keyc c1 c2
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1 c d
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2 c d
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3 c d
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4 c d
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5 c d
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6 c d
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7 c d
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8 c d
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9 c d
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10 c d
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begin;
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call populate_t1_small2();
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select count(*) from t1;
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count(*)
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181
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select * from t1 where keyc > 30 limit 10;
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keyc c1 c2
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31 e f
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32 e f
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33 e f
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34 e f
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35 e f
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36 e f
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37 e f
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38 e f
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39 e f
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40 e f
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rollback;
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select count(*) from t1;
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count(*)
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160
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select * from t1 where keyc > 30 limit 10;
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keyc c1 c2
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61 a b
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62 a b
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63 a b
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64 a b
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65 a b
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66 a b
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67 a b
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68 a b
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69 a b
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70 a b
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update t1 set keyc = keyc + 2000;
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select * from t1 limit 10;
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keyc c1 c2
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2001 c d
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2002 c d
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2003 c d
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2004 c d
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2005 c d
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2006 c d
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2007 c d
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2008 c d
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2009 c d
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2010 c d
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rollback;
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begin;
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update t1 set keyc = keyc + 2000;
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select * from t1 limit 10;
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keyc c1 c2
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4001 c d
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4002 c d
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4003 c d
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4004 c d
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4005 c d
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4006 c d
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4007 c d
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4008 c d
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4009 c d
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4010 c d
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rollback;
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select * from t1 limit 10;
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keyc c1 c2
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2001 c d
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2002 c d
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2003 c d
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2004 c d
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2005 c d
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2006 c d
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2007 c d
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2008 c d
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2009 c d
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2010 c d
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commit;
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select * from t1 limit 10;
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keyc c1 c2
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2001 c d
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2002 c d
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2003 c d
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2004 c d
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2005 c d
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2006 c d
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2007 c d
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2008 c d
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2009 c d
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2010 c d
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insert into t2 select * from t1 where keyc < 2101;
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select count(*) from t2;
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count(*)
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60
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drop procedure populate_t1;
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drop procedure populate_t1_small;
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drop procedure populate_t1_small2;
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drop temporary table t1, t2;
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create temporary table t1
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(keyc int, c1 char(100), c2 char(100),
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primary key(keyc), index sec_index(c1)
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) engine = innodb;
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create temporary table t2
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(keyc int, c1 char(100), c2 char(100),
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primary key(keyc), index sec_index(c1)
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) engine = innodb;
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create procedure populate_t1()
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begin
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declare i int default 1;
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while (i <= 200) do
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insert into t1 values (i, 'a', 'b');
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set i = i + 1;
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end while;
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end|
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create procedure populate_t1_small()
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begin
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declare i int default 1;
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while (i <= 20) do
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insert into t1 values (i, 'c', 'd');
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set i = i + 1;
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end while;
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end|
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create procedure populate_t1_small2()
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begin
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declare i int default 30;
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while (i <= 50) do
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insert into t1 values (i, 'e', 'f');
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set i = i + 1;
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end while;
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end|
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begin;
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select count(*) from t1;
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count(*)
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0
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call populate_t1();
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select count(*) from t1;
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count(*)
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200
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select * from t1 limit 10;
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keyc c1 c2
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1 a b
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2 a b
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3 a b
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4 a b
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5 a b
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6 a b
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7 a b
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8 a b
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9 a b
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10 a b
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rollback;
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select count(*) from t1;
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count(*)
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0
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begin;
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call populate_t1();
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select count(*) from t1;
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count(*)
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200
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commit;
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select count(*) from t1;
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count(*)
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200
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truncate table t1;
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select count(*) from t1;
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count(*)
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0
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call populate_t1_small();
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select count(*) from t1;
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count(*)
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20
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rollback;
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select count(*) from t1;
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count(*)
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20
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truncate table t1;
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call populate_t1();
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select count(*) from t1;
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count(*)
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200
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delete from t1 where keyc <= 60;
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select count(*) from t1;
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count(*)
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140
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call populate_t1_small();
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select count(*) from t1;
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count(*)
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160
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select * from t1 limit 10;
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keyc c1 c2
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1 c d
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2 c d
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3 c d
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4 c d
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5 c d
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6 c d
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7 c d
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8 c d
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9 c d
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10 c d
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begin;
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call populate_t1_small2();
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select count(*) from t1;
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count(*)
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181
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select * from t1 where keyc > 30 limit 10;
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keyc c1 c2
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31 e f
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32 e f
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33 e f
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34 e f
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35 e f
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36 e f
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37 e f
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38 e f
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39 e f
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40 e f
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rollback;
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select count(*) from t1;
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count(*)
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160
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select * from t1 where keyc > 30 limit 10;
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keyc c1 c2
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61 a b
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62 a b
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63 a b
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64 a b
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65 a b
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66 a b
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67 a b
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68 a b
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69 a b
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70 a b
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update t1 set keyc = keyc + 2000;
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select * from t1 limit 10;
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keyc c1 c2
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2001 c d
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2002 c d
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2003 c d
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2004 c d
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2005 c d
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2006 c d
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2007 c d
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2008 c d
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2009 c d
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2010 c d
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rollback;
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begin;
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update t1 set keyc = keyc + 2000;
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select * from t1 limit 10;
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keyc c1 c2
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4001 c d
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4002 c d
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4003 c d
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4004 c d
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4005 c d
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4006 c d
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4007 c d
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4008 c d
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4009 c d
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4010 c d
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rollback;
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select * from t1 limit 10;
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keyc c1 c2
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2001 c d
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2002 c d
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2003 c d
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2004 c d
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2005 c d
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2006 c d
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2007 c d
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2008 c d
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2009 c d
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2010 c d
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commit;
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select * from t1 limit 10;
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keyc c1 c2
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2001 c d
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2002 c d
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2003 c d
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2004 c d
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2005 c d
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2006 c d
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2007 c d
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2008 c d
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2009 c d
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2010 c d
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insert into t2 select * from t1 where keyc < 2101;
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select count(*) from t2;
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count(*)
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60
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drop procedure populate_t1;
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drop procedure populate_t1_small;
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drop procedure populate_t1_small2;
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