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MDEV-32250 Enable --no-autocommit by default in mysqldump

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- mariadb-dump utility performs logical backups by producing
set of sql statements that can be executed. By enabling this
no-autocommit option, InnoDB can load the data in an efficient
way and writes the only one undo log for the whole operation.
Only first insert statement undergoes bulk insert operation,
remaining insert statement doesn't write undo log and undergoes
normal insert code path.
This commit is contained in:
Thirunarayanan Balathandayuthapani
2024-12-03 17:51:35 +05:30
parent f0961301c8
commit b24ecd7ca6
21 changed files with 238 additions and 68 deletions
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10
mysql-test/suite/sql_sequence/mysqldump.test
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@ -12,15 +12,15 @@ CREATE TABLE t1(a INT, KEY (a)) KEY_BLOCK_SIZE=1024;
insert into t1 values (1),(2);
CREATE SEQUENCE x1 engine=innodb;
--echo # dump whole database
--exec $MYSQL_DUMP --compact test
--exec $MYSQL_DUMP --no-autocommit=0 --compact test
--echo # dump by tables order 1
--exec $MYSQL_DUMP --compact --tables test t1 a1 x1
--exec $MYSQL_DUMP --no-autocommit=0 --compact --tables test t1 a1 x1
--echo # dump by tables order 2
--exec $MYSQL_DUMP --compact --tables test a1 t1 x1
--exec $MYSQL_DUMP --no-autocommit=0 --compact --tables test a1 t1 x1
--echo # dump by tables only tables
--exec $MYSQL_DUMP --compact --tables test t1
--exec $MYSQL_DUMP --no-autocommit=0 --compact --tables test t1
--echo # dump by tables only sequences
--exec $MYSQL_DUMP --compact --tables test a1 x1
--exec $MYSQL_DUMP --no-autocommit=0 --compact --tables test a1 x1
--echo # end of dumps
DROP TABLE a1,t1,x1;