133 lines
5.9 KiB
Plaintext
133 lines
5.9 KiB
Plaintext
call mtr.add_suppression(".*NDB_SHARE.*Moving away for safety, but possible memleak");
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create table parent(a int primary key, b int, key(b)) engine=ndb
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comment="NDB_TABLE=PARTITION_BALANCE=FOR_RP_BY_LDM";
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create table child(a int, b int, primary key(a,b), key(b)) engine=ndb
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comment="NDB_TABLE=PARTITION_BALANCE=FOR_RP_BY_LDM";
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insert into parent values (1,1), (2,2), (3,3), (4,4);
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insert into parent select a+4, b+4 from parent;
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insert into parent select a+8, b+8 from parent;
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insert into parent select a+16, b+16 from parent;
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insert into parent select a+32, b+32 from parent;
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insert into parent select a+64, b+64 from parent;
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insert into parent select a+128, b+128 from parent;
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insert into parent select a+256, b+256 from parent;
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insert into parent select a+512, b+512 from parent;
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insert into parent select a+1024, b+1024 from parent;
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insert into parent select a+2048, b+2048 from parent;
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insert into parent select a+4096, b+4096 from parent;
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insert into child select * from parent;
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analyze table parent, child;
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Table Op Msg_type Msg_text
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test.parent analyze status OK
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test.child analyze status OK
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set ndb_join_pushdown = off;
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explain
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select straight_join count(*)
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from parent join child
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on child.a = parent.a and child.b = parent.b
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where parent.b > 5;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE parent p0,p1,p2,p3,p4,p5,p6,p7 range PRIMARY,b b 5 NULL ### ### Using pushed condition ((`test`.`parent`.`b` > 5) and (`test`.`parent`.`b` is not null)); Using MRR
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1 SIMPLE child p0,p1,p2,p3,p4,p5,p6,p7 eq_ref PRIMARY,b PRIMARY 8 test.parent.a,test.parent.b ### ### NULL
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Warnings:
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Note 1003 /* select#1 */ select straight_join count(0) AS `count(*)` from `test`.`parent` join `test`.`child` where ((`test`.`child`.`b` = `test`.`parent`.`b`) and (`test`.`child`.`a` = `test`.`parent`.`a`) and (`test`.`parent`.`b` > 5))
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explain
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select straight_join count(*)
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from parent join child
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on child.a = parent.a
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where parent.b > 5;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE parent p0,p1,p2,p3,p4,p5,p6,p7 range PRIMARY,b b 5 NULL ### ### Using pushed condition (`test`.`parent`.`b` > 5); Using MRR
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1 SIMPLE child p0,p1,p2,p3,p4,p5,p6,p7 ref PRIMARY PRIMARY 4 test.parent.a ### ### NULL
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Warnings:
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Note 1003 /* select#1 */ select straight_join count(0) AS `count(*)` from `test`.`parent` join `test`.`child` where ((`test`.`child`.`a` = `test`.`parent`.`a`) and (`test`.`parent`.`b` > 5))
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explain
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select straight_join count(*)
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from parent join child
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on child.b = parent.b
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where parent.b > 5;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE parent p0,p1,p2,p3,p4,p5,p6,p7 range b b 5 NULL ### ### Using pushed condition ((`test`.`parent`.`b` > 5) and (`test`.`parent`.`b` is not null)); Using MRR
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1 SIMPLE child p0,p1,p2,p3,p4,p5,p6,p7 ref b b 4 test.parent.b ### ### NULL
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Warnings:
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Note 1003 /* select#1 */ select straight_join count(0) AS `count(*)` from `test`.`parent` join `test`.`child` where ((`test`.`child`.`b` = `test`.`parent`.`b`) and (`test`.`parent`.`b` > 5))
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show variables like 'server_id';
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Variable_name Value
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server_id 1
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create procedure query_eq_ref_load (seconds int)
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begin
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set @x=time_to_sec(current_time()) + seconds;
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repeat
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set ndb_join_pushdown = off;
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select straight_join count(*)
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from parent join child
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on child.a = parent.a and child.b = parent.b
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where parent.b > 5;
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until @x <= time_to_sec(current_time())
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end repeat;
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end%
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create procedure query_ref_load (seconds int)
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begin
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set @x=time_to_sec(current_time()) + seconds;
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repeat
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set ndb_join_pushdown = off;
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select straight_join count(*)
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from parent join child
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on child.a = parent.a and child.b = parent.b
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where parent.b > 5;
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until @x <= time_to_sec(current_time())
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end repeat;
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end%
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create procedure query_ref_b_load (seconds int)
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begin
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set @x=time_to_sec(current_time()) + seconds;
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repeat
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set ndb_join_pushdown = off;
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select straight_join count(*)
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from parent join child
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on child.a = parent.a and child.b = parent.b
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where parent.b > 5;
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until @x <= time_to_sec(current_time())
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end repeat;
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end%
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Starting background DML load
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call query_eq_ref_load(10);
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call query_ref_load(10);
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call query_ref_b_load(10);
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show variables like 'server_id';
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Variable_name Value
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server_id 2
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Starting concurrent DDL operations
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alter table child add column c int;
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Warnings:
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Warning 1478 Converted FIXED field 'c' to DYNAMIC to enable online ADD COLUMN
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alter table child drop column c;
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alter table child drop primary key;
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alter table child add primary key(b);
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alter table child drop primary key;
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alter table child add primary key(a,b) using hash;
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alter table child drop primary key;
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alter table child add primary key(a,b);
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Completed DDL operations, rejoins with DML load.
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====================================================
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Force a 'trailing share' to be created in order to
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check correct cleanup in ndbcluster_real_free_share()
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=====================================================
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set ndb_join_pushdown = off;
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explain select straight_join *
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from parent join child
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on child.a = parent.a and child.b = parent.b
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where parent.b > 5;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE parent p0,p1,p2,p3,p4,p5,p6,p7 range PRIMARY,b b 5 NULL ### ### Using pushed condition ((`test`.`parent`.`b` > 5) and (`test`.`parent`.`b` is not null)); Using MRR
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1 SIMPLE child p0,p1,p2,p3,p4,p5,p6,p7 eq_ref PRIMARY,b PRIMARY 8 test.parent.a,test.parent.b ### ### NULL
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Warnings:
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Note 1003 /* select#1 */ select straight_join `test`.`parent`.`a` AS `a`,`test`.`parent`.`b` AS `b`,`test`.`child`.`a` AS `a`,`test`.`child`.`b` AS `b` from `test`.`parent` join `test`.`child` where ((`test`.`child`.`b` = `test`.`parent`.`b`) and (`test`.`child`.`a` = `test`.`parent`.`a`) and (`test`.`parent`.`b` > 5))
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alter table child algorithm=copy, drop primary key;
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commit;
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drop table child;
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drop table parent;
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drop procedure query_eq_ref_load;
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drop procedure query_ref_load;
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drop procedure query_ref_b_load;
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