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In MariaDB, we have a confusing problem where: * The transaction_isolation option can be set in a configuration file, but it cannot be set dynamically. * The tx_isolation system variable can be set dynamically, but it cannot be set in a configuration file. Therefore, we have two different names for the same thing in different contexts. This is needlessly confusing, and it complicates the documentation. The same thing applys for transaction_read_only. MySQL 5.7 solved this problem by making them into system variables. https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-20.html This commit takes a similar approach by adding new system variables and marking the original ones as deprecated. This commit also resolves some legacy problems related to SET STATEMENT and transaction_isolation.
44 lines
985 B
Text
44 lines
985 B
Text
# test for BUG#41029:
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# "MRR: SELECT FOR UPDATE fails to lock gaps (InnoDB table)"
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--source include/have_debug.inc
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--source include/have_innodb.inc
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select @default_binlog_format:=@@global.binlog_format;
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set global binlog_format=row;
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connect (con1,localhost,root,,);
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connect (con2,localhost,root,,);
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connection con1;
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# bug requires this
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set session debug_dbug="+d,optimizer_innodb_ds_mrr";
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set autocommit=0;
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use test;
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drop table if exists t1;
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create table t1 (dummy int primary key, a int unique, b int) engine=innodb;
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insert into t1 values(1,1,1),(3,3,3),(5,5,5);
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commit;
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set session transaction isolation level repeatable read;
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select @@transaction_isolation;
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start transaction;
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select * from t1 where a > 2 for update;
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connection con2;
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use test;
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set autocommit=0;
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start transaction;
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select 1;
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--error ER_LOCK_WAIT_TIMEOUT
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insert into t1 values(2,2,2);
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rollback;
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connection con1;
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rollback;
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drop table t1;
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connection default;
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set global binlog_format=@default_binlog_format;
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